Simplified Wiring System (Sws) - Except Evolution: Other Mitsubishi Lancer IX

COMMUNICATION METHOD

As shown below, signal wires used exclusively for transmitting multiplex signal data connect the ETACS-ECU, front-ECU, column switch (incorporating the column-ECU) and sunroof motor assembly (incorporating the sunroof-ECU) and these components communicate with each other. (Scheme 86)

Scheme 86

FLASHER TIMER

The ECU related to the alarm function types and various control functions are as follows (Scheme 87)and (Scheme 88).

Scheme 87

Scheme 88

HEADLIGHT AND TAILLIGHT

The ECU related to the headlight and taillight types and various control functions are as follows. (Scheme 89)

Scheme 89

Scheme 90

Scheme 91

Scheme 92

INTERIOR LIGHT

The ECU related to the interior light function types and various control functions are as follows (Scheme 93)

Scheme 93

Scheme 94

KEYLESS ENTRY SYSTEM

The following ECU's affect the functions and control of the keyless entry system. (Scheme 95)

Scheme 95

REAR WIPER & WASHER

The following ECU's affect the functions and control of the rear wiper and washer. (Scheme 96)

Scheme 96

Scheme 97

SEAT BELT WARNING LIGHT

The following ECU affects the functions of the seat belt warning light. (Scheme 98)

Scheme 98

Scheme 99

SUNROOF

The following ECU's affect the functions and control of the sunroof. (Scheme 100)

Scheme 100

TONE ALARM

The ECU related to the alarm function types and various control functions. (Scheme 101)

Scheme 101

Ignition Key Reminder Tone Alarm Function

When the driver's door is opened with the ignition key inserted in the ignition key cylinder (ignition switch is in the OFF position), the tone alarm sounds intermittently (horn sound) to indicate that the ignition key has not been removed. (Scheme 102)

Scheme 102

Light Reminder Tone Alarm Function

When the taillight or headlight is ON, if the ignition key is removed and the driver's door is opened, a tone alarm will sound continuously to warn that the light is illuminated. However, if the taillight or headlight has been turned off by the headlight automatic-shutdown function, the tone alarm will not sound. (Scheme 103)

Scheme 103

Seat Belt Tone Alarm Function

When the ignition switch is turned to ON position without fastening the driver's seat belt (driver's seat belt switch off), the tone alarm will sound for approximately 6 seconds to warn the driver to fasten the seat belt. When the driver's seat belt is fastened or ignition switch is turned to OFF position, the tone alarm will stop sounding. (Scheme 104)

Scheme 104

Scheme 105

Scheme 106

Scheme 107

WINDSHIELD WIPER & WASHER

The following ECU's affect the functions and control of the windshield wiper and washer. (Scheme 108)

Scheme 108

Scheme 109

CENTRAL DOOR LOCKING SYSTEM

1. When the driver's inside lock knob is locked or unlocked, the lock relay inside the ETACS-ECU turns on to lock or unlock all doors.
2. With all the doors locked, turning the key in the driver's door unlocks the door. Turning it again makes the door unlock relay close to send a signal for unlocking all doors.
3. When the door lock switch (built into the power window switch) is operated, the lock or unlock relay inside the ETACS-ECU is turned on to lock or unlock all doors.

The following ECU's affect the functions and control of the central door locking system. (Scheme 110)

Scheme 110

Operating The Driver's Or Front Passenger's Door Lock Key Cylinder

When you insert the ignition key to the driver's or front passenger's door lock key cylinder and turn the key clockwise to lock the door, the ETACS-ECU energizes its door lock relay for 0.25 second to activate all the door lock actuators. Then all the doors will be locked. (Scheme 111)

Scheme 111

Operating The Driver's Or Front Passenger's Door Lock Switch

When the door is locked by driver's or front passenger's door lock switch, the ETACS-ECU energizes its door lock relay for 0.25 second to activate all the door lock actuators. Then all the doors will be locked. (Scheme 112)

Scheme 112

Operating The Driver's Door Inside Lock Knob

When the door is locked by driver's door inside lock knob, the ETACS-ECU energizes its door lock relay for 0.25 second to activate all the door lock actuators. Then all the doors will be locked. (Scheme 113)

Scheme 113

Operating The Driver's Door Lock Key Cylinder

When you insert the ignition key to the driver's door lock key cylinder and turn the key counterclockwise to unlock the door, the ETACS-ECU energizes its door unlock relay for 0.25 second to activate only the driver's door lock actuator. Then only the driver's door will be unlocked. When you turn the key counterclockwise again, the ETACS-ECU energizes its door unlock relay for 0.25 second to activate all the door lock actuator. Then all the doors will be unlocked. (Scheme 114)

Scheme 114

Operating The Front Passenger's Door Lock Key Cylinder

When you insert the ignition key to the front passenger's door lock key cylinder and turn the key counterclockwise to unlock the door, the ETACS-ECU energizes its door unlock relay for 0.25 second to activate all the door lock actuators. Then all the doors will be unlocked. (Scheme 115)

Scheme 115

When the door is unlocked by driver's or front passenger's door lock switch, the ETACS-ECU energizes its door unlock relay for 0.25 second to activate all the door lock actuators. Then all the doors will be unlocked. (Scheme 116)

Scheme 116

Turn Signal Light

The turn signal light output (flashing signal) is turned ON when the turn signal light ignition switch is ON and the turn signal light switch is ON (LH or RH.) If the front turn signal light or rear turn signal light bulb has burned out, the flashing speed increases to indicate that the bulb has burned out. (Scheme 117)

Scheme 117

Hazard Light

Note. The hazard light switch is a push-return type toggle switch.

The hazard lights output (flashing) is turned ON when the hazard switch is turned OFF to ON. When the switch is turned ON again, the output is turned OFF. (Scheme 118)

Scheme 118

Daytime Running Light Function

The daytime running light-ECU constantly lights up the high beam in a reduced beam state if the ignition switch is in the ON position when the headlight switch is in the "OFF" or "TAIL" position. If the headlights illuminate while the daytime running light function operates, the daytime running light-ECU shut the high-beam down. (Scheme 119)

Scheme 119

Headlight Automatic-Shutdown Function

Note. This function can be disabled by the configuration function.

Even if the lighting switch (taillight switch or headlight switch) is ON, the head light (including the taillights) will automatically go off in the following conditions to prevent the battery from discharging as a result of forgetting to turn off lights. When the ignition key is turned from ON to LOCK (OFF) or ACC position with the lighting switch turned ON, and this state continues for 3 minutes, the light will automatically be turned off. If the driver's seat door is opened during these 3 minutes, the light will go off one second later. (Scheme 120)

Scheme 120

Headlights & High-Beam Indicator Light

Note. This item only considers the headlight light up function and doesn't take into consideration the other functions. In actual driving, the headlights may be turned off due to the headlight automatic shut-down function.

The front ECU lights up the headlight (LOW) when the signal from the column switch to the headlight switch is in the " ON state and the built-in head light relay (LOW) is in the ON state. If the dimmer switch is turned on while the headlight relay (LOW) is on, the front-ECU turns on the headlight relay (HIGH), causing the high-beam headlights to illuminate. What's more, ETACS-ECU lights up the high beam indicator light when the acknowledgment signal from the front ECU is in the "HI-BEAM ACK" state or the head light switch signal from the column switch is in the "PASS" state. (Scheme 121)

Scheme 121

Taillight

Note. This item only considers the taillight light up function and does not take into consideration the other functions. In actual driving, the taillights may be turned off due to the headlight automatic shut-down function.

The front ECU will light up the taillight when the tail light switch signal from the column switch is in the ON state and the built-in taillight replay is in the ON state.

Dome Light Function

When the dome light switch is at the door position, the ETACS-ECU controls the lighting of the dome light as follows

1. When a door is opened to get on or get off the vehicle with the ignition switch off, the dome light lights up at a luminance of 100 percent. When a door is closed, the dome light dims at a luminance of 65 percent, and goes off 30 seconds later. However if the ignition switch is turned ON or if all doors are locked while they are closed, the dome light will go off at that point. (Scheme 122)
2. When a door is opened with the ignition switch ON, the dome light lights up at a luminance of 100 percent. When a door is closed, the dome light goes off.
3. When the ignition key is removed with all doors closed, the dome light lights up at a luminance of 100 percent, and goes off 30 seconds later. However if the ignition key is inserted again or if all doors are locked while the dome light is lighting, the dome light will go off at that point.
4. The dome light is flashed twice when door is locked with keyless entry. When door is unlocked with keyless entry, the dome light lights at a luminance of 100 percent, and goes off 15 seconds later.

Scheme 122

Interior Light Automatic-Shutdown Function

Illuminated interior lights such as the front dome light, etc. (all lights using the dome light fuse as the power supply) will automatically go off in the following conditions to prevent excess battery discharge as a result of forgetting to turn off the lights or incomplete closing of the door. (Scheme 123)

1. When the ignition switch is turned off and more than 30 minutes pass by with the interior light illuminated, the interior lights will go off automatically.
2. When the ignition switch is turned off and any door switch remains open for 30 minutes continuously, the interior lights will go off automatically.

Scheme 123

Operating The Transmitter Lock Switch

When the transmitter lock switch is pressed, the ETACS-ECU energizes its door lock relay to operate all the door lock actuators for 0.25 second thus causing all doors to be locked. (Scheme 124)

Scheme 124

Operating The Transmitter Unlock Switch Press Once

When the transmitter unlock switch is pressed once, the ETACS-ECU energizes its door unlock relay to operate the door lock actuator of the driver's door for 0.25 seconds thus causing only the driver's door to be unlocked. (Scheme 125)

Scheme 125

Operating The Transmitter Unlock Switch Press Twice

When the transmitter unlock switch is pressed twice, the ETACS-ECU energizes its door unlock relay to operate the driver's door lock actuator and the other door lock actuators for 0.25 seconds each in succession. Then, the doors will be unlocked. (Scheme 126)

Scheme 126

Keyless Entry Hazard Answerback & Horn Answerback Function

Note. Hazard answerback function can be disabled by the configuration function. See ADJUSTMENT PROCEDURES OF SWS FUNCTION (VEHICLES WITH KEYLESS ENTRY SYSTEM) .

The hazard answerback and horn answerback function which facilities checking of lock or unlock operations even during daytime is provided. When the lock signal is input from the keyless entry transmitter to the ETACS-ECU, the hazard light flashes twice and horn sounds once. When the unlock signal is input, hazard light flashes once.

Rear Wiper Control

If the rear wiper switch of the column switch assembly is turned ON with the ignition switch in the ACC or ON position, the ETACS-ECU will turn the rear wiper drive signal ON for 3 seconds (approximately 2 operations), and then will carry out intermittent operation in a 7.4 to 8 seconds cycle. If the selector lever is moved to the "R" position when the rear wiper switch of the column switch assembly is turned ON and the ignition switch is in any position other than OFF, the Park/Neutral position switch "R" position switch turns ON. One second later, the ETACS-ECU turns the rear wiper drive signal ON for 3 seconds (approximately 2 operations), to clear the rear view, and then returns to intermittent operation at a 7.4 to 8 seconds cycle. (Scheme 127)

Scheme 127

Rear Washer Control

When the ignition switch is at the ACC or ON position, if the rear washer switch of the column switch is turned ON, the ETACS-ECU turns ON the rear washer relay. The rear wiper drive signal is turned ON in 0.3 seconds until 3 seconds after the rear washer switch goes OFF to operate the rear wiper continuously. If the rear wiper is in intermittent operation when the rear washer switch is turned ON, 7.4 seconds after the rear wiper drive signal turns OFF, the 8 seconds cycle intermittent operation will continue. (Scheme 128)

Scheme 128

SEAT BELT WARNING LIGHT FUNCTION

The seat belt warning light lights up and makes seat belt buckling easier when the ignition switch is ON and the driver's seat belt switch is ON (seat belt is not fastened).

Sunroof Timer Function

After the ignition switch is turned OFF, the system continues to turn ON the sunroof relay for about 30 seconds and to enable the opening and closing of the sunroof by the sunroof switch. When the driver's or front passenger's door is opened while the timer is in operation, the sunroof relay will be turned OFF and the sunroof timer function will be finished. (Scheme 129)

Scheme 129

When the driver's door is opened (driver's door switch ON) without removing the ignition key ignition switch to the "LOCK" (OFF) or "ACC" position, the tone alarm will sound intermittently to remind the driver that the ignition key has not been removed.

When the driver's door is opened (driver's door switch ON) with lighting switch (taillight switch or headlight switch) in the ON position and ignition switch in the "LOCK" (OFF) or "ACC" position, the tone alarm will sound continuously to remind the driver that the lights (taillights or headlights) are ON. This function does not work if the taillights or headlights are switched off through the headlight automatic shutdown function. In addition, the ignition key reminder tone alarm function has a priority over this function.

When the ignition switch is turned to the "ON" position without fastening the seat belts (seat belt switch OFF), the tone alarm will sound for approximately 6 seconds to warn the driver to fasten the seat belts. When the seat belts are fastened, the tone alarm will stop sounding.

POWER WINDOWS

The following ECU's affect the functions and control of the power windows. (Scheme 130)

Scheme 130

Raises The Driver's Power Window

When the driver's power window switch on the power window main switch is pulled up, the system energizes its respective power window motor, and then driver's window glass rises. (Scheme 131)

Scheme 131

Lower The Driver's Power Window

When the driver's power window switch on the power window main switch is pushed down, the system energizes its respective power window motor, and then driver's window glass lowers. (Scheme 132)

Scheme 132

Lowers The Driver's Power Window By One-Shot Function

When the driver's power window switch on the power window main switch is pushed down fully, the system energizes its respective power window motor, and then driver's window glass moves to its lowest position. (Scheme 133)

Scheme 133

Raises The Passenger's Power Window

When the passenger's power window switch on the power window main switch is pulled up, the system energizes its respective power window motor, and then passenger's window glass rises. (Scheme 134)

Scheme 134

Lowers The Passenger's Power Window

When the passenger's power window switch on the power window main switch is pushed down, the system energizes its respective power window motor, and then passenger's window glass lowers. (Scheme 135)

Scheme 135

When the power window sub switch is pulled up, the system energizes its respective power window motor, and then passenger's window glass rises. (Scheme 136)

Scheme 136

When the power window sub switch is pushed down, the system energizes its respective power window motor, and then passenger's window glass lowers. (Scheme 137)

Scheme 137

Power Window Timer Function

When the ignition switch is turned to the "ON" position, the power window relay is turned ON. After the ignition switch is turned OFF, the system continues to turn ON the power window relay for about 30 seconds and to enable the opening and closing of the door window by the power window switch. When the driver's or front passenger's door is opened while the timer is in operation, the power window relay will be turned OFF. (Scheme 138)

Scheme 138

POWER WINDOW RELAY CONTROL

If the ignition switch is turned to "ON" position, the power window relay is energized to activate the power windows.

When the ignition switch is turned from the "ON" position to "LOCK" (OFF) or "ACC" position, the power windows can be operated for 30 seconds. If any door is opened for the 30 seconds, the power windows will be immobilized at that point.

If the RKE transmitter "LOCK" or "UNLOCK" switch is pressed while the ignition key is removed, the doors can be locked or unlocked. If the doors are closed, the hazard warning lights, the dome light and the horn will operate due to answerback function. Because of the answerback function, the hazard warning lights flash twice, and the horn sounds once, the dome light flashes twice when the doors are locked. Meanwhile, when the doors are unlocked, the hazard warning lights flash and the dome light illuminates for 15 seconds. The hazard and the horn answerback functions can be cancelled by using the RKE transmitter.

1. All of the slide open/close, tilt up/down, and stop operations can be performed by a single switch.
2. When the roof lid glass is tilted up, the sunshade opens approximately 98 mm (3.9 inches) in combined operation with the roof lid glass for better ventilation.
3. A jam preventing mechanism has been adopted. When a slide-close or tilt-down operation is blocked by an external force, the roof lid glass moves back and stops.
4. The electronic sunroof system cannot be operated manually. The sunroof wrench that was used in previous models is not provided. If the anti-jam mechanism reverses the sunroof 5 or more times consecutively due to deformation or other problem with the sunroof components, it deactivates and allows the sunroof to make small movements 30 mm (1.2 inches) until it closes completely.

When the ignition switch is turned from "ON" position to "LOCK" (OFF) or "ACC" position, the sunroof can be operated for 30 seconds. If any door is opened for the 30 seconds, the sunroof will be immobilized at that point.

If the driver turns the ignition switch to the "ON" position without wearing the seat belt, the seat belt warning light illuminates to alert the driver to wear the seat belt.

Note. The headlight automatic shutdown function can be disabled by the SWS configuration function. See ADJUSTMENT PROCEDURES OF SWS FUNCTION (VEHICLES WITH KEYLESS ENTRY SYSTEM) .

When the headlights or taillights are on, and the ignition switch is turned from "ON" to "LOCK" (OFF) or "ACC" position or the ignition key is removed, the headlights will be switched off in 3 minutes. If the driver's door is opened within that 3-minute period, the headlights will be switched off automatically. This prevents the battery from discharging.

Hazard Warning Light

The system detects a change from OFF to ON of the hazard warning input signal and activates or shuts off the hazard warning lights accordingly.

DOME LIGHT

With the dome light switch in the "Door Controlled Operation" (middle) position, the ETACS-ECU controls the dome light operation as follows

1. When A Door Is Opened From Outside Or Inside With The Ignition Switch Turned To "Lock" (OFF) When a door is opened, the ETACS-ECU causes the dome light to be illuminated at 100% intensity. When the door is closed, it dims the dome light to 65% intensity and approximately 30 seconds later, turns out the light completely. During this period (timer controlled period), the dome light goes out if the ignition switch is turned "ON" or the doors are locked.
2. When A Door Is Opened Or Closed With The Ignition Switch In The "ON" Position The dome light illuminates at 100% intensity when a door is opened and turned out when it is closed.
3. When No Door Is Opened And The Ignition Key Is Removed The dome light is illuminated at 100% intensity and turned off approximately 30 seconds later. During that time (timer-controlled period), the dome light goes out if the ignition key is inserted and turned to "ON" or the door locking system is activated.
4. Dome Light's Answerback Operation In Response To Door Lock Control By Keyless Entry System To allow the driver to confirm the doors have locked by the keyless entry system, the ETACS-ECU causes the dome light to blink twice when the doors are locked by the RKE system and to illuminate for approximately 15 seconds when the doors are locked. The dome lights answerback operation in response to a keyless entry system control action is accompanied by flashing of the hazard warning lights.

Intermittent Control (Vehicle Speed-Dependent Variable Type)

Note. The vehicle speed-dependent function can be disabled by the adjustment procedures of SWS function. See ON-VEHICLE SERVICE .

The ETACS-ECU calculates the intermittent time according to the vehicle speed calculated from the windshield wiper intermittent time adjusting knob and vehicle speed signal (ECM or PCM) and sends it to the front ECU as SWS data. (Scheme 139)

The front-ECU determines the intermittent time T1 from the input SWS data signal, and turns ON the windshield wiper drive signal. When the wiper is at the STOP position, the windshield wiper auto-stop signal goes OFF to turn OFF the windshield wipe drive signal. After the intermittent time T1 seconds from when the windshield wiper drive signal turned ON, the windshield wiper drive signal is turned ON again and the above operation is repeated.

Scheme 139

Mist Wiper Control

When the ignition switch is at the ACC or ON position, if the windshield mist wiper switch of the column switch is turned ON, the front-ECU turns ON the windshield wiper drive signal. At the same time, the wiper speed switching relay is turned ON (HIGH-SPEED). While the windshield mist wiper switch is ON, the windshield wiper will operate at high speed. Then, if the windshield mist wiper switch is turned off, the wiper operates at low speed until it stops at the predetermined park position.

When the windshield mist switch is turned on briefly, the wiper operates at low speed once. At the point the windshield mist switch is turned ON, if the windshield wiper has been operating intermittently, the same operations as the above will be performed while the windshield mist wiper switch is ON. After the windshield mist wiper switch goes OFF, the intermittent operations will be set again T1 seconds after the windshield wiper auto-stop signal is turned ON last. (Scheme 140)

Scheme 140

Low Speed Wiper, High Speed Wiper Control

When the ignition switch is at the ACC or ON position, if the windshield low speed wiper switch of the column switch is turned ON, the front-ECU turns ON the windshield wiper drive signal, turns OFF (LOW) the windshield wiper speed switching relay, and operates the windshield wiper at low speed. Next, when the windshield high speed wiper switch is turned ON, the windshield wiper drive signal is turned ON, the windshield wiper speed switching relay is turned ON (HIGH), and the windshield wiper is operated at high speed. (Scheme 141)

Scheme 141

Washer Control

Note. The wiper drive signal output time varies according to the conditions. (Scheme 142)

When the ignition switch is at the ACC or ON position, if the windshield washer switch of the column switch is turned ON, the front-ECU turns ON the windshield washer relay. The windshield wiper drive signal is turned ON in 0.3 seconds until 3 seconds after the windshield washer switch goes OFF to operate the windshield wiper continuously. When the windshield washer switch is turned ON, if the windshield wiper is operating intermittently, intermittent operations will be continued after continuous operations.

Scheme 142

HOW TO CONNECT SWS MONITOR

1. Remove the steering column cover.
2. Remove the steering column switch connector. (Scheme 143)
3. Connect the SWS monitor harness (for column-ECU).

Scheme 143

Scheme 144

HOW TO CHECK ECU'S

1. Use the scan tool and the SWS monitor kit to check ECUs.
2. The following ECUs can be checked by using the scan tool and the SWS monitor kit. (Scheme 145)

Scheme 145

SERVICE DATA CHECK

1. Use the scan tool and the SWS monitor kit to check "Service Data." This "Service Data" check is applicable for signals, which are transmitted and received through the SWS communication line. For input signals, which are not compatible with the SWS monitor kit, refer to the Pulse Check procedure (by using the scan tool or voltmeter). See «PULSE CHECK»(ref-169966-S24822898752004122200000) .
2. The following input signals can be checked by using the scan tool and the SWS monitor kit.

Column-ECU (Column Switch)

Checking Service Data (Column-ECU)

ETACS-ECU

Checking Service Data (ETACS-ECU)

Front-ECU

Checking Service Data (Front-ECU)

PULSE CHECK

1. The input signals (signals other than SWS communication line signals), which are compatible with the SWS monitor by using the scan tool or voltmeter, can be confirmed by the Pulse Check.
2. Use the scan tool or voltmeter to check the following input signals.

Scheme 146

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Scheme 151

Scheme 152

Scheme 153

ECU COMMUNICATION SYSTEM

ECU COMMUNICATION SYSTEM SYMPTOM CHART

FUNCTION SYSTEM

FUNCTION SYSTEM SYMPTOM CHART

Scheme 154

Scheme 155

Step 1: Verify SWS Monitor Kit MB91862 For Proper Connection

Is SWS monitor kit MB991862 connected with the column switch properly?

1. YES Go to step «2»(ref-169966-S04383873872004122200000) .
2. NO Connect SWS monitor kit MB991862 to the column switch securely.

Step 2: Verify The Power Supply Circuit To The ETACS-ECU

Does the system communicate with scan tool MB991502 when the ignition switch is turned to the "ON" position?

1. YES See «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS NOT POSSIBLE»(ref-169966-S26128465402004122200000) .
2. NO Go to step «3»(ref-169966-S05550772312004122200000) .

Step 3: Check The Ground Circuit To The ETACS-ECU

Test At ETACS-ECU Connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the resistance available at the junction block side of the connector.
2. Measure the resistance value between terminal No. 3 and ground. (Scheme 156) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «6»(ref-169966-S24221743172004122200000) .
2. NO Go to step «4»(ref-169966-S37791777142004122200000) .

Scheme 156

Step 4: Check ETACS-ECU Connector C-226 And C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is ETACS-ECU connector C-226 and C-228 in good condition?

1. YES Go to step «5»(ref-169966-S00106577392004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the SWS monitor normally.

Step 6: Check ETACS-ECU Connector C-228 And Data Link Connector C-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-228 and data link connector C-14 in good condition?

1. YES Go to step «7»(ref-169966-S10145023302004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the SWS monitor kit normally.

Step 2: Check Column Switch Connector C-206 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is column switch connector C-206 in good condition?

1. YES Go to step «3»(ref-169966-S12564331472004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the column switch (column-ECU) normally.

Step 3: Check The Battery Power Supply Circuit To The Column Switch

Test at column switch connector C-206.

1. Column switch connector C-206 and measure the voltage available at the wiring harness side of the connector.
2. Measure the voltage between terminal No. 1 and ground by backprobing. (Scheme 157) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «6»(ref-169966-S21466463612004122200000) .
2. NO Go to step «4»(ref-169966-S08206549882004122200000) .

Scheme 157

Step 4: Check Column Switch Connector C-206 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is column switch connector C-206 in good condition?

1. YES Go to step «5»(ref-169966-S33141451312004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the column switch (column-ECU) normally.

Step 6: Check The Ground Circuit To The Column Switch

Test at column switch connector C-206.

1. Disconnect column switch connector C-206 and measure the resistance available at the harness side of the connector.
2. Measure the resistance value between terminal No. 4 and ground. (Scheme 158) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «9»(ref-169966-S17954572232004122200000) .
2. NO Go to step «7»(ref-169966-S40823286552004122200000) .

Scheme 158

Step 7: Check Column Switch Connector C-206 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is column switch connector C-206 in good condition?

1. YES Go to step «8»(ref-169966-S10911008892004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the column switch (column-ECU) normally.

Step 9: Check Column Switch Connector C-206 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are column switch connector C-206 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «10»(ref-169966-S27375721542004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the column switch (column-ECU) normally.

Step 11: Check Column Switch Connector C-206 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are column switch connector C-206 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «12»(ref-169966-S19770931422004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the column switch (column-ECU) normally.

Step 1: Check The Battery Power Supply Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Measure the voltage between terminal No. 20 and ground. (Scheme 159) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «4»(ref-169966-S08913326722004122200000) .
2. NO Go to step «2»(ref-169966-S07857122862004122200000) .

Scheme 159

Step 2: Check ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «3»(ref-169966-S27016821432004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the ETACS-ECU normally.

Step 4: Check The Ground Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the resistance available at the junction block side of the connector.
2. Measure the resistance value between terminal No. 3 and ground. (Scheme 160) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «7»(ref-169966-S24679043572004122200000) .
2. NO Go to step «5»(ref-169966-S23011839802004122200000) .

Scheme 160

Step 5: Check ETACS-ECU Connector C-226 And C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is ETACS-ECU connector C-226 and C-228 in good condition?

1. YES Go to step «6»(ref-169966-S12853408112004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the ETACS-ECU normally.

Step 7: Check Column Switch Connector C-206 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are column switch connector C-206 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «8»(ref-169966-S21884769602004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the column switch (column-ECU) normally.

Are column switch connector C-206 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «10»(ref-169966-S05062975562004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the ETACS-ECU normally.

Step 2: Check The Battery Power Supply Circuit To The FRONT-ECU

Test at front-ECU connector A-10X.

1. Disconnect front-ECU connector A-10X and measure the voltage available at the relay box side of the connector.
2. Measure the voltage between terminal No. 7 and ground. (Scheme 161) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «5»(ref-169966-S18819939472004122200000) .
2. NO Go to step «3»(ref-169966-S39650449432004122200000) .

Scheme 161

Step 3: Check The Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the front-ECU connector A-10X in good condition?

1. YES Go to step «4»(ref-169966-S25113065252004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the front-ECU normally.

Step 5: Check The Ground Circuit To The Front-ECU

Test at front-ECU connector A-11X.

1. Disconnect front-ECU connector A-11X and measure the resistance available at the relay box side of the connector.
2. Measure the resistance value between terminal 31 and ground. (Scheme 162) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «8»(ref-169966-S34533232942004122200000) .
2. NO Go to step «6»(ref-169966-S14817669052004122200000) .

Scheme 162

Step 6: Check The Front-ECU Connector A-11X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is front-ECU connector A-11X in good condition?

1. YES Go to step «7»(ref-169966-S29985033932004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the front-ECU normally.

Step 8: Check The Front-ECU Connector A-11X And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front-ECU connector A-11X and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «9»(ref-169966-S32728575592004122200000) .
2. NO Repair or replace the damaged component(s). The system should communicate with the front-ECU normally.

Step 2: Check The Input Signal By Using "FUNCTION DIAG." Menu Of The SWS Monitor

Check the input signals from the following switches

1. Ignition Switch OFF (key inserted)
2. Driver's Door Open
3. Front Passenger'S Door Closed

Operate scan tool MB991502 according to the procedure below to display "KEY RMND. ALM."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "BUZZER."
6. Select "KEY RMND. ALM."

Note. The scan tool display changes when the driver's or the front passenger's door is opened. If any of the doors is open, the system can not be checked correctly.

Check that normal conditions are displayed on the items described in the table below. (Scheme 163)

Are normal conditions displayed on the "IG SW (IG1)", "FRONT DOOR SW" and "BUZZER"?

1. YES Replace the ETACS-ECU. The ignition key reminder tone alarm function should now work normally.
2. NO Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "FRONT DOOR SW": See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) . Normal condition is not displayed on the "BUZZER": Go to step «3»(ref-169966-S19567335472004122200000) .

Scheme 163

Step 3: Check The Input Signal By Using The Pulse Check Mode Of The Monitor

Check the input signals from the key reminder switch. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK." Check whether scan tool MB991502 sounds or not when the ignition key is removed and reinserted.

Does scan tool MB991502 sound when the ignition key is removed and reinserted?

1. YES Replace the ETACS-ECU. The ignition key reminder tone alarm function should now work normally.
2. NO See «INSPECTION PROCEDURE N-1: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE KEY REMINDER SWITCH»(ref-169966-S12099259662004122200000) .

Scheme 164

Check the input signals from the following switches

1. Ignition Switch OFF (Key Removed)
2. Lighting Switch TAIL or HEAD
3. Driver's Door Open
4. Front Passenger'S Door Closed

Operate scan tool MB991502 according to the procedure below to display "LGT MONI. ALRM."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "BUZZER."
6. Select "LGT MONI. ALRM."

Check that normal conditions are displayed on the items. (Scheme 165)

Note. The scan tool display changes when the driver's or the front passenger's door is opened. If any of the doors is open, the system can not be checked correctly.

Are normal conditions displayed for "HEADLIGHT SW", "TAILLIGHT SW", "IG SW (IG1)", "FRONT DOOR SW", "H/L AUTO-CUT" and "BUZZER"?

1. YES Replace the ETACS-ECU. The light reminder tone alarm function should now work normally.
2. NO Normal condition is not displayed on the "HEADLIGHT SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "TAILLIGHT SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "FRONT DOOR SW": See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) . Normal condition is not displayed on the "H/L AUTO-CUT": See «INSPECTION PROCEDURE J-9: HEADLIGHT AND TAILLIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-169966-S25580237892004122700000) . Normal condition is not displayed on the "BUZZER": Replace the ETACS-ECU. The light reminder tone alarm function should now work normally.

Scheme 165

Scheme 166

Step 2: Check The Input Signal By Using "DATA LIST" Menu Of The SWS Monitor

Turn the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1). Operate scan tool MB991502 according to the procedure below to display "ETACS ECU."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."

Check that normal conditions are displayed on the items described. (Scheme 167)

Is normal condition displayed on the "IG SW (IG1)"?

1. YES Go to step «3»(ref-169966-S16828416342004122700000) .
2. NO See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) .

Scheme 167

Check input signal from the driver's side seat belt switch. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK." When the driver's seat belt is unfastened, check if scan tool MB991502 sounds or not.

Does scan tool MB991502 sound when the driver's side seat belt is unfastened?

1. YES Replace the ETACS-ECU. Verify that the seat belt tone alarm function works normally.
2. NO See «INSPECTION PROCEDURE N-3: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S SEAT BELT SWITCH»(ref-169966-S08803254102004122700000) .

Scheme 168

Scheme 169

Step 2: Check The Fusible Link (1) Line Of Power Supply Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Measure the voltage between terminal 2 and ground. (Scheme 170) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «5»(ref-169966-S15961336452004122700000) .
2. NO Go to step «3»(ref-169966-S17713567712004122700000) .

Scheme 170

Step 3: Check ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «4»(ref-169966-S11719137382004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the central door locking system works normally.

Step 5: Check ETACS-ECU Connectors C-226, C-227 And Driver's Door Lock Actuator Connector E-04 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connectors C-226, C-227 and driver's door lock actuator connector E-04 in good condition?

1. YES Go to step «6»(ref-169966-S37066567662004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the central door locking system works normally.

Step 1: Verify Which Door Lock Is Defective

Which of the door locks is defective?

1. Driver's Door Go to step «2»(ref-169966-S20854509492004122700000) .
2. Front Passenger's Door Go to step «5»(ref-169966-S33365491412004122700000) .
3. Rear Door (LH) Go to step «8»(ref-169966-S02632556622004122700000) .
4. Rear Door (RH) Go to step «11»(ref-169966-S14540093692004122700000) .

Step 2: Check The Driver's Door Lock Actuator

1. Remove the driver's door lock actuator, and check it.
2. Follow the table below to check the driver's door lock actuator for correct operation. (Scheme 171)

Does the driver's door lock actuator work normally?

1. YES Go to step «3»(ref-169966-S01965284782004122700000) .
2. NO Replace the driver's door lock actuator. Verify that all the doors can be locked and unlocked normally.

Scheme 171

Step 3: Check ETACS-ECU Connectors C-226, C-227 And Driver's Door Lock Actuator Connector E-04 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connectors C-226, C-227 and driver's door lock actuator connector E-04 in good condition?

1. YES Go to step «4»(ref-169966-S01621619652004122700000) .
2. NO Repair or replace the damaged component(s). Verify that all the doors can be locked and unlocked normally.

Step 5: Check The Front Passenger's Door Lock Actuator

1. Remove the passenger's door lock actuator, and check it.
2. Follow the table below to check the passenger's door lock actuator for correct operation. (Scheme 172)

Is the front passenger's seat door lock actuator normal?

1. YES Go to step «6»(ref-169966-S07714149532004122700000) .
2. NO Replace the front passenger's seat door lock actuator. Verify that all the doors can be locked and unlocked normally.

Scheme 172

Step 6: Check ETACS-ECU Connector C-226 And Front Passenger's Door Lock Actuator Connector E-15 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-226 and passenger's seat door lock actuator connector E-15 in good condition?

1. YES Go to step «7»(ref-169966-S36828825512004122700000) .
2. NO Repair or replace the damaged component(s). Verify that all the doors can be locked and unlocked normally.

Step 8: Check The Rear Door Lock Actuator (LH)

1. Remove the rear door lock actuator (LH), and check it.
2. Follow the table below to check the rear door lock actuator (LH) for correct operation. (Scheme 173)

Does the rear door lock actuator (LH) work normally?

1. YES Go to step «9»(ref-169966-S01408555472004122700000) .
2. NO Replace the rear door lock actuator (LH). Verify that all the doors can be locked and unlocked normally.

Scheme 173

Step 9: Check ETACS-ECU Connector C-226 And Rear Door Lock Actuator (LH) Connector E-07 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-226 and rear door lock actuator (LH) connector E-07 in good condition?

1. YES Go to step «10»(ref-169966-S30062545492004122700000) .
2. NO Repair or replace the damaged component(s). Verify that all the doors can be locked and unlocked normally.

Step 11: Check The Rear Door Lock Actuator (RH)

1. Remove the rear door lock actuator (RH), and check it.
2. Follow the table below to check the rear door lock actuator (RH) for correct operation. (Scheme 174)

Does the rear door lock actuator (RH) work normally?

1. YES Go to step «12»(ref-169966-S14828565122004122700000) .
2. NO Replace the rear door lock actuator (RH). Verify that all the doors can be locked and unlocked normally.

Scheme 174

Step 12: Check ETACS-ECU Connector C-226 And Rear Door Lock Actuator (RH) Connector E-18 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-226 and rear door lock actuator (RH) connector E-18 in good condition?

1. YES Go to step «13»(ref-169966-S13316228512004122700000) .
2. NO Repair or replace the damaged component(s). Verify that all the doors can be locked and unlocked normally.

Turn the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1).

1. Operate the MUT-II as follows: Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "DATA LIST." Select "ETACS ECU."
2. Check that normal conditions are displayed on the items described below. (Scheme 175)

Is normal condition displayed?

1. YES Go to step «3»(ref-169966-S17684504122004122700000) .
2. NO See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) .

Scheme 175

Step 3: Check The Power Window Relay

Is the power window relay normal? (Scheme 176)

1. YES Go to step «4»(ref-169966-S36593851302004122700000) .
2. NO Replace the power window relay. Verify that the power windows work normally.

Scheme 176

Step 4: Check The Fusible Link (5) Line Of Power Supply Circuit To The Power Window Relay

Test at power window relay connector C-224.

1. Disconnect power window relay connector C-224 and measure the voltage available at the junction block side of the connector.
2. Measure the voltage between terminal No. 5 and ground. (Scheme 177) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «7»(ref-169966-S15871472262004122700000) .
2. NO Go to step «5»(ref-169966-S19448170532004122700000) .

Scheme 177

Step 5: Check Power Window Relay Connector C-224 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is power window relay connector C-224 in good condition?

1. YES Go to step «6»(ref-169966-S35924689312004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the power windows work normally.

Step 7: Check The Ground Circuit To The Power Window Relay

Test at power window relay connector C-224.

1. Disconnect power window relay connector C-224 and measure the resistance available at the junction block side of the connector.
2. Measure the resistance value between terminal No. 3 and ground. (Scheme 178) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «10»(ref-169966-S07990145852004122700000) .
2. NO Go to step «8»(ref-169966-S08616604032004122700000) .

Scheme 178

Step 8: Check Power Window Relay Connector C-224 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is power window relay connector C-224 in good condition?

1. YES Go to step «9»(ref-169966-S27027079362004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the power windows work normally.

Step 10: Check The Ground Circuit To The Power Window Main Switch

Test at power window main switch connector E-05.

1. Disconnect power window main switch connector E-05 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 12 and ground. (Scheme 179) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «13»(ref-169966-S22072249412004122700000) .
2. NO Go to step «11»(ref-169966-S37712559632004122700000) .

Scheme 179

Step 11: Check Power Window Main Switch Connector E-05 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is power window main switch connector E-05 in good condition?

1. YES Go to step «12»(ref-169966-S03044621712004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the power windows work normally.

Step 13: Check The Battery Power Supply Circuit To The Power Window Main Switch

Test at power window main switch connector E-05.

1. Disconnect power window main switch connector E-05 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 13 and ground. (Scheme 180) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the power window main switch. Verify that the power windows work normally.
2. NO Go to step «14»(ref-169966-S35873279732004122700000)

Scheme 180

Step 14: Check Power Window Relay Connector C-224 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window relay connector C-224 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «15»(ref-169966-S37730318902004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the power windows work normally.

Step 15: Check Power Window Relay Connector C-224 And Power Window Main Switch Connector E-05 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window relay connector C-224 and power window main switch connector E-05 in good condition?

1. YES Go to step «16»(ref-169966-S31529693522004122700000) .
2. NO Repair or replace the damaged component(s). Verify that the power windows work normally.

1. Check the input signals from the following switches: Ignition Switch ON to OFF Driver's And Front Passenger's Doors Closed
2. Operate scan tool MB991502 according to the procedure below to display "ETACS ECU." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "DATA LIST." Select "ETACS ECU."
3. Check that normal conditions are displayed on the items described in the table below. (Scheme 181)

Are normal conditions displayed on the "IG SW (IG1)" and "FRONT DOOR SW"?

1. YES Replace the ETACS-ECU. Verify that the power window timer works normally.
2. NO Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "FRONT DOOR SW": See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) .

Scheme 181

Scheme 182

Step 1: Check The Power Window Main Switch

1. Remove the power window main switch.
2. Check continuity while power window main switch is moved to "UP" and "DOWN" position. (Scheme 183)

Is the power window main switch normal?

1. YES Go to step «2»(ref-169966-S31760954562004122700000) .
2. NO Replace the power window main switch. When the power window main switch is operated, the front power window (LH) should open and close normally.

Scheme 183

Step 2: Check The Front Power Window Motor (LH)

1. Remove the front power window motor (LH).
2. Connect a battery to the motor terminal, and check that the motor runs freely. (Scheme 184)

Is the front power window motor (LH) normal?

1. YES Go to step «3»(ref-169966-S06991102892004122700000) .
2. NO Replace the front power window motor (LH). When the power window main switch is operated, the front power window (LH) should open and close normally.

Scheme 184

Step 3: Check Power Window Main Switch Connector E-05 And Front Power Window Motor (LH) Connector E-02 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and front power window motor (LH) connector E-02 in good condition?

1. YES Go to step «4»(ref-169966-S16725379692004122700000) .
2. NO Repair or replace the damaged component(s). When the power window main switch is operated, the front power window (LH) should open and close normally.

Step 1: Check Each Switch On The Power Window Main Switch For Continuity

1. Remove the power window main switch.
2. Check continuity when each switch on the power window main switch is operated to "UP" or "DOWN" position. (Scheme 185)

Is the power window main switch normal?

1. YES Go to step «2»(ref-169966-S19791885712004122700000) .
2. NO Replace the power window main switch. When the power window sub-switch is operated, the power windows should open or close normally.

Scheme 185

Step 2: Check The Power Window Lock Switch

Is the power window lock switch at the "UNLOCK" position?

1. YES Go to step «3»(ref-169966-S08178869502004122700000) .
2. NO Operate the power window lock switch to the "UNLOCK" position. When the power window sub-switch is operated, the power windows should open or close normally.

Step 3: Check Which Door Window Is Not Opened Or Closed

Which door window is opened or closed?

1. Passenger'S Side Go to step «4»(ref-169966-S36772529122004122700000) .
2. Rear Passenger (LH) Go to step «17»(ref-169966-S17976333872004122700000) .
3. Rear Passenger (RH) Go to step «30»(ref-169966-S31563030362004122700000) .

Step 4: Check The Front Power Window Sub-Switch (RH) For Continuity

1. Remove the front power window sub-switch (RH).
2. Check continuity when the front power window sub-switch (RH) is operated to "UP" or "DOWN" position. (Scheme 186)

Is the front power window sub-switch (RH) normal?

1. YES Go to step «5»(ref-169966-S09592403432004122700000) .
2. NO Replace the front power window sub-switch (RH). When the front power window sub-switch (RH) is operated, the front power window (RH) should open or close normally.

Scheme 186

Step 5: Check The Front Power Window Motor (RH)

1. Remove the front power regulator assembly (RH).
2. Connect a battery to the motor terminal, and check that the motor runs freely. (Scheme 187)

Is the front power window motor (RH) normal?

1. YES Go to step «6»(ref-169966-S09729943922004122700000) .
2. NO Replace the front power regulator assembly (RH). When the front power window sub-switch (RH) is operated, the front power window (RH) should open or close normally.

Scheme 187

Step 6: Check The Battery Power Supply Circuit To The Front Power Window Sub-Switch (RH)

Test at front power window sub-switch (RH) connector E-14.

1. Disconnect front power window sub-switch (RH) connector E-14 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 5 and ground. (Scheme 188) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «9»(ref-169966-S40719580572004122700000) .
2. NO Go to step «7»(ref-169966-S09136003652004122700000) .

Scheme 188

Step 7: Check Power Window Relay Connector C-224 And Front Power Window Sub-Switch Connector E-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window relay connector C-224 and front power window sub-switch (RH) connector E-14 in good condition?

1. YES Go to step «8»(ref-169966-S11548181862004122700000) .
2. NO Repair or replace the damaged component(s). When the front power window sub-switch (RH) is operated, the front power window (RH) should open or close normally.

Step 9: Check The Ground Circuit To The Front Power Window Sub-Switch (RH)

Test at front power window sub-switch (RH) connector E-14.

1. Disconnect front power window sub-switch (RH) connector E-14 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 4 and ground. (Scheme 189) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «12»(ref-169966-S34908989982004122700000) .
2. NO Go to step «10»(ref-169966-S15026430182004122700000) .

Scheme 189

Step 10: Check Power Window Main Switch Connector E- 05 And Front Power Window Sub-Switch (RH) Connector E-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and front power window sub-switch (RH) connector E-14 in good condition?

1. YES Go to step «11»(ref-169966-S11763310972004122700000) .
2. NO Repair or replace the damaged component(s). When the front power window sub-switch (RH) is operated, the front power window (RH) should open or close normally.

Step 12: Check The Ground Circuit To The Front Power Window Sub-Switch (RH)

Test at front power window sub-switch (RH) connector E-14.

1. Disconnect front power window sub-switch (RH) connector E-14 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 8 and ground. (Scheme 190) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «15»(ref-169966-S31887012232004122700000) .
2. NO Go to step «13»(ref-169966-S28400610132004122700000) .

Scheme 190

Step 13: Check Power Window Main Switch Connector E-05 And Front Power Window Sub-Switch (RH) Connector E-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and front power window sub-switch (RH) connector E-14 in good condition?

1. YES Go to step «14»(ref-169966-S32198658732004122700000) .
2. NO Repair or replace the damaged component(s). When the front power window sub-switch (RH) is operated, the front power window (RH) should open or close normally.

Step 15: Check Front Power Window Sub-Switch (RH) Connector E-14 And Front Power Window Motor (RH) Connector E-11 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front power window sub-switch (RH) connector E-14 and front power window motor (RH) connector E-11 in good condition?

1. YES Go to step «16»(ref-169966-S04846306722004122700000) .
2. NO Repair or replace the damaged component(s). When the front power window sub-switch (RH) is operated, the front power window (RH) should open or close normally.

Step 17: Check The Rear Power Window Sub-Switch (LH) For Continuity

1. Remove the rear power window sub-switch (LH).
2. Check continuity when the rear power window sub-switch (LH) is operated to "UP" or "DOWN" position. (Scheme 191)

Is the rear power window sub-switch (LH) normal?

1. YES Go to step «18»(ref-169966-S36588218022004122700000) .
2. NO Replace the rear power window sub-switch (LH). When the rear power window sub-switch (LH) is operated, the rear power window (LH) should open or close normally.

Scheme 191

Step 18: Check The Rear Power Window Motor (LH)

1. Remove the rear power regulator assembly (LH).
2. Connect a battery to the motor terminal, and check that the motor runs freely. (Scheme 192)

Is the rear power window motor (LH) normal?

1. YES Go to step «19»(ref-169966-S25119415332004122700000) .
2. NO Replace the rear power regulator assembly (LH). When the rear power window sub-switch (LH) is operated, the rear power window (LH) should open or close normally.

Scheme 192

Step 19: Check The Battery Power Supply Circuit To The Rear Power Window Sub-Switch (LH)

Test at rear power window sub-switch (LH) connector E-08.

1. Disconnect rear power window sub-switch (LH) connector E-08 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 5 and ground. (Scheme 193) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «22»(ref-169966-S24785876742004122700000) .
2. NO Go to step «20»(ref-169966-S28890726302004122700000) .

Scheme 193

Step 20: Check Power Window Relay Connector C-224 And Rear Power Window Sub-Switch (LH) Connector E-08 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window relay connector C-224 and rear power window sub-switch (LH) connector E-08 in good condition?

1. YES Go to step «21»(ref-169966-S40926178082004122700000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (LH) is operated, the rear power window (LH) should open or close normally.

Step 22: Check The Ground Circuit To The Rear Power Window Sub-Switch (LH)

Test at rear power window sub-switch (LH) connector E-08.

1. Disconnect rear power window sub-switch (LH) connector E-08 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 4 and ground. (Scheme 194) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «25»(ref-169966-S22093458682004122700000) .
2. NO Go to step «23»(ref-169966-S40767329822004122700000) .

Scheme 194

Step 23: Check Power Window Main Switch Connector E- 05 And Rear Power Window Sub-Switch (LH) Connector E-08 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and rear power window sub-switch (LH) connector E-08 in good condition?

1. YES Go to step «24»(ref-169966-S36666271202004122700000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (LH) is operated, the rear power window (LH) should open or close normally.

Step 25: Check The Ground Circuit To The Rear Power Window Sub-Switch (LH)

Test at rear power window sub-switch (LH) connector E-08.

1. Disconnect rear power window sub-switch (LH) connector E-08 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 8 and ground. (Scheme 195) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «28»(ref-169966-S28525829062004122700000) .
2. NO Go to step «26»(ref-169966-S42773320252004122700000) .

Scheme 195

Step 26: Check Power Window Main Switch Connector E-05 And Rear Power Window Sub-Switch (LH) Connector E-08 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and rear power window sub-switch (LH) connector E-08 in good condition?

1. YES Go to step «27»(ref-169966-S09334130542004122700000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (LH) is operated, the rear power window (LH) should open or close normally.

Step 28: Check Rear Power Window Sub-Switch (LH) Connector E-08 And Rear Power Window Motor (LH) Connector E-09 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear power window sub-switch (LH) connector E-08 and rear power window motor (LH) connector E-09 in good condition?

1. YES Go to step «29»(ref-169966-S20035083502004122700000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (LH) is operated, the rear power window (LH) should open or close normally.

Step 30: Check The Rear Power Window Sub-Switch (RH) For Continuity

1. Remove the rear power window sub-switch (RH). See «DOOR TRIM & WATERPROOF FILM»(ref-169814-S40702715712004121600000) under REMOVAL & INSTALLATION in POWER WINDOWS article.
2. Check continuity when the rear power window sub-switch (RH) is operated to "UP" or "DOWN" position. (Scheme 196)

Is the rear power window sub-switch (RH) normal?

1. YES Go to step «31»(ref-169966-S29635532172004122800000) .
2. NO Replace the rear power window sub-switch (RH). When the rear power window sub-switch (RH) is operated, the rear power window (RH) should open or close normally.

Scheme 196

Step 31: Check The Rear Power Window Motor (RH)

1. Remove the rear power regulator assembly (RH). See «DOOR GLASS & REGULATOR»(ref-169814-S04882886682004121600000) under REMOVAL & INSTALLATION in POWER WINDOWS article.
2. Connect a battery to the motor terminal, and check that the motor runs freely. (Scheme 197)

Is the rear power window motor (RH) normal?

1. YES Go to step «32»(ref-169966-S30755191102004122800000) .
2. NO Replace the rear power regulator assembly (RH). When the rear power window sub-switch (RH) is operated, the rear power window (RH) should open or close normally.

Scheme 197

Step 32: Check The Battery Power Supply Circuit To The Rear Power Window Sub-Switch (RH)

Test at rear power window sub-switch (Rh) connector E-17.

1. Disconnect rear power window sub-switch (RH) connector E-17 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 5 and ground. (Scheme 198) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «35»(ref-169966-S25365387972004122800000) .
2. NO Go to step «33»(ref-169966-S09191893842004122800000) .

Scheme 198

Step 33: Check Power Window Relay Connector C-224 And Rear Power Window Sub-Switch (RH) Connector E-17 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window relay connector C-224 and rear power window sub-switch (RH) connector E-17 in good condition?

1. YES Go to step «34»(ref-169966-S21300430172004122800000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (RH) is operated, the rear power window (RH) should open or close normally.

Step 35: Check The Ground Circuit To The Rear Power Window Sub-Switch (RH)

Test at rear power window sub-switch (RH) connector E-17.

1. Disconnect rear power window sub-switch (RH) connector E-17 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal 4 and ground. (Scheme 199) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «38»(ref-169966-S16502221392004122800000) .
2. NO Go to step «36»(ref-169966-S25365387972004122800000) .

Scheme 199

Step 36: Check Power Window Main Switch Connector E- 05 And Rear Power Window Sub-Switch (RH) Connector E-17 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and rear power window sub-switch (RH) connector E-17 in good condition?

1. YES Go to step «37»(ref-169966-S27098226982004122800000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (RH) is operated, the rear power window (RH) should open or close normally.

Step 38: Check The Ground Circuit To The Rear Power Window Sub-Switch (RH)

Test at rear power window sub-switch (RH) connector E-17.

1. Disconnect rear power window sub-switch (RH) connector E-17 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 8 and ground. (Scheme 200) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «41»(ref-169966-S04852445132004122800000) .
2. NO Go to step «39»(ref-169966-S19517206862004122800000) .

Scheme 200

Step 39: Check Power Window Main Switch Connector E- 05 And Rear Power Window Sub-Switch (RH) Connector E-17 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and rear power window sub-switch (RH) connector E-17 in good condition?

1. YES Go to step «40»(ref-169966-S33366392512004122800000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (RH) is operated, the rear power window (RH) should open or close normally.

Step 41: Check Rear Power Window Sub-Switch (RH) Connector E-17 And Rear Power Window Motor (RH) Connector E-16 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear power window sub-switch (RH) connector E-17 and rear power window motor (RH) connector E-16 in good condition?

1. YES Go to step «42»(ref-169966-S12995498302004122800000) .
2. NO Repair or replace the damaged component(s). When the rear power window sub-switch (RH) is operated, the rear power window (RH) should open or close normally.

Step 1: Verify The Central Door Locking System

Does the central door locking system work normally?

1. YES Go to Step 2.
2. NO See «INSPECTION PROCEDURE C-1: CENTRAL DOOR LOCKING SYSTEM: THE CENTRAL DOOR LOCK SYSTEM DOES NOT WORK AT ALL»(ref-169966-S42120120322004122700000) .

Step 2: Check The Input Signal By Using The Pulse Check Mode Of The Monitor

Check input signals from the transmitter.

1. Connect scan tool MB991502 to the data link connector.
2. Operate scan tool MB991502 as follows: Select "SYSTEM SELECT." Select "SWS." Select "PULSE CHECK."
3. Push the transmitter "LOCK" or "UNLOCK" switch.
4. Check that scan tool MB991502 sounds.

When the transmitter "LOCK" or "UNLOCK" switch is turned ON, does scan tool MB991502 sound?

1. YES Replace the ETACS-ECU. All the doors can be locked or unlocked by means of the transmitter.
2. NO See «INSPECTION PROCEDURE N-9: TRANSMITTER: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE LOCK OR UNLOCK SWITCH»(ref-169966-S40571226982004122800000) .

Scheme 201

Scheme 202

Step 1: Verify The Keyless Entry System

Does the keyless entry system work normally?

1. YES Go to step «2»(ref-169966-S29367149762004122800000) .
2. NO See «INSPECTION PROCEDURE E-1: KEYLESS ENTRY SYSTEM: KEYLESS ENTRY SYSTEM DOES NOT OPERATE»(ref-169966-S08055129382004122800000) .

Step 2: Check The Configuration Function

Has the answerback function been enabled by means of the adjustment function?

1. YES Go to step «3»(ref-169966-S07437195742004122800000) .
2. NO Enable the answerback function by means of the adjustment function. Verify that the answerback functions work normally.

Step 4: Verify The Dome Light

Does the dome light illuminate normally?

1. YES Replace the ETACS-ECU. Verify that the answerback functions work normally.
2. NO See «INSPECTION PROCEDURE L-1: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT AND LUGGAGE COMPARTMENT LIGHT DO NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S02166090922004122800000) .

Step 5: Verify The Hazard Warning Light

Does the hazard warning light work normally?

1. YES Replace the ETACS-ECU. Verify that the answerback functions work normally.
2. NO See «INSPECTION PROCEDURE K-2: FLASHER TIMER: HAZARD WARNING LIGHTS DO NOT FLASH WHEN THE HAZARD WARNING LIGHT SWITCH IS TURNED ON»(ref-169966-S11015366102005010400000) .

Step 7: Verify Which Horn Is Defective

Which horn does not sound?

1. Horn (HIGH) Go to step «8»(ref-169966-S04581271092004122800000) .
2. Horn (LOW) Go to step «11»(ref-169966-S24940731492004122800000) .
3. Horn (HIGH or LOW) Go to step «15»(ref-169966-S09708022672004122800000) .

Step 8: Check The Horn

Connect the battery, and verify that the horn sounds. (Scheme 203)

Is the horn normal?

1. YES Go to step «9»(ref-169966-S32455142602004122800000) .
2. NO Replace the horn. Verify that the horn sounds normally.

Scheme 203

Step 9: Check Horn Relay Connector A-05X And Horn (HIGH) Connector A-18 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are horn relay connector A-05X and horn (HIGH) connector A-18 in good condition?

1. YES Go to step «10»(ref-169966-S25202087492004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the horn sounds normally.

Step 11: Check The Horn

Connect the battery, and verify that the horn sounds.

Is the horn normal?

1. YES Go to step «12»(ref-169966-S39994392282004122800000) .
2. NO Replace the horn. Verify that the horn sounds normally.

Step 12: Check Horn Relay Connector A-05X And Horn (LOW) Connector A-19 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are horn relay connector A-05X and horn (LOW) connector A-19 in good condition?

1. YES Go to step «13»(ref-169966-S11019266592004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the horn sounds normally.

Step 14: Check The Fit Of The Horn

Note. The horn is grounded to the vehicle body via its mounting bolt.

When the theft-alarm system is triggered, check the fit of the horn (HIGH or LOW) which does not sound.

Is the horn installed correctly?

1. YES No action is necessary and testing is complete.
2. NO Install the horn correctly. Verify that the horn sounds normally.

Step 15: Check The Horn Relay

Is the horn relay normal? (Scheme 204)

1. YES Go to step «16»(ref-169966-S42269489832004122800000) .
2. NO Replace the horn relay. Verify that the horn sounds normally.

Scheme 204

Step 16: Check The Battery Power Supply Circuit To The Horn Relay

Test at horn relay connector A-05X.

1. Disconnect horn relay connector A-05X and measure the voltage available at the relay box side of the connector.
2. Measure the voltage between terminals No. 2, 4 and ground. (Scheme 205) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES No action is necessary and testing is complete.
2. NO Go to step «17»(ref-169966-S15195093752004122800000) .

Scheme 205

Step 17: Check Horn Relay Connector A-05X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are horn relay connector A-05X in good condition?

1. YES Go to step «18»(ref-169966-S28047213102004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the horn sounds normally.

Step 19: Check Rear Horn Relay Connector A-05X And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are horn relay connector A-05X and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «20»(ref-169966-S22526324752004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the horn sounds normally.

Check the input signals from the following switches

1. Key reminder switch.
2. Hazard warning light switch.

1. Connect scan tool MB991502 to the data link connector.
2. Operate scan tool MB991502 as follows: Select "SYSTEM SELECT." Select "SWS." Select "PULSE CHECK."
3. Check scan tool MB991502 sounds or not.
4. If the switches, which are applicable for the input signal check, are operated. (Scheme 206)

When the key reminder switch and the hazard warning light switch are operated, does scan tool MB991502 sound in each case?

1. YES Replace the ETACS-ECU. Verify that the encrypted code can be registered in the transmitter.
2. NO Scan tool MB991502 does not sound when the ignition key is removed and reinserted: See «INSPECTION PROCEDURE N-1: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE KEY REMINDER SWITCH»(ref-169966-S12099259662004122200000) . Scan tool MB991502 does not sound when the hazard warning light switch is turned from "OFF" to "ON.": See «INSPECTION PROCEDURE N-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE HAZARD WARNING LIGHT SWITCH»(ref-169966-S04640973022004122800000) .

Scheme 206

Step 3: Check The Transmitter

When the transmitter's battery is replaced, can the encrypted code be registered?

1. YES No action is necessary and testing is complete.
2. NO Replace the transmitter. If the encrypted code can not be registered by means of the new transmitter, replace the ETACS-ECU. Verify that the encrypted code can be registered in the transmitter.

Scheme 207

Scheme 208

Step 10: Check The Sunroof Switch

Does the check meet the specifications? (Scheme 209)

1. YES Go to step «11»(ref-169966-S40292856162004122800000) .
2. NO Replace the sunroof switch. The sunroof should now work normally.

Scheme 209

Step 11: Check The Ground Circuit To The Sunroof Switch

Test at sunroof switch connector D-31.

1. Disconnect sunroof switch connector D-31 and measure the resistance available at the wiring component side of the connector.
2. Measure the resistance between terminal No. 4 and ground. (Scheme 210) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «14»(ref-169966-S19797622992004122800000) .
2. NO Go to step «12»(ref-169966-S16540215472004122800000) .

Scheme 210

Step 12: Check The Sunroof Switch Connector D-31 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is sunroof switch connector D-31 in good condition?

1. YES Go to step «13»(ref-169966-S30138879572004122800000) .
2. NO Repair or replace the damaged component(s). The sunroof should now work normally.

1. Turn the ignition switch to the "OFF" position to check the input signals from the following switches.
2. Operate scan tool MB991502 according to the procedure below to display "SUNROOF-OPE." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "SUNROOF." Select "SUNROOF-OPE."
3. Check that normal conditions are displayed on the items described in the table below. (Scheme 211)

Are normal conditions displayed on the "IG SW (IG1)" and "S/R ECU ACK"?

1. YES Replace the sunroof motor assembly. Verify that the sunroof timer function works normally.
2. NO Normal condition is not displayed on the "IG SW(IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "S/R ECU ACK": Replace the sunroof motor assembly. Verify that the sunroof timer function works normally.

Scheme 211

Check the input signals from the ignition switch (ACC) and windshield wiper switch (INT). Operate scan tool MB991502 according to the procedure below to display "F.WIPER INT."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "WIPER."
6. Select "F.WIPER INT." Check that normal conditions are displayed on the items described in the table. (Scheme 212)

Are normal conditions displayed on the "INT WIPER SW" and "FRONT ECU ACK"?

1. YES Go to step «3»(ref-169966-S11887346772004122800000) .
2. NO Normal condition is not displayed on the "INT WIPER SW": Replace the column switch. Verify that the windshield wiper works normally. Normal condition is not displayed on the "FRONT ECU ACK": Replace the front-ECU. Verify that the windshield wiper works normally.

Scheme 212

Step 3: Check The Windshield Wiper Motor

1. Disconnect windshield wiper motor connector B-01.
2. Connect a battery to the windshield wiper motor as shown. Then check the windshield wiper motor operates normally at high and low speeds.

Does the windshield wiper motor operate normally?

1. YES Go to step «4»(ref-169966-S23296963092004122800000) .
2. NO Replace the windshield wiper motor. Verify that the windshield wiper works normally.

Step 4: Check The Ground Circuit To The Windshield Wiper Motor

Test at the connector B-01.

1. Disconnect windshield wiper motor connector B-01 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 5 and ground. (Scheme 213) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «7»(ref-169966-S33330230062004122800000) .
2. NO Go to step «5»(ref-169966-S00369166752004122800000) .

Scheme 213

Step 5: Check Windshield Wiper Motor Connector B-01 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is windshield wiper motor connector B-01 in good condition?

1. YES Go to step «6»(ref-169966-S08298630322004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the windshield wiper works normally.

Step 7: Check The Ignition Switch (IG2) Circuit To The Front-ECU

Test at front-ECU connector A-11X.

1. Disconnect front-ECU A-11X and measure the voltage available at the relay box side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal 30 and ground. (Scheme 214) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the front-ECU. Verify that the windshield wiper works normally.
2. NO Go to step «8»(ref-169966-S18419093782004122800000) .

Scheme 214

Step 8: Check The Front-ECU Connector A-11X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is front-ECU connector A-11X in good condition?

1. YES Go to step «9»(ref-169966-S06811967122004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the windshield wiper works normally.

Step 1: Check The Input Signal By Using "DATA LIST" Menu Of The SWS Monitor

Turn the ignition switch to the "ACC" position before checking input signals from the windshield wiper switch.

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "COLUMN ECU." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "DATA LIST." Select "COLUMN ECU."
4. Check that normal conditions are displayed on the items described in the table below. (Scheme 215)

Is normal condition displayed when the windshield wiper switch is moved to each position?

1. YES Go to step «2»(ref-169966-S03057124722004122800000) .
2. NO See «INSPECTION PROCEDURE M-6: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH, WINDSHIELD WASHER SWITCH, REAR WIPER SWITCH OR REAR WASHER SWITCH»(ref-169966-S18094898912004122800000) .

Scheme 215

Step 2: Check The Windshield Wiper Motor

1. Disconnect windshield wiper motor connector B-01.
2. Connect a battery to the windshield wiper motor. (Scheme 216) Then check the windshield wiper motor operates normally at high and low speeds.

Does the windshield wiper motor operate normally?

1. YES Go to step «3»(ref-169966-S33387939922004122800000) .
2. NO Replace the windshield wiper motor. Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.

Scheme 216

Step 3: Check Windshield Wiper Motor Connector B-01 And Front-ECU Connector A-11X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are windshield wiper motor connector B-01 and front-ECU connector A-11X in good condition?

1. YES Go to step «4»(ref-169966-S00861668062004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.

Step 1: Check The Windshield Wiper Motor

1. Disconnect windshield wiper motor connector B-01.
2. Connect a vehicle speed to operate the wipers at low speed. While the wipers are working, disconnect the battery at positions other than the predetermined park position to stop the wiper motor.
3. When the battery is connected as shown, the motor should run at low speed, and then stop at the predetermined park position.

Does the windshield wiper motor operate normally?

1. YES Go to step «2»(ref-169966-S23262129602004122800000) .
2. NO Replace the windshield wiper motor. The windshield wiper should stop at the predetermined park position.

Step 2: Check The Battery Power Supply Circuit To The Windshield Wiper Motor

Test at the windshield wiper motor connector B-01.

1. Disconnect windshield wiper motor connector B-01 and measure the voltage available at the component side of the connector.
2. Turn the ignition switch to the "ACC" position.
3. Measure the voltage between terminal No. 4 and ground by backprobing. (Scheme 217) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «5»(ref-169966-S29612321182004122800000) .
2. NO Go to Step 3.

Scheme 217

Step 3: Check Windshield Wiper Motor Connector B-01 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is windshield wiper motor connector B-01 in good condition?

1. YES Go to step «4»(ref-169966-S31330018342004122800000) .
2. NO Repair or replace the damaged component(s). Check that the windshield wiper works normally.

Step 5: Check Windshield Wiper Motor Connector B-01 And Front-ECU Connector A-11X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are windshield wiper motor connector B-01 and front-ECU connector A-11X in good condition?

1. YES Go to step «6»(ref-169966-S38698608782004122800000) .
2. NO Repair or replace the damaged component(s). The windshield wiper should stop at the predetermined park position.

Step 1: Check The Input Signal By Using "FUNCTION DIAG." Menu Of The SWS Monitor

Set each switch to the following condition to check input signals from the windshield intermittent wiper interval adjusting knob

1. Ignition switch: ACC
2. Windshield wiper switch: INT
3. Vehicle speed: 0 km/h (mph)

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "F.WIPER INT." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "WIPER." Select "F.WIPER INT."
4. Check that normal conditions are displayed on the items described. (Scheme 218)

Note. Also check that the windshield wiper interval changes smoothly when the windshield intermittent wiper interval adjusting knob is rotated from "SLOW" to "FAST" positions.

Does the value change within the normal range when the windshield intermittent wiper interval adjusting knob is rotated?

1. YES Replace the front-ECU. Check that the windshield intermittent wiper interval changes according to the vehicle speed or while the windshield intermittent wiper interval adjusting knob is rotated.
2. NO See «INSPECTION PROCEDURE M-6: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH, WINDSHIELD WASHER SWITCH, REAR WIPER SWITCH OR REAR WASHER SWITCH»(ref-169966-S18094898912004122800000) .

Scheme 218

Scheme 219

Step 1: Check The Input Signal By Using The Pulse Check Mode Of The Monitor

Check the input signals from the vehicle speed sensor or the vehicle speed signal .

1. Connect scan tool MB991502 to the data link connector.
2. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK." Select "SYSTEM SELECT." Select "SWS." Select "PULSE CHECK."
3. Check that scan tool MB991502 sounds when the vehicle speed exceeds 10 km/h (6.2 mph).

Does scan tool MB991502 sound when the vehicle speed exceeds 10 km/h (6.2 mph)?

1. YES Go to step «2»(ref-169966-S13958802572004122800000) .
2. NO See «INSPECTION PROCEDURE N-8: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE VEHICLE SPEED SENSOR (M/T)»(ref-169966-S37055879082004122800000) or «INSPECTION PROCEDURE N-8: ETACS-ECU DOES NOT RECEIVE VEHICLE SPEED SIGNAL (A/T)»(ref-169966-S36345636422004122800000) .

Set each switch to the following condition to check input signals from the windshield intermittent wiper interval adjusting knob

1. Ignition Switch ACC
2. Windshield Wiper Switch INT
3. Intermittent Wiper Adjusting Knob SLOW Side

1. Connect SWS monitor kit MB991862 to the column switch connector.
2. Operate scan tool MB991502 according to the procedure below to display "F.WIPER INT." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "WIPER." Select "F.WIPER INT."
3. Check that normal conditions are displayed on the items described. (Scheme 220)

Note. Also check that the wiper interval changes smoothly when the vehicle is accelerated from 0 km/h (0 mph) to 25 km/h (15.5 mph).

Does the value change within the normal range when the windshield intermittent wiper interval adjusting knob is rotated?

1. YES Replace the front-ECU. The windshield intermittent wiper interval should change according to the vehicle speed.
2. NO Replace the ETACS-ECU. The windshield intermittent wiper interval should change according to the vehicle speed.

Scheme 220

Scheme 221

Step 1: Verify The Windshield Wiper

Does the windshield wiper operate normally?

1. YES Go to step «2»(ref-169966-S29682253642004122800000) .
2. NO See «INSPECTION PROCEDURE F-1: SUNROOF: SUNROOF DOES NOT OPERATE»(ref-169966-S08144672832004122800000) .

Step 3: Check The Input Signal By Using "FUNCTION DIAG." Menu Of The SWS Monitor

Check the input signals from the following switches

1. Ignition Switch: ACC
2. Windshield Washer Switch ON

Operate scan tool MB991502 according to the procedure below to display "F.WIPER WASH."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "WIPER."
6. Select "F.WIPER WASH."

Check that normal conditions are displayed on the items described. (Scheme 222)

Are normal conditions displayed on the "FRONT WASH.SW" and "FRONT ECU ACK"?

1. YES Go to step «4»(ref-169966-S40263794532004122800000) .
2. NO Normal condition is not displayed on the "FRONT WASH.SW": Replace the column switch. Verify that the windshield washer works normally. Normal condition is not displayed on the "FRONT ECU ACK": Replace the front-ECU. Verify that the windshield washer works normally.

Scheme 222

Step 4: Check The Windshield Washer Motor

1. Disconnect windshield washer motor connector A-22 and measure the voltage available at the windshield washer motor side of the connector.
2. Fill the windshield washer tank with washer fluid.
3. When battery voltage is applied between terminals No. 1 and 2, washer fluid should gush out.

Does the windshield washer motor operate normally?

1. YES Go to Step «5»(ref-169966-S27955977472004122800000) .
2. NO Replace the windshield washer motor. Verify that the windshield washer works normally.

Step 5: Check The Ground Circuit To The Windshield Washer Motor

Test at windshield washer motor connector A-22.

1. Disconnect windshield washer motor connector A-22 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 223) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «8»(ref-169966-S24949737792004122800000) .
2. NO Go to step «6»(ref-169966-S22970843592004122800000) .

Scheme 223

Step 6: Check Windshield Washer Motor Connector A-22 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is windshield washer motor connector A-22 in good condition?

1. YES Go to step «7»(ref-169966-S38180850222004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the windshield washer works normally.

Step 8: Check Windshield Washer Motor Connector A-22 And Front-ECU Connector A-11X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are windshield washer motor connector A-22 and front- ECU connector A-11X in good condition?

1. YES Go to step «9»(ref-169966-S08565472192004122800000) .
2. NO Repair or replace the damaged component(s). Verify that the windshield washer works normally.

Check the input signals from the following switches

1. Ignition Switch ACC
2. Rear Wiper Switch: INT

Operate scan tool MB991502 according to the procedure below to display "REAR WIPER."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "REAR WIPER." Check that normal conditions are displayed. (Scheme 224)

Are normal conditions displayed on the "REAR WIPER SW" AND "IG SW (ACC)"?

1. YES Go to step 3
2. NO Normal condition is not displayed on the "REAR WIPER SW": See «INSPECTION PROCEDURE M-6: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH, WINDSHIELD WASHER SWITCH, REAR WIPER SWITCH OR REAR WASHER SWITCH»(ref-169966-S18094898912004122800000) . Normal conditions is not displayed on the "IG SW" (ACC): See «INSPECTION PROCEDURE M-1: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (ACC)»(ref-169966-S04257761492004122900000) .

Scheme 224

Step 3: Check The Rear Wiper Motor

1. Disconnect rear wiper motor connector F-05.
2. Connect the battery to the rear wiper motor, and check the rear wiper motor.

Does the rear wiper motor operate normally?

1. YES Go to step «4»(ref-169966-S17328703202004122900000) .
2. NO Replace the rear wiper motor. Verify that the rear wiper works normally.

Step 4: Check The Ground Circuit To The Rear Wiper Motor

Test at rear wiper motor connector F-05.

1. Disconnect rear wiper motor connector F-05 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 225) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «7»(ref-169966-S25279118622004122900000) .
2. NO Go to step «5»(ref-169966-S11132056832004122900000) .

Scheme 225

Step 5: Check Rear Wiper Motor Connector F-05 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear wiper motor connector F-05 in good condition?

1. YES Go to step «6»(ref-169966-S39439609592004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the rear wiper works normally.

Step 7: Check Rear Wiper Motor Connector F-05 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear wiper motor connector F-05 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «8»(ref-169966-S41830793962004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the rear wiper works normally.

Step 1: Verify The Rear Wiper

Does the rear wiper motor operate (however, the rear wiper does not stop at the predetermined park position)?

1. YES Go to step «2»(ref-169966-S37050526052004122900000) .
2. NO See «INSPECTION PROCEDURE H-1: REAR WIPER AND WASHER: REAR WIPER DOES NOT WORK AT ALL»(ref-169966-S37874581792004122800000) .

Step 2: Check The Rear Wiper Motor

1. Disconnect rear wiper motor connector F-05.
2. While the rear wiper motor is running, disconnect the battery to stop the motor.
3. When the battery is connected as shown, the motor should run again and stop at the predetermined park position.

Does the rear wiper motor operate normally?

1. YES Go to step «3»(ref-169966-S42462491172004122900000) .
2. NO Replace the rear wiper motor. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

Step 3: Check The Ignition Switch (ACC) Circuit To The Rear Wiper Motor

Test at rear wiper motor connector F-05.

1. Disconnect rear wiper motor connector F-05 and measure the voltage available at the harness side of the connector.
2. Turn the ignition switch to the "ACC" position.
3. Measure the voltage between terminal No. 4 and ground by backprobing. (Scheme 226) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «6»(ref-169966-S09307515982004122900000) .
2. NO Go to step «4»(ref-169966-S38658588942004122900000) .

Scheme 226

Step 4: Check Rear Wiper Motor Connector F-05 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear wiper motor connector F-05 in good condition?

1. YES Go to step «5»(ref-169966-S19169764942004122900000) .
2. NO Repair or replace the damaged component(s). If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

Step 6: Check Rear Wiper Motor Connector F-05 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear wiper motor connector F-05 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «7»(ref-169966-S32616181282004122900000) .
2. NO Repair or replace the damaged component(s). If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

Does the rear wiper operate?

1. YES Go to step «2»(ref-169966-S07241762542004122900000) .
2. NO See «INSPECTION PROCEDURE H-1: REAR WIPER AND WASHER: REAR WIPER DOES NOT WORK AT ALL»(ref-169966-S37874581792004122800000) .

Set each switch to the following condition before checking input signal from the Park/Neutral position switch ("R" position).

1. Ignition Switch ON
2. Rear Wiper Switch ON
3. Shift Position R Position

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "REV. INTERLOCK." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "REAR WIPER." Select "REV. INTERLOCK."
4. Check that normal conditions are displayed on the item. (Scheme 227)

Is normal condition displayed?

1. YES Replace the ETACS-ECU. When the selector lever is moved to the "R" position, the rear wiper should operate consecutively approximately twice.
2. NO See «INSPECTION PROCEDURE M-3: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE BACKUP LIGHT SWITCH (M/T)»(ref-169966-S36378434842004122900000) or «INSPECTION PROCEDURE M-3: ETACS-ECU DOES NOT RECEIVE "R" POSITION SIGNAL FROM THE PARK/NEUTRAL POSITION SWITCH (A/T)»(ref-169966-S21921002962004122900000) .

Scheme 227

Scheme 228

Does the rear wiper operate?

1. YES Go to step «2»(ref-169966-S02604209762004122900000) .
2. NO See «INSPECTION PROCEDURE H-1: REAR WIPER AND WASHER: REAR WIPER DOES NOT WORK AT ALL»(ref-169966-S37874581792004122800000) .

Set each switch to the following condition before checking input signals from the rear washer switch

1. Ignition Switch ACC
2. Rear Washer Switch ON

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "REAR WASHER." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "REAR WIPER." Select "REAR WASHER."
4. Check that normal conditions are displayed. (Scheme 229)

Is normal conditions displayed?

1. YES Go to step «3»(ref-169966-S29228594392004122900000) .
2. NO See «INSPECTION PROCEDURE M-6: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH, WINDSHIELD WASHER SWITCH, REAR WIPER SWITCH OR REAR WASHER SWITCH»(ref-169966-S18094898912004122800000) .

Scheme 229

Step 3: Check The Rear Washer Motor

1. Disconnect rear washer motor connector A-23.
2. Fill the washer tank with washer fluid.
3. When battery voltage is applied between terminals No. 1 and 2, washer fluid should gush out.

Does the rear washer motor operate normally?

1. YES Go to step «4»(ref-169966-S41605796372004122900000) .
2. NO Replace the rear washer motor. Verify that the rear washer works normally.

Step 4: Check The Ground Circuit To The Rear Washer Motor

Test at rear washer motor connector A-23.

1. Disconnect rear washer motor connector A-23 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 230) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «7»(ref-169966-S08514503362004122900000) .
2. NO Go to step «5»(ref-169966-S25392042962004122900000) .

Scheme 230

Step 5: Check Rear Washer Motor Connector A-23 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear washer motor connector A-23 in good condition?

1. YES Go to step «6»(ref-169966-S14571044932004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the rear washer works normally.

Step 7: Check Rear Washer Motor Connector A-23 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear washer motor connector A-23 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «8»(ref-169966-S10737028552004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the rear washer works normally.

Turn the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1). Operate scan tool MB991502 according to the procedure below to display "ETACS ECU."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."

Check that normal conditions are displayed. (Scheme 231)

Scheme 231

Is normal condition displayed "IG SW (IG1)"?

1. YES Go to step «3»(ref-169966-S20473369242004122900000) .
2. NO See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) .

Check input signal from the driver's side seat belt switch. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."

When the driver's seat belt is fastened, check if scan tool MB991502 sounds or not.

Does scan tool MB991502 sound when the driver's side seat belt is fastened?

1. YES Go to step «4»(ref-169966-S14865644252004122900000) .
2. NO See «INSPECTION PROCEDURE N-3: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S SEAT BELT SWITCH»(ref-169966-S08803254102004122700000) .

Step 4: Check At ETACS-ECU Connector C-228 In Order To Check The Ground Circuit To The Seat Belt Warning Light

1. Disconnect ETACS-ECU connector C-228, and measure at the wiring harness side.
2. Turn the ignition switch to the "ON" position.
3. Connect terminal No. 73 to ground.

Does the seat belt warning light illuminate?

1. YES Replace the ETACS-ECU. Verify that the seat belt warning light illuminates normally.
2. NO Go to step «5»(ref-169966-S26230432622004122900000) .

Step 5: Check The Seat Belt Warning Light Bulb

Is the seat belt warning light bulb in good condition?

1. YES Go to step «6»(ref-169966-S13058181602004122900000) .
2. NO Replace the bulb. Verify that the seat belt warning light illuminates normally.

Step 6: Check The Combination Meter (Printed-Circuit Board)

1. Remove the combination meter.
2. Remove the seat belt warning light bulb. Then measure the resistance value between the bulb terminals.
3. Install the bulb to the combination meter, and then measure the resistance value between connector C-01 (terminal No. 9) and connector C-02 (terminal No. 35). The measured resistance value should be roughly the same as the value measured in step «2»(ref-169966-S21128657402004122900000) .

Are these 2 resistance values extremely different?

1. YES Repair or replace the combination meter (printed circuit board). Verify that the seat belt warning light illuminates normally.
2. NO (Much The Same) Go to step «7»(ref-169966-S25840738482004122900000) .

Step 7: Check The Ignition Switch (IG1) Circuit To The Combination Meter

Test at combination meter connector C-01.

1. Disconnect combination meter connector C-01 and measure the voltage available at the harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 9 and ground. (Scheme 232) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «10»(ref-169966-S01542367522004122900000) .
2. NO Go to step «8»(ref-169966-S01042986442004122900000) .

Scheme 232

Step 8: Check Combination Meter Connector C-01 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is combination meter connector C-01 in good condition?

1. YES Go to step «9»(ref-169966-S16153370842004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the seat belt warning light illuminates normally.

Step 10: Check Combination Meter Connector C-02 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are combination meter connector C-02 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «11»(ref-169966-S10633816322004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the seat belt warning light illuminates normally.

Check the input signals from the following switches

1. Ignition Switch ON
2. Lighting Switch TAIL

Note. Turn the ignition switch to the "ON" position in order to disable the headlight automatic shutdown function.

Operate scan tool MB991502 according to the procedure below to display "TAILLIGHT."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "LIGHTING."
6. Select "TAILLIGHT."

Check that normal conditions are displayed on the items described. (Scheme 233)

Are normal conditions displayed on the "TAILLIGHT SW", "H/L AUTO-CUT" and "FRONT ECU ACK"?

1. YES Go to step «3»(ref-169966-S22505667392004122900000) .
2. NO Normal condition is not displayed on the "TAIL LIGHT SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "H/L AUTO-CUT": See «INSPECTION PROCEDURE J-9: HEADLIGHT AND TAILLIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-169966-S25580237892004122700000) . Normal condition is not displayed on the "FRONT ECU ACK": Replace the front-ECU. Verify that the taillights illuminate normally.

Scheme 233

Step 3: Check The Battery Power Supply Circuit To The Front-ECU

Test at front-ECU connector A-10X.

1. Disconnect front-ECU connector A-10X and measure the voltage available at the relay box side of the connector.
2. Measure the voltage between terminal No. 5 and ground. (Scheme 234) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the front-ECU. Verify that the taillights illuminate normally.
2. NO Go to step «4»(ref-169966-S22406711052004122900000) .

Scheme 234

Step 4: Check The Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the front-ECU connector A-10X in good condition?

1. YES Go to step «5»(ref-169966-S24078417992004122900000) .
2. NO Repair or replace the damaged component(s). Verify that the taillights illuminate normally.

Check the input signals from the following switches

1. Ignition switch: ON
2. Lighting switch: HEAD

Operate scan tool MB991502 according to the procedure below to display "HEADLIGHT LO."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "LIGHTING."
6. 6. Select "HEADLIGHT LO."

Check that normal conditions are displayed on the items described. See. (Scheme 235)

Are normal conditions displayed on the "HEADLIGHT SW", "H/L AUTO-CUT" and "FRONT ECU ACK"?

1. YES Go to step «3»(ref-169966-S28933417382005010300000) .
2. NO Normal condition is not displayed on the "HEADLIGHT SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "H/L AUTO-CUT": See «INSPECTION PROCEDURE J-9: HEADLIGHT AND TAILLIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-169966-S25580237892004122700000) . Normal condition is not displayed on the "FRONT ECU ACK": Replace the front-ECU. Verify that the headlights (low-beam) illuminate normally.

Scheme 235

Test at front-ECU connector A-10X.

1. Disconnect front-ECU connector A-10X and measure the voltage available at the relay box side of the connector.
2. Measure the voltage between terminal No. 3 and ground. (Scheme 236) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the front-ECU. Verify that the headlights (low-beam) illuminate normally.
2. NO Go to step «4»(ref-169966-S09225977442005010300000) .

Scheme 236

Is the front-ECU connector A-10X in good condition?

1. YES Go to step «5»(ref-169966-S26588298162005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights (low-beam) illuminate normally.

Check the input signals from the following switches

1. Ignition switch: ON
2. Lighting switch: HEAD
3. Dimmer switch: ON

Operate scan tool MB991502 according to the procedure below to display "HEADLIGHT HI."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "LIGHTING."
6. Select "HEADLIGHT HI."

Check that normal conditions are displayed on the items described. (Scheme 237)

Are normal conditions displayed on the "HEADLIGHT SW", "DIMMER SW", "H/L AUTO-CUT" and "FRONT ECU ACK"?

1. YES Replace the front-ECU. Verify that the headlights (high-beam) illuminate normally.
2. NO Normal condition is not displayed on the "HEADLIGHT SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "DIMMER SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "H/L AUTO-CUT": See . «INSPECTION PROCEDURE J-9: HEADLIGHT AND TAILLIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-169966-S25580237892004122700000) Normal condition is not displayed on the "FRONT ECU ACK": Replace the front-ECU. Verify that the headlights (high-beam) illuminate normally.

Scheme 237

Step 1: Verify The Headlights

Do the headlights (low-beam and high-beam) illuminate normally?

1. YES Go to step «2»(ref-169966-S42402288112005010300000) .
2. Headlights (Low-Beam) Do Not Illuminate Normally See «INSPECTION PROCEDURE J-2: HEADLIGHT AND TAILLIGHT: HEADLIGHTS (LOW-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-169966-S20289579902005010300000) .
3. Headlights (High-Beam) Do Not Illuminate Normally See «INSPECTION PROCEDURE J-3: HEADLIGHT AND TAILLIGHT: HEADLIGHTS (HIGH-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-169966-S29037616772005010300000) .

Turn the passing switch to the "ON" position before checking input signals from the passing switch.

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "COLUMN ECU." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "DATA LIST." Select "COLUMN ECU."
4. Check that normal conditions are displayed on the items described. (Scheme 238)

Is normal condition displayed on the "PASSING SW"?

1. YES Replace the front-ECU. When the passing switch is turned "ON", the headlights (low-beam and high-beam) should illuminate normally.
2. NO See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH.»(ref-169966-S23597785162004122700000) .

Scheme 238

Step 2: Check Taillight (LH) Connector F-14 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are taillight (LH) connector F-14 and front-ECU connector A-10X in good condition?

1. YES Go to step «3»(ref-169966-S07403432722005010300000) .
2. NO Repair or replace the damaged component(s). The taillight (LH) and the license plate lights should illuminate normally.

Step 4: Check Position Light (RH) Connector A-24 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are position light (RH) connector A-24 and front-ECU connector A-10X in good condition?

1. YES Go to step «5»(ref-169966-S23385071122005010300000) .
2. NO Repair or replace the damaged component(s). The position light (RH) and the taillight (RH) should illuminate normally.

Step 6: Check The Position Light Bulb (LH)

1. Remove the position light bulb (LH).
2. Verify that the position light bulb (LH) is not damaged or burned out.

Is the position light bulb (LH) in good condition?

1. YES Go to step «7»(ref-169966-S14152723452005010300000) .
2. NO Replace the position light bulb (LH). Verify that the position light (LH) illuminates normally.

Step 7: Check The Ground Circuit To The Position Light (LH)

1. Disconnect position light (LH) connector A-14 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 239) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «10»(ref-169966-S29750283272005010300000) .
2. NO Go to step «8»(ref-169966-S21248602912005010300000) .

Scheme 239

Step 8: Check Position Light (LH) Connector A-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is position light (LH) connector A-14 in good condition?

1. YES Go to step «9»(ref-169966-S12823314152005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the position light (LH) illuminates normally.

Step 10: Check Position Light (LH) Connector A-14 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are position light (LH) connector A-14 and front-ECU connector A-10X in good condition?

1. YES Go to step «11»(ref-169966-S21721970972005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the position light (LH) illuminates normally.

Step 12: Check The Position Light Bulb (RH)

1. Remove the position light bulb (RH).
2. Verify that the position light bulb (RH) is not damaged or burned out.

Is the position light bulb (RH) in good condition?

1. YES Go to step «13»(ref-169966-S23754434752005010300000) .
2. NO Replace the position light bulb (RH). Verify that the position light (RH) illuminates normally.

Step 13: Check The Ground Circuit To The Position Light (LH)

Test at position light (LH) connector A-24.

1. Disconnect position light (LH) connector A-24 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 240) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «16»(ref-169966-S39547760172005010300000) .
2. NO Go to step «14»(ref-169966-S08092688642005010300000) .

Scheme 240

Step 14: Check Position Light (RH) Connector A-24 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is position light (RH) connector A-24 in good condition?

1. YES Go to step «15»(ref-169966-S31355802722005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the position light (RH) illuminates normally.

Step 16: Check Position Light (RH) Connector A-24 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are position light (RH) connector A-24 and front-ECU connector A-10X in good condition?

1. YES Go to step «17»(ref-169966-S10509090392005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the position light (RH) illuminates normally.

Step 18: Check The Stop/Taillight Bulb (LH)

1. (1) Remove the stop/taillight bulb (LH).
2. (2) Verify that the stop/taillight bulb (LH) is not damaged or burned out.

Is the stop/taillight bulb (LH) in good condition?

1. YES Go to step «19»(ref-169966-S12804401892005010300000) .
2. NO Replace the stop/taillight bulb (LH). Verify that the taillights (LH) illuminate normally.

Step 19: Check The Ground Circuit To The Rear Combination Light (LH)

Test at rear combination light (LH) connector F- 14.

1. Disconnect rear combination light (LH) connector F-14 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 5 and ground. (Scheme 241) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «22»(ref-169966-S29931218322005010300000) .
2. NO Go to step «20»(ref-169966-S15263449082005010300000) .

Scheme 241

Step 20: Check Rear Combination Light (LH) Connector F-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear combination light (LH) connector F-14 in good condition?

1. YES Go to step «21»(ref-169966-S05114642482005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the taillights (LH) illuminate normally.

Step 22: Check Rear Combination Light (LH) Connector F-14 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear combination light (LH) connector F-14 and front-ECU connector A-10X in good condition?

1. YES Go to step «23»(ref-169966-S26103855632005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the taillights (LH) illuminate normally.

Step 24: Check The Stop/Taillight Bulb (RH)

1. Remove the stop/taillight bulb (RH).
2. Verify that the stop/taillight bulb (RH) is not damaged or burned out.

Is the stop/taillight bulb (RH) in good condition?

1. YES Go to step «25»(ref-169966-S08800836852005010300000) .
2. NO Replace the stop/taillight bulb (RH). Verify that the taillight (RH) illuminates normally.

Step 25: Check The Ground Circuit To The Rear Combination Light (RH)

Test at rear combination light (RH) connector F-08.

1. Disconnect front combination light (RH) connector F-08 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 5 and ground. (Scheme 242) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «28»(ref-169966-S15609907302005010300000) .
2. NO Go to step «26»(ref-169966-S07853466522005010300000)

Scheme 242

Step 26: Check Rear Combination Light (RH) Connector F- 08 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear combination light (RH) connector F-08 in good condition?

1. YES Go to step «27»(ref-169966-S09221112652005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the taillight (RH) illuminates normally.

Step 28: Check Rear Combination Light (RH) Connector F-08 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear combination light (RH) connector F-08 and front-ECU connector A-10X in good condition?

1. YES Go to step «29»(ref-169966-S19761933542005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the taillight (RH) illuminates normally.

Step 30: Check The Ground Circuit To The License Plate Light (LH)

Test at license plate light (LH) connector F-11.

1. Disconnect license plate light (LH) connector F-11 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 243) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «33»(ref-169966-S30918611892005010300000) .
2. NO Go to step «31»(ref-169966-S15556992662005010300000) .

Scheme 243

Step 31: Check License Plate Light (LH) Connector F-11 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is license plate light (LH) connector F-11 in good condition?

1. YES Go to step «32»(ref-169966-S34764492272005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the license plate lights illuminate normally.

Step 33: Check License Plate Light (LH) Connector F-11 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are license plate light (LH) connector F-11 and front- ECU connector A-10X in good condition?

1. YES Go to step «34»(ref-169966-S33981565122005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the license plate lights illuminate normally.

Step 35: Check The License Plate Light Bulb (LH)

1. Remove the license plate light bulb (LH).
2. Verify that the license plate light bulb (LH) is not damaged or burned out.

Is the license plate light bulb (LH) in good condition?

1. YES Go to step «36»(ref-169966-S23981152282005010300000) .
2. NO Replace the license plate light bulb (LH). Verify that the license plate lights illuminate normally.

Step 36: Check The Ground Circuit To The License Plate Light (LH)

Test at license plate light (LH) connector F-11.

1. Disconnect license plate light (LH) connector F-11 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 244) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «39»(ref-169966-S08188417142005010300000) .
2. NO Go to step «37»(ref-169966-S05401890592005010300000) .

Scheme 244

Step 37: Check License Plate Light (LH) Connector F-11 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is license plate light (LH) connector F-11 in good condition?

1. YES Go to step «38»(ref-169966-S09868304472005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the license plate lights (LH) illuminate normally.

Step 39: Check License Plate Light (LH) Connector F-11 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are license plate light (LH) connector F-11 and front-ECU connector A-10X in good condition?

1. YES Go to step «40»(ref-169966-S15859055022005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the license plate lights (LH) illuminate normally.

Step 41: Check The License Plate Light Bulb (RH)

1. Remove the license plate light bulb (RH).
2. Verify that the license plate light bulb (RH) is not damaged or burned out.

Is the license plate light bulb (RH) in good condition?

1. YES Go to step «42»(ref-169966-S06116193292005010300000) .
2. NO Replace the license plate light bulb (RH). Verify that the license plate lights illuminate normally.

Step 42: Check The Ground Circuit To The License Plate Light (RH)

Test at license plate light (RH) connector F-10.

1. Disconnect license plate light (RH) connector F-10 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 245) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «45»(ref-169966-S02194170832005010300000) .
2. NO Go to step «43»(ref-169966-S18550136482005010300000) .

Scheme 245

Step 43: Check License Plate Light (RH) Connector F-10 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is license plate light (RH) connector F-10 in good condition?

1. YES Go to step «44»(ref-169966-S32167600642005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the license plate lights (RH) illuminate normally.

Step 45: Check License Plate Light (RH) Connector F-10 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are license plate light (RH) connector F-10 and front-ECU connector A-10X in good condition?

1. YES Go to step «46»(ref-169966-S37712768562005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the license plate lights (RH) illuminate normally.

Step 47: Check Position Light (LH) Connector A-14 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are position light (LH) connector A-14 and front-ECU connector A-10X in good condition?

1. YES Go to step «48»(ref-169966-S32300882182005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the position light (LH), taillight (LH), license plate light illuminates normally.

Step 2: Check Headlight (LH) Bulb

1. Remove the headlight (LH) bulb.
2. Verify that the headlight (LH) bulb is not damaged or burned out.

Is headlight (LH) bulb normal?

1. YES Go to step «3»(ref-169966-S01721472822005010300000) .
2. NO Replace the headlight (LH) bulb. Verify that the headlights illuminate normally.

Step 3: Check Headlight (LH) Connector A-15 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is headlight (LH) connector A-15 in good condition?

1. YES Go to step «4»(ref-169966-S35800491292005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights illuminate normally.

Step 5: Check Headlight (RH) Bulb

1. Remove the headlight (RH) bulb.
2. Verify that the headlight (RH) bulb is not damaged or burned out.

Is headlight (RH) bulb normal?

1. YES Go to step «6»(ref-169966-S05040530522005010300000) .
2. NO Replace the headlight (RH) bulb. Verify that the headlights illuminate normally.

Step 6: Check Headlight (RH) Connector A-21 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is headlight (RH) connector A-21 in good condition?

1. YES Go to step «7»(ref-169966-S10283746862005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights illuminate normally.

Step 8: Check Headlight (LH) Bulb

1. Remove the headlight (LH) bulb.
2. Verify that the headlight (LH) bulb is not damaged or burned out.

Is headlight (LH) bulb normal?

1. YES Go to step «9»(ref-169966-S29670306672005010300000) .
2. NO Replace the headlight (LH) bulb. Verify that the headlights illuminate normally.

Step 9: Check Headlight (LH) Connector A-15 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are headlight (LH) connector A-15 and front-ECU connector A-10X in good condition?

1. YES Go to step «10»(ref-169966-S12621455942005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights illuminate normally.

Step 11: Check Headlight (RH) Bulb

1. Remove the headlight (RH) bulb.
2. Verify that the headlight (RH) bulb is not damaged or burned out.

Is headlight (RH) bulb normal?

1. YES Go to step «12»(ref-169966-S33678443192005010300000) .
2. NO Replace the headlight (RH) bulb. Verify that the headlights illuminate normally.

Step 12: Check Headlight (RH) Connector A-21 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are headlight (RH) connector A-21 and front-ECU connector A-10X in good condition?

1. YES Go to step «13»(ref-169966-S33830834862005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights illuminate normally.

Step 14: Check Headlight (LH) Bulb

1. Remove the headlight (LH) bulb.
2. Verify that the headlight (LH) bulb is not damaged or burned out.

Is headlight (LH) bulb normal?

1. YES Go to step «15»(ref-169966-S35081575882005010300000) .
2. NO Replace the headlight (LH) bulb. Verify that the headlights illuminate normally.

Step 15: Check Headlight (LH) Connector A-15 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are headlight (LH) connector A-15 and front-ECU connector A-10X in good condition?

1. YES Go to step «16»(ref-169966-S39291789382005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights illuminate normally

Step 17: Check Headlight (RH) Bulb

1. Remove the headlight (RH) bulb.
2. Verify that the headlight (RH) bulb is not damaged or burned out.

Is headlight (RH) bulb normal?

1. YES Go to step «18»(ref-169966-S31594553752005010300000) .
2. NO Replace the headlight (RH) bulb. Verify that the headlights illuminate normally.

Step 18: Check Headlight (RH) Connector A-21 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are headlight (RH) connector A-21 and front-ECU connector A-10X in good condition?

1. YES Go to step «19»(ref-169966-S12338507742005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the headlights illuminate normally.

Step 2: Check At ETACS-ECU Connector C-228 In Order To Check The High-Beam Indicator Light Circuit

1. Disconnect ETACS-ECU connector C-228, and measure at the wiring harness side.
2. Turn the ignition switch to the "ON" position.
3. Connect terminal No. 72 to ground.

Does the high-beam indicator light illuminate?

1. YES Replace the ETACS-ECU. Verify that the high-beam indicator light illuminates normally.
2. NO Go to step «3»(ref-169966-S09446340422005010300000) .

Step 3: Check High-Beam Indicator Light Bulb

1. Remove the high-beam indicator light bulb.
2. Verify that the high-beam indicator light bulb is not damaged or burned out.

Is the high-beam indicator light normal?

1. YES Go to step «4»(ref-169966-S24052283752005010300000) .
2. NO Replace the bulb. Verify that the high-beam indicator light illuminates normally.

Step 4: Check The Combination Meter (Printed-Circuit Board)

1. Remove the combination meter.
2. Remove the high-beam indicator light bulb. Then measure the resistance value between the bulb terminals.
3. Install the bulb to the combination meter, and then measure the resistance value between connector C-01 terminals No. 4 and 5. The measured resistance value should be roughly the same as the value measured in Step «2»(ref-169966-S37688036702005010300000) .

Are these 2 resistance values extremely different?

1. YES Repair or replace the combination meter (printed circuit board). Verify that the headlight-beam indicator light illuminates normally.
2. NO (Roughly The Same) Go to step «5»(ref-169966-S12132417812005010300000) .

Step 5: Check The Battery Power Supply Circuit To The Combination Meter

Test at combination meter connector C-01.

1. Disconnect combination meter connector C-01 and measure the voltage available at the wiring component side of the connector.
2. Measure the voltage between terminal No. 4 and ground. (Scheme 246) The measured value should be 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «8»(ref-169966-S26999529112005010300000) .
2. NO Go to step «6»(ref-169966-S04753900552005010300000) .

Scheme 246

Step 6: Check Combination Meter Connector C-01 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is combination meter connector C-01 in good condition?

1. YES Go to step «7»(ref-169966-S31298803792005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the high-beam indicator light illuminates normally.

Step 8: Check Combination Meter Connector C-01 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are combination meter connector C-01 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «9»(ref-169966-S17537259802005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the high-beam indicator light illuminates normally.

Step 1: Verify The Configuration Function

Has the headlight automatic shutdown function been enabled by means of the adjustment function?

1. YES Go to step «2»(ref-169966-S07275638252005010300000) .
2. NO Enable the headlight automatic shutdown function been by means of the adjustment function. See «FUNCTION SYSTEM SYMPTOM CHART»(ref-169966-S38419175652004122200000) table.

Check the input signals from the following switches

1. Ignition switch: "ON" to "OFF"
2. Lighting switch: "TAIL" or "HEAD"

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "H/L AUTO-CUT." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "LIGHTING." Select "H/L AUTO-CUT."
4. Check that normal conditions are displayed on the items described. (Scheme 247)
5. When the driver's door is opened, check that normal conditions are displayed on the items described. (Scheme 248)

Are normal conditions displayed on the "TAILLIGHT SW", "IG SW (IG1)", "FRONT DOOR SW" and "H/L AUTO-CUT"?

1. YES Replace the front-ECU. Verify that the headlight automatic shutdown function now works normally.
2. NO Normal condition is not displayed on the "TAIL LIGHT SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "FRONT DOOR SW": See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) . Normal condition is not displayed on the "H/L AUTO-CUT": Replace the front-ECU. Verify that the headlight automatic shutdown function now works normally.

Scheme 247

Scheme 248

Scheme 249

Step 2: Check The Battery Power Supply Circuit To The Daytime Running Light-ECU

Test at daytime running light-ECU connector A-28.

1. Disconnect daytime running light-ECU connector A-28 and measure the voltage available at the wiring harness side of the connector.
2. Measure the voltage between terminal No. 1 and ground. (Scheme 250) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «5»(ref-169966-S29848517062005010300000) .
2. NO Go to step «3»(ref-169966-S04983827832005010300000) .

Scheme 250

Step 3: Check Daytime Running Light-ECU Connector A-28 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the daytime running light-ECU connector A-28 in good condition?

1. YES Go to step «4»(ref-169966-S36540066912005010300000) .
2. NO Repair or replace the damaged component(s). The daytime running light function should now work normally.

Step 5: Check The Ground Circuit To The Daytime Running Light-ECU

Test at daytime running light-ECU connector A-28.

1. Disconnect daytime running light-ECU connector A-28 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 6 and ground. (Scheme 251) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «8»(ref-169966-S24507954842005010300000) .
2. NO Go to step «6»(ref-169966-S09754298512005010300000) .

Scheme 251

Step 6: Check Daytime Running Light-ECU Connector A-28 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the daytime running light-ECU connector A-28 in good condition?

1. YES Go to step «7»(ref-169966-S36273007602005010300000) .
2. NO Repair or replace the damaged component(s). The daytime running light function should now work normally.

Step 8: Check The Ignition Switch (IG2) Line Of The Power Supply Circuit To The Daytime Running Light-ECU

Test at daytime running light-ECU connector A-28.

1. Disconnect daytime running light-ECU connector A-28 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 2 and ground. (Scheme 252) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «11»(ref-169966-S24796260312005010300000) .
2. NO Go to step «9»(ref-169966-S29653360132005010300000) .

Scheme 252

Step 9: Check Daytime Running Light-ECU Connector A-28 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the daytime running light-ECU connector A-28 in good condition?

1. YES Go to step «10»(ref-169966-S08427373902005010300000) .
2. NO Repair or replace the damaged component(s). The daytime running light function should now work normally.

Step 11: Check Daytime Running Light-ECU Connector A-28 And Headlight (LH) Connector A-15 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the daytime running light-ECU connector A-28 and headlight connector A-15 in good condition?

1. YES Go to step «12»(ref-169966-S02585234052005010300000) .
2. NO Repair or replace the damaged component(s). The daytime running light function should now work normally.

Step 1: Check The Headlight Relay (Low) Circuit To The Daytime Running Light-ECU

Test at daytime running light- ECU connector A-28.

1. Disconnect daytime running light-ECU connector A-28 and measure the voltage available at the wiring harness side of the connector.
2. Turn the headlight switch to "ON" position.
3. Measure the voltage between terminal No. 5 and ground. (Scheme 253) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the daytime running light-ECU. The daytime running light function should now work normally.
2. NO Go to step «2»(ref-169966-S14729745192005010300000) .

Scheme 253

Step 2: Check Daytime Running Light-ECU Connector A-28 And Front-ECU Connector A-10X For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the daytime running light-ECU connector A-28 and front-ECU connector A-10X in good condition?

1. YES Go to step «3»(ref-169966-S17897474092005010300000) .
2. NO Repair or replace the damaged component(s). The daytime running light function should now work normally.

Step 1: Verify The Hazard Warning Light

Does the hazard warning light work normally?

1. YES Go to step «7»(ref-169966-S10105972252005010300000) .
2. NO Go to step «2»(ref-169966-S18126549782005010300000) .

Step 2: Verify The Turn-Signal Lights

Does either of the turn-signal lights illuminate?

1. YES (Illuminates At Only One Side) Go to step «3»(ref-169966-S19428070712005010300000) .
2. NO (Do Not Illuminate At All) Go to step «4»(ref-169966-S00950980122005010300000) .

Step 3: Check ETACS-ECU Connector C-226, Junction Block Connectors C-210, C-214 And C-217 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-226, junction block connectors C-210, C-214 and C-217 in good condition?

1. YES Replace the ETACS-ECU. Verify that the turn-signal lights illuminate normally.
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 4: Check The Battery Power Supply Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Measure the voltage between terminal No. 11 and ground. (Scheme 254) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the ETACS-ECU. Verify that the turn-signal lights illuminate normally.
2. NO Go to step «5»(ref-169966-S30968521392005010300000) .

Scheme 254

Step 5: Check ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «6»(ref-169966-S01077018642005010300000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 7: Check The Input Signal By Using "FUNCTION DIAG." Menu Of The SWS Monitor

Check the input signals from the following switches

1. Ignition switch: ON
2. Turn-signal light switch: RH

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "TURN SIG.RH." Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "FUNCTION DIAG." Select "TURN SIGNAL." Select "TURN SIG.RH."
4. Check that normal conditions are displayed on the items described. (Scheme 255)

Are normal conditions displayed on the "T/S RH SW" and "IG SW (IG1)"?

1. YES Go to step «8»(ref-169966-S38182319802005010400000) .
2. NO Normal condition is not displayed on the "T/S RH SW": See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-169966-S23597785162004122700000) . Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) .

Scheme 255

Step 8: Check The Input Signal By Using "FUNCTION DIAG." Menu Of The SWS Monitor

Check the input signal from the turn-signal light switch (LH). Operate scan tool MB991502 according to the procedure below to display "TURN SIG.LH."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "TURN SIGNAL."
6. Select "TURN SIG.LH."

Check that normal condition is displayed on the item described. (Scheme 256)

Do the scan tool display the items "T/S LH SW" is normal condition?

1. YES Replace the ETACS-ECU. Verify that the turn-signal lights illuminate normally.
2. NO See «INSPECTION PROCEDURE M-5: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-169966-S23597785162004122700000) .

Scheme 256

Scheme 257

Step 1: Verify The Turn-Signal Lights

Do the turn-signal lights illuminate normally?

1. YES Go to step «2»(ref-169966-S27429490002005010400000) .
2. NO See «INSPECTION PROCEDURE K-1: FLASHER TIMER: TURN-SIGNAL LIGHTS DOES NOT FLASH WHEN THE TURN-SIGNAL LIGHT SWITCH IS TURNED ON»(ref-169966-S16517473732005010300000) .

Check input signal from the hazard warning light switch.

1. Connect scan tool MB991502 to the data link connector.
2. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK." Select "SYSTEM SELECT." Select "SWS." Select "PULSE CHECK."
3. Check that scan tool MB991502 sounds when the hazard warning light switch is turned from "OFF" to "ON."

Does scan tool MB991502 sound when the hazard warning light switch is turned from "OFF" to "ON"?

1. YES Replace the ETACS-ECU. Verify that the hazard warning lights illuminate normally.
2. NO See «INSPECTION PROCEDURE N-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE HAZARD WARNING LIGHT SWITCH»(ref-169966-S04640973022004122800000) .

Scheme 258

Scheme 259

Step 1: Check The Hazard Warning Light

Which turn-signal light does not illuminate?

1. Front Turn-Signal Light (LH) And Side Turn-Signal Light (LH) Go to step «2»(ref-169966-S17993802452005010400000) .
2. Front Turn-Signal Light (RH) And Side Turn-Signal Light (RH) Go to step «4»(ref-169966-S30247652062005010400000) .
3. Front Turn-Signal Light (LH) Go to step «6»(ref-169966-S03875630052005010400000) .
4. Front Turn-Signal Light (RH) Go to step «12»(ref-169966-S16109963942005010400000) .
5. Side Turn-Signal Light (LH) Go to step «18»(ref-169966-S13250877692005010400000) .
6. Side Turn-Signal Light (RH) Go to step «24»(ref-169966-S39779562552005010400000) .
7. Rear Combination Light (LH) Go to step «30»(ref-169966-S20541144602005010400000) .
8. Rear Combination Light (RH) Go to step «36»(ref-169966-S04114014142005010400000) .
9. Combination Meter (LH) Go to step «42»(ref-169966-S00615284462005010400000) .
10. Combination Meter (RH) Go to step «44»(ref-169966-S23938041492005010400000) .
11. Combination Meter (Both Right And Left) Go to step «46»(ref-169966-S06338834392005010400000) .
12. Front Turn-Signal Light (RH), Side Turn-Signal Light (RH) And Rear Combination Light (RH) Go to step «48»(ref-169966-S06342992612005010400000) .
13. LH Side Only See «INSPECTION PROCEDURE K-1: FLASHER TIMER: TURN-SIGNAL LIGHTS DOES NOT FLASH WHEN THE TURN-SIGNAL LIGHT SWITCH IS TURNED ON»(ref-169966-S16517473732005010300000) .
14. RH Side Only See «INSPECTION PROCEDURE K-1: FLASHER TIMER: TURN-SIGNAL LIGHTS DOES NOT FLASH WHEN THE TURN-SIGNAL LIGHT SWITCH IS TURNED ON»(ref-169966-S16517473732005010300000) .
15. Both LH and RH sides See «INSPECTION PROCEDURE K-2: FLASHER TIMER: HAZARD WARNING LIGHTS DO NOT FLASH WHEN THE HAZARD WARNING LIGHT SWITCH IS TURNED ON»(ref-169966-S11015366102005010400000) .

Step 2: Check Front Turn-Signal Light (LH) Connector A-16 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front turn-signal light (LH) connector A-16 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «3»(ref-169966-S16838661732005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 4: Check Front Turn-Signal Light (RH) Connector A-20 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front turn-signal light (RH) connector A-20 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «5»(ref-169966-S15248359562005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 6: Check The Front Turn-Signal Light Bulb (LH)

1. Remove the front turn-signal (LH) light bulb.
2. Verify that the front turn-signal light bulb (LH) is not damaged or burned out.

Is the front turn-signal (LH) light bulb in good condition?

1. YES Go to step «7»(ref-169966-S06009300112005010400000) .
2. NO Replace the front turn-signal (LH) light bulb. Verify that the turn-signal lights illuminate normally.

Step 7: Check The Ground Circuit To The Front Turn Signal Light (LH)

Test at front turn-signal light (LH) connector A-16.

1. Disconnect front turn-signal light (LH) connector A-16 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 260) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «10»(ref-169966-S09753335732005010400000) .
2. NO Go to step «8»(ref-169966-S03875499022005010400000) .

Scheme 260

Step 8: Check Front Turn-Signal Light (LH) Connector A-16 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the front turn-signal (LH) connector A-16 in good condition?

1. YES Go to step «9»(ref-169966-S10146612892005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 10: Check Front Turn-Signal Light (LH) Connector A-16 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front turn-signal light (LH) connector A-16 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «11»(ref-169966-S10742191432005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 12: Check The Front Turn-Signal Light Bulb (RH)

1. Remove the front turn-signal (RH) light bulb.
2. Verify that the front turn-signal light bulb (RH) is not damaged or burned out.

Is the front turn-signal (RH) light bulb in good condition?

1. YES Go to step «13»(ref-169966-S04180512012005010400000) .
2. NO Replace the front turn-signal (RH) light bulb. Verify that the turn-signal lights illuminate normally.

Step 13: Check The Ground Circuit To The Front Turn-Signal Light (RH)

Test at front turn-signal light (RH) connector A- 20.

1. Disconnect front turn-signal light (RH) connector A-20 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 261) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «16»(ref-169966-S18670374722005010400000) .
2. NO Go to step «14»(ref-169966-S09587612402005010400000)

Scheme 261

Step 14: Check Front Turn-Signal Light (RH) Connector A-20 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the front turn-signal (RH) connector A-20 in good condition?

1. YES Go to step «15»(ref-169966-S34964956072005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 16: Check Front Turn-Signal Light (RH) Connector A-20 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front turn-signal light (RH) connector A-20 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «17»(ref-169966-S26259134402005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 18: Check The Side Turn-Signal Light Bulb (LH)

1. Remove the side turn-signal light (LH) bulb.
2. Verify that the side turn-signal light bulb (LH) is not damaged or burned out.

Is the side turn-signal light (LH) bulb in good condition?

1. YES Go to step «19»(ref-169966-S13122776882005010400000) .
2. NO Replace the side turn-signal light (LH) bulb. Verify that the turn-signal lights illuminate normally.

Step 19: Check The Ground Circuit To The Side Turn-Signal Light (LH)

Test at side turn-signal light (LH) connector A-02.

1. Disconnect side turn-signal light (LH) connector A-02 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 262) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «22»(ref-169966-S20823900792005010400000) .
2. NO Go to step «20»(ref-169966-S25800086932005010400000) .

Scheme 262

Step 20: Check Side Turn-Signal Light (LH) Connector A-02 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the side turn-signal light (LH) connector A-02 in good condition?

1. YES Go to step «21»(ref-169966-S11804826182005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 22: Check Side Turn-Signal Light (LH) Connector A-02 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are side turn-signal light (LH) connector A-02 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «23»(ref-169966-S40063482992005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 24: Check The Side Turn-Signal Light Bulb (RH)

1. Remove the side turn-signal light (RH) bulb.
2. Verify that the side turn-signal light bulb (RH) is not damaged or burned out.

Is the side turn-signal light (RH) bulb in good condition?

1. YES Go to step «25»(ref-169966-S41672874142005010400000) .
2. NO Replace the side turn-signal light (RH) bulb. Verify that the turn-signal lights illuminate normally.

Step 25: Check The Ground Circuit To The Side Turn-Signal Light (RH)

Test at side turn-signal light (RH) connector A-01.

1. Disconnect side turn-signal light (RH) connector A-01 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 263) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «28»(ref-169966-S22488622772005010400000) .
2. NO Go to step «26»(ref-169966-S34444475102005010400000) .

Scheme 263

Step 26: Check Side Turn-Signal Light (RH) Connector A-01 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the side turn-signal light (RH) connector A-01 in good condition?

1. YES Go to step «27»(ref-169966-S23705850252005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 28: Check Side Turn-Signal Light (RH) Connector A-01 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are side turn-signal light (RH) connector A-01 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «29»(ref-169966-S07965097742005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 30: Check The Rear Turn-Signal Light Bulb (LH)

1. Remove the rear turn-signal (LH) light bulb.
2. Verify that the rear turn-signal light bulb (LH) is not damaged or burned out.

Is the rear turn-signal (LH) light bulb in good condition?

1. YES Go to step «31»(ref-169966-S35748029972005010400000) .
2. NO Replace the rear turn-signal (LH) light bulb. Verify that the turn-signal lights illuminate normally.

Step 31: Check The Ground Circuit To The Rear Turn-Signal Light (LH)

Test at rear combination light (LH) connector F-14.

1. Disconnect rear combination light (LH) connector F-14 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 5 and ground. (Scheme 264) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «34»(ref-169966-S16600171322005010400000) .
2. NO Go to step «32»(ref-169966-S30004432182005010400000) .

Scheme 264

Step 32: Check Rear Combination Light (LH) Connector F-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear combination light (LH) connector F-14 in good condition?

1. YES Go to step «33»(ref-169966-S05124637882005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 34: Check Rear Combination Light (LH) Connector F-14 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear combination light (LH) connector F-14 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «35»(ref-169966-S07571253612005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 36: Check The Rear Turn-Signal Light Bulb (RH)

1. Remove the rear turn-signal light bulb (RH).
2. Verify that the rear turn-signal light bulb (RH) is not damaged or burned out.

Is the rear turn-signal light bulb (RH) in good condition?

1. YES Go to step «37»(ref-169966-S35853010922005010400000) .
2. NO Replace the rear turn-signal (RH) light bulb. Verify that the turn-signal lights illuminate normally.

Step 37: Check The Ground Circuit To The Rear Turn-Signal Light (RH)

Test at rear combination light (RH) connector F- 08.

1. Disconnect rear combination light (LH) connector F-08 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 5 and ground. (Scheme 265) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «40»(ref-169966-S33659212902005010400000) .
2. NO Go to step «38»(ref-169966-S12246971752005010400000) .

Scheme 265

Step 38: Check Rear Combination Light (RH) Connector F-08 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is rear combination light (RH) connector F-08 in good condition?

1. YES Go to step «39»(ref-169966-S08063871822005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 40: Check Rear Combination Light (RH) Connector F-08 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear combination light (RH) connector F-08 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «41»(ref-169966-S34195033382005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 42: Check Combination Meter Connector C-01 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are combination meter connector C-01 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «43»(ref-169966-S07920474242005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 44: Check Combination Meter Connector C-02 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are combination meter connector C-02 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «45»(ref-169966-S30582001152005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 46: Check Combination Meter Connector C-02 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is combination meter connector C-02 in good condition?

1. YES Go to step «47»(ref-169966-S16177922262005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 48: Check Front Turn-Signal Light (RH) Connector A-20 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front turn-signal light (RH) connector A-20 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «49»(ref-169966-S04374473922005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the turn-signal lights illuminate normally.

Step 3: Check The Input Signal By Using "DATA LIST" Menu Of The SWS Monitor

Check the input signals from the following switches

1. Ignition Switch ON or START
2. Driver's Door OPEN

Operate scan tool MB991502 according to the procedure below to display "ETACS ECU."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."

Check that normal conditions are displayed on the items described. (Scheme 266)

Are normal conditions displayed on the "IG SW (IG1)" and "FRONT DOOR SW"?

1. YES Go to step «4»(ref-169966-S01653752592005010400000) .
2. NO Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "FRONT DOOR SW": See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) .

Scheme 266

Step 4: Check The Input Signal By Using The Pulse Check Mode Of The Monitor

Check the following switches and input signals

1. Key Reminder Switch
2. All Door Switches
3. Interior Light Loaded Signal

Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."

Check if scan tool MB991502 sounds or not. (Scheme 267)

When the key reminder switch, each door switch and the interior light are operated, does scan tool MB991502 sound in each case?

1. YES Replace the ETACS-ECU. Verify that the dome light illuminates normally.
2. NO Scan tool MB991502 does not sound when the ignition key is removed and reinserted: See «INSPECTION PROCEDURE N-1: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE KEY REMINDER SWITCH»(ref-169966-S12099259662004122200000) . When one of the doors is opened and closed, scan tool MB991502 does not sound: See «INSPECTION PROCEDURE N-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM ALL THE DOOR SWITCHES»(ref-169966-S12091635692005010400000) . When one of the interior lights is illuminated, scan tool MB991502 does not sound: See «INSPECTION PROCEDURE N-10: ETACS-ECU DOES NOT RECEIVE ANY INTERIOR LIGHT LOADED SIGNAL»(ref-169966-S04798444282005010400000) .

Scheme 267

Scheme 268

Step 1. Verify Which Of The Front Dome Light, The Rear Dome Light (Vehicles Without Sunroof) Or The Luggage Compartment Light Does Not Illuminate Normally

Which of the front dome light, the rear dome light (vehicles without sunroof) or the luggage compartment light fail to illuminate normally?

1. Front Dome Light Does Not Illuminate Normally Go to step «2»(ref-169966-S02424390002005010400000) .
2. Rear Dome Light (Vehicles Without Sunroof) Go to step «8»(ref-169966-S10983102882005010400000) .
3. Luggage Compartment Light Go to step «14»(ref-169966-S18059134482005010400000) .

Step 2: Verify The Front Dome Light Bulb

Is the front dome light bulb in good condition?

1. YES Go to step «3»(ref-169966-S21412200252005010400000) .
2. NO Replace the bulb. Verify that the front dome light illuminates normally.

Step 3: Check The Battery Power Supply Circuit To The Front Dome Light

Test at front dome light connector D-05.

1. Disconnect front dome light connector D-05 and measure the voltage available at the harness side of the connector.
2. Measure the voltage between terminal No. 1 and ground. (Scheme 269) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «6»(ref-169966-S31874331352005010400000) .
2. NO Go to step «4»(ref-169966-S07036645692005010400000) .

Scheme 269

Step 4: Check Front Dome Light Connectors D-05 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front dome light connector D-05 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «5»(ref-169966-S13568554762005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the front dome light illuminates normally.

Step 6: Check Front Dome Light Connectors D-05 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front dome light connector D-05 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «7»(ref-169966-S22117321702005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the front dome light illuminates normally.

Step 8: Verify The Rear Dome Light Bulb

Is the rear dome light bulb in good condition?

1. YES Go to step «9»(ref-169966-S25319965282005010400000) .
2. NO Replace the bulb. Verify that the rear dome lights illuminate normally.

Step 9: Check The Battery Power Supply Circuit To The Rear Dome Light

Test at rear dome light connector D-07.

1. Disconnect rear dome light connector D-07 and measure the voltage available at the harness side of the connector.
2. Measure the voltage between terminal No. 1 and ground. (Scheme 270) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «12»(ref-169966-S21244579982005010400000) .
2. NO Go to step «10»(ref-169966-S13617039872005010400000) .

Scheme 270

Step 10: Check Rear Dome Light Connectors D-07 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear dome light connector D-07 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «11»(ref-169966-S01528143682005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the rear dome lights illuminate normally.

Step 12: Check Rear Dome Light Connectors D-07 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear dome light connector D-07 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «13»(ref-169966-S19144917392005010400000) .
2. NO Repair or replace the damaged component(s). Verify that the rear dome lights illuminate normally.

Step 14: Verify The Luggage Compartment Light Bulb

Is the luggage compartment bulb in good condition?

1. YES Go to step «15»(ref-169966-S29011408682005010500000)
2. NO Replace the bulb. Verify that the luggage compartment lights illuminate normally.

Step 15: Check The Battery Power Supply Circuit To The Luggage Compartment Light

Test at luggage compartment light F-02.

1. Disconnect luggage compartment light F-02 and measure the voltage available at the harness side of the connector.
2. Measure the voltage between terminal No. 1 and ground. (Scheme 271) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «18»(ref-169966-S08711781932005010500000) .
2. NO Go to step «16»(ref-169966-S23653147332005010500000) .

Scheme 271

Step 16: Check Luggage Compartment Light Connector F- 02 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are luggage compartment light connector F-02 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «17»(ref-169966-S04155122782005010500000) .
2. NO Repair or replace the damaged component(s). Verify that the luggage compartment lights illuminate normally.

Step 18: Check The Luggage Compartment Light Switch

Disconnect luggage compartment light switch connector F-09. Then check the continuity between the switch and ground. (Scheme 272)

Is the luggage compartment light switch in good condition?

1. YES Go to step «19»(ref-169966-S19629980392005010500000) .
2. NO Replace the luggage compartment light switch. Verify that the luggage compartment lights illuminate normally.

Scheme 272

Step 19: Check Luggage Compartment Light Connector F- 02 And Luggage Compartment Light Switch Connector F-09 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are luggage compartment light connector F-02 and luggage compartment light switch connector F-09 in good condition?

1. YES Go to step «20»(ref-169966-S04554879652005010500000) .
2. NO Repair or replace the damaged component(s). Verify that the luggage compartment lights illuminate normally.

Step 1: Verify The Front Dome Light And The Rear Dome Light

If the front dome light switch and the rear dome light switch (vehicles without sunroof) are moved to the "door interlock position", the front dome light and the rear dome light (vehicles without sunroof) should illuminate when either door is opened.

Do the front dome light and the rear dome light illuminate normally?

1. Both The Front Dome Light And The Rear Dome Light (Vehicles Without Sunroof) Illuminate Normally Go to step «2»(ref-169966-S15340005332005010500000) .
2. Neither The Front Dome Light Nor The Rear Dome Light (Vehicles Without Sunroof) Illuminates Normally See «INSPECTION PROCEDURE L-1: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT AND LUGGAGE COMPARTMENT LIGHT DO NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S02166090922004122800000) .
3. Either The Front Dome Light Or The Rear Dome Light (Vehicles Without Sunroof) Illuminates Normally See «INSPECTION PROCEDURE L-2: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT (VEHICLES WITHOUT SUNROOF) OR LUGGAGE COMPARTMENT LIGHT DOES NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S09620893892005010400000) .

Check the input signals from the following switches

1. Ignition Switch ON or START
2. Driver's Door OPEN

Operate scan tool MB991502 according to the procedure below to display "ETACS ECU."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."

Check that normal conditions are displayed on the items described. (Scheme 273)

Are normal conditions displayed on the "IG SW (IG1)" and "FRONT DOOR SW"?

1. YES Go to step «4»(ref-169966-S04532050622005010500000) .
2. NO Normal condition is not displayed on the "IG SW (IG1)": See «INSPECTION PROCEDURE M-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-169966-S21751459992004122200000) . Normal condition is not displayed on the "FRONT DOOR SW": See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) .

Scheme 273

Check the following switches and input signals

1. Key Reminder Switch
2. All Door Switches
3. Interior Light Loaded Signal

Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."

Check if scan tool MB991502 sounds or not. (Scheme 274)

When the key reminder switch, each door switch and the interior light are operated, does scan tool MB991502 sound in each case?

1. YES Replace the ETACS-ECU. Verify that the dome light illuminates normally.
2. NO Scan tool MB991502 does not sound when the ignition key is removed and reinserted: See «INSPECTION PROCEDURE N-1: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE KEY REMINDER SWITCH»(ref-169966-S12099259662004122200000) . When one of the doors is opened and closed, scan tool MB991502 does not sound: See «INSPECTION PROCEDURE N-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM ALL THE DOOR SWITCHES»(ref-169966-S12091635692005010400000) . When one of the interior lights is illuminated, scan tool MB991502 does not sound: See «INSPECTION PROCEDURE N-10: ETACS-ECU DOES NOT RECEIVE ANY INTERIOR LIGHT LOADED SIGNAL»(ref-169966-S04798444282005010400000) .

Scheme 274

Scheme 275

Step 1: Verify The Front Dome Light And The Rear Dome Light (Vehicles Without Sunroof)

If the front dome light switch and the rear dome light switch (vehicles without sunroof) are moved to the "door interlock position", the front dome light and the rear dome light (vehicles without sunroof) should illuminate when either door is opened.

Do the front dome light and the rear dome light illuminate normally?

1. YES Go to step «2»(ref-169966-S39867295962005010500000) .
2. NO Neither the front dome light nor the rear dome light illuminates normally: See «INSPECTION PROCEDURE L-1: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT AND LUGGAGE COMPARTMENT LIGHT DO NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S02166090922004122800000) . Either the front dome light or the rear dome light illuminates normally: See «INSPECTION PROCEDURE L-2: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT (VEHICLES WITHOUT SUNROOF) OR LUGGAGE COMPARTMENT LIGHT DOES NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S09620893892005010400000) .

Check the input signals from the following switches

1. Ignition Switch OFF
2. Driver's And Front Passenger's Door OPEN

Operate scan tool MB991502 according to the procedure below to display "ETACS ECU."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."

Check that normal conditions are displayed on the items described. (Scheme 276)

Scheme 276

Check the following switches and input signals

1. Interior Light Loaded Signal

Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."

Check if scan tool MB991502 sounds or not. (Scheme 277)

Does scan tool MB991502 sound when the interior light loaded signal is operated?

1. YES Replace the ETACS-ECU. Verify that the dome light illuminates normally.
2. NO See «INSPECTION PROCEDURE N-10: ETACS-ECU DOES NOT RECEIVE ANY INTERIOR LIGHT LOADED SIGNAL»(ref-169966-S04798444282005010400000) .

Scheme 277

Scheme 278

Step 1. Verify The Dome Light And The Rear Dome Light (Vehicles Without Sunroof)

If the dome light switch and the rear dome light switch (vehicles without sunroof) are moved to the "door interlock position", the dome light and the rear dome light (vehicles without sunroof) should illuminate when either door is opened.

Do the dome light and the rear dome light illuminate normally?

1. Both The Dome Light And The Rear Dome Light Illuminate Normally Go to step «2»(ref-169966-S07093849822005010500000) .
2. Neither The Dome Light Nor The Rear Dome Light Illuminates Normally See «INSPECTION PROCEDURE L-1: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT AND LUGGAGE COMPARTMENT LIGHT DO NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S02166090922004122800000) .
3. Either The Dome Light Or The Rear Dome Light Illuminates Normally See «INSPECTION PROCEDURE L-2: INTERIOR LIGHT: THE FRONT DOME LIGHT, REAR DOME LIGHT (VEHICLES WITHOUT SUNROOF) OR LUGGAGE COMPARTMENT LIGHT DOES NOT ILLUMINATE OR GO OUT NORMALLY»(ref-169966-S09620893892005010400000) .

Open the driver's door before checking the input signals from the front door switch (LH).

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Operate scan tool MB991502 according to the procedure below to display "ETACS ECU" Select "SYSTEM SELECT." Select "SWS." Select "SWS MONITOR." Select "DATA LIST." Select "ETACS ECU."
4. Check that normal conditions are displayed on the items described. (Scheme 279)

Is normal condition displayed on the "FRONT DOOR SW"?

1. YES Go to step «3»(ref-169966-S02205180852005010500000) .
2. NO See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) .

Scheme 279

Check the input signals from all the door switches. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."

If a door (except front doors) is opened and closed, check if scan tool MB991502 sounds or not.

If a door (except front doors) is opened and closed, does scan tool MB991502 sound?

1. YES Go to step «4»(ref-169966-S40739803602005010500000) .
2. NO See «INSPECTION PROCEDURE N-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM ALL THE DOOR SWITCHES»(ref-169966-S12091635692005010400000) .

Step 4: Check The Battery Power Supply Circuit To The Combination Meter

Test at combination meter connector C-01.

1. Disconnect combination meter connector C-01 and measure the voltage available at the harness side of the connector.
2. Measure the voltage between terminal No. 8 and ground. (Scheme 280) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «7»(ref-169966-S29600298462005010500000) .
2. NO Go to step «5»(ref-169966-S22106889262005010500000) .

Scheme 280

Step 5: Check Combination Meter Connector C-01 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are combination meter connector C-01 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «6»(ref-169966-S02726902472005010500000) .
2. NO Repair or replace the damaged component(s). Verify that the door ajar indicator light illuminates normally.

Step 7: Check Combination Meter Connector C-02 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are combination meter connector C-02 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «8»(ref-169966-S26010939742005010500000) .
2. NO Repair or replace the damaged component(s). Verify that the door ajar indicator light illuminates normally.

SWS MONITOR

SWS MONITOR PROBLEMS

Step 1: Check The Ignition Switch (ACC) Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Turn the ignition switch to the "ACC" position.
3. Measure the voltage between terminal No. 18 and ground. (Scheme 281) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the ETACS-ECU. If the equipment, which are described in «Circuit Operation»(ref-169966-S29765043062005010500000) , work normally, the input signal from the ignition switch (ACC) should be normal.
2. NO Go to step «2»(ref-169966-S00548829552005010500000) .

Scheme 281

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «3»(ref-169966-S28351696172005010500000) .
2. NO Repair or replace the damaged component(s). If the equipment, which are described in «Circuit Operation»(ref-169966-S29765043062005010500000) , work normally, the input signal from the ignition switch (ACC) should be normal.

Step 1: Check The Ignition Switch (IG1) Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 8 and ground. (Scheme 282) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the ETACS-ECU. If the functions, which are described in «Circuit Operation»(ref-169966-S27871175852005010500000) , work normally, the input signal from the ignition switch (IG1) should be normal.
2. NO Go to step «2»(ref-169966-S42123645592005010500000) .

Scheme 282

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «3»(ref-169966-S08233420672005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S27871175852005010500000) , work normally, the input signal from the ignition switch (IG1) should be normal.

Step 1: Check The Backup Light Switch

Disconnect backup light switch connector B-111. Then check continuity between the switch terminals. (Scheme 283)

Is the backup light switch in good condition?

1. YES Go to step «2»(ref-169966-S29624396532005010500000) .
2. NO Replace the backup light switch. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.

Scheme 283

Step 2: Check The Ignition Switch (IG1) Circuit To The Backup Light Switch

Test at backup light switch connector B-111.

1. Disconnect backup light switch connector B-111 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 1 and ground. (Scheme 284) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «5»(ref-169966-S39112892282005010500000) .
2. NO Go to step «3»(ref-169966-S23707122872005010500000) .

Scheme 284

Step 3: Check Backup Light Switch Connector B-111 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the backup light switch connector B-111 in good condition?

1. YES Go to step «4»(ref-169966-S14695958442005010500000) .
2. NO Repair or replace the damaged component(s). If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.

Step 5: Check Backup Light Switch Connector B-111 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are backup light switch connector B-111 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «6»(ref-169966-S23082733532005010500000) .
2. NO Repair or replace the damaged component(s). If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.

Step 1: Check The Park/Neutral Position Switch

Disconnect Park/Neutral position switch connector B-16. Then check continuity between the switch terminals. (Scheme 285)

Is the Park/Neutral position switch in good condition?

1. YES Go to step «2»(ref-169966-S39048155402005010500000) .
2. NO Replace the Park/Neutral position switch. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the Park/Neutral position switch.

Scheme 285

Step 2: Check The Ignition Switch (IG1) Line Of The Power Supply Circuit To The Park/Neutral Switch

Test at Park/Neutral switch connector B-16.

1. Disconnect park/neutral position switch connector B-16 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 8 and ground. (Scheme 286) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «5»(ref-169966-S27561657872005010500000) .
2. NO Go to step «3»(ref-169966-S17820952062005010500000) .

Scheme 286

Step 3: Check Park/Neutral Position Switch Connector B-16 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is Park/Neutral position switch connector B-16 in good condition?

1. YES Go to step «4»(ref-169966-S26599388662005010500000) .
2. NO Repair or replace the damaged component(s). If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the Park/Neutral position switch.

Step 5: Check Park/Neutral Position Switch Connector B-16 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are Park/Neutral position switch connector B-16 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «6»(ref-169966-S08490888462005010500000) .
2. NO Repair or replace the damaged component(s). If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the Park/Neutral position switch.

Check the input signals from the front door switches.

1. Connect scan tool MB991502 to the data link connector.
2. Operate scan tool MB991502 according to the procedure below to display "PULSE CHECK." Select "SYSTEM SELECT." Select "SWS." Select "PULSE CHECK."
3. When each front door is opened and closed, check if scan tool MB991502 sounds or not.

Does scan tool MB991502 sound when each front door is opened and closed?

1. When The Driver's Door Is Opened And Closed, Scan Tool MB991502 Does Not Sound Go to step «2»(ref-169966-S21877910572005010500000) .
2. When The Front Passenger's Door Is Opened And Closed, Scan Tool MB991502 Does Not Sound Go to step «6»(ref-169966-S39413917922005010500000) .
3. When Each Front Door Is Opened And Closed, Scan Tool MB991502 Sounds Replace the ETACS-ECU. If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the driver's or the front passenger's door switch should be normal.

Step 2: Check The Driver's Door Switch

Remove the driver's door switch. Then check the continuity between the switch terminals. (Scheme 287)

Is the driver's door switch in good condition?

1. YES Go to step «3»(ref-169966-S30401272492005010500000) .
2. NO Replace the front door switch (LH). If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the driver's door switch should be normal.

Scheme 287

Step 3: Measure At The Lower Metal Part Of The Driver's Door Switch In Order To Check The Ground Circuit To The Driver's Door Switch

Note. Check that the driver's door switch is grounded to the vehicle body by means of its mounting screw.

Remove the cap, and measure the resistance value between the lower metal part and the ground. (Scheme 288) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «4»(ref-169966-S31940056432005010500000) .
2. NO Check the fit of the switch, and repair if necessary. If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the driver's door switch should be normal.

Scheme 288

Step 4: Check Driver's Door Switch Connector D-18 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are driver's door switch connector D-18 and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «5»(ref-169966-S23884555322005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the driver's door switch should be normal.

Step 6: Check The Front Passenger's Door Switch

Remove the front passenger's door switch. Then check the continuity between the switch terminals. (Scheme 289)

Is the front passenger's door switch in good condition?

1. YES Go to step «7»(ref-169966-S05363172312005010500000) .
2. NO Replace the front passenger's door switch. If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the front passenger's door switch should be normal.

Scheme 289

Step 7: Measure At The Lower Metal Part Of The Passenger's Door Switch In Order To Check The Ground Circuit To The Front Passenger's Door Switch

Note. Check that the front passenger's door switch is grounded to the vehicle body by means of its mounting screw.

Remove the cap, and measure the resistance value between the lower metal part and the ground. (Scheme 290) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «8»(ref-169966-S16008042512005010500000) .
2. NO Check the fit of the switch, and repair if necessary. If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the front passenger's door switch should be normal.

Scheme 290

Step 8: Check Front Passenger's Door Switch Connector D-01 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front passenger's door switch connector D-01 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «9»(ref-169966-S06054760902005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S39068838832005010500000) , work normally, the input signal from the front passenger's door switch should be normal.

Step 2: Check The Windshield Wiper And Washer Switch

Remove the windshield wiper and washer switch. Then check continuity between the switch terminals. (Scheme 291)

Are the windshield wiper and washer switch in good condition?

1. YES Go to step «3»(ref-169966-S30866005132005010500000) .
2. NO Replace the column switch. If the equipment, which are described in «Circuit Operation»(ref-169966-S02677930232005010500000) , work normally, the input signal from the column switch (windshield wiper and washer switch) should be normal.

Scheme 291

Step 3: Check The Switch Body

Remove the turn-signal light and lighting switch and windshield wiper and washer switch. Then check continuity between the switch body terminals. (Scheme 292)

Is the switch body in good condition?

1. YES Go to step «4»(ref-169966-S16173505312005010500000) .
2. NO Replace the column switch. If the equipment, which are described in «Circuit Operation»(ref-169966-S02677930232005010500000) , work normally, the input signal from the column switch (windshield wiper and washer switch) should be normal.

Scheme 292

Step 1: Check The Windshield Intermittent Wiper Interval Adjusting Knob

1. Remove the windshield wiper and washer switch, and check at the switch side. (Scheme 293)
2. Measure the resistance value between terminals No. 3 and 6. The measured resistance should change smoothly from approximately 0 ohm ("FAST" position) to 1 kilohm ("SLOW" position).

Is the windshield intermittent wiper interval adjusting knob in good condition?

1. YES Go to step «2»(ref-169966-S08743974682005010500000) .
2. NO Replace the column switch (windshield wiper and washer switch). If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

Scheme 293

Step 2: Check The Column Switch Body

Remove the turn-signal light and lighting switch and windshield wiper and washer switch. Then check continuity between the switch body terminals. (Scheme 294)

Is the column switch body in good condition?

1. YES Go to step «3»(ref-169966-S04980320132005010500000) .
2. NO Replace the column switch body. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

Scheme 294

Step 3: Check Column Switch Connector C-206 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are column switch connector C-206 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «4»(ref-169966-S00334415842005010500000) .
2. NO Repair or replace the damaged component(s). If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

Step 1: Check The Key Reminder Switch

Disconnect key reminder switch connector C-207. Then check continuity between terminals. (Scheme 295)

Is the key reminder switch in good condition?

1. YES Go to step «2»(ref-169966-S14711547452005010500000) .
2. NO Replace the key reminder switch. If the functions, which are described in «Circuit Operation»(ref-169966-S22133879512005010500000) , work normally, the input signal from the key reminder switch should be normal.

Scheme 295

Step 2: Check The Ground Circuit To The Key Reminder Switch

Test at key reminder switch connector C-207.

1. Disconnect key reminder switch connector C-207 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 4 and ground. (Scheme 296) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «5»(ref-169966-S35804451052005010500000) .
2. NO Go to step «3»(ref-169966-S42026125572005010500000) .

Scheme 296

Step 3: Check Key Reminder Switch Connector C-207 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is key reminder switch connector C-207 in good condition?

1. YES Go to step «4»(ref-169966-S03318583402005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in "CIRCUIT OPERATION", work normally, the input signal from the key reminder switch should be normal.

Step 5: Check Key Reminder Switch Connector C-207 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are key reminder switch connector C-207 and ETACS- ECU connector C-227 in good condition?

1. YES Go to step «6»(ref-169966-S27459921802005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S22133879512005010500000) , work normally, the input signal from the key reminder switch should be normal.

Step 7: Check For Continuity Between Key Reminder Switch Connector C-207 Terminal No. 4 And Each Of The Other Terminals As Well As Terminal No. 6 And Each Of The Other Terminals

1. Disconnect key reminder switch connector C-207 and measure the resistance available at the equipment side of the connector.
2. Check for continuity between key reminder switch connector C-207 terminal No. 4 and each of the other terminals as well as terminal No. 6 and each of the other terminals.

Does the continuity exist between the terminals?

1. YES Replace the ETACS-ECU. If the functions, which are described in «Circuit Operation»(ref-169966-S22133879512005010500000) , work normally, the input signal from the key reminder switch should be normal.
2. NO Replace the key reminder switch. If the functions, which are described in «Circuit Operation»(ref-169966-S22133879512005010500000) , work normally, the input signal from the key reminder switch should be normal.

Scheme 297

Step 1: Check The Hazard Warning Light Switch

Remove the hazard warning light switch. Then check continuity between the switch terminals. (Scheme 298)

Is the hazard warning light switch in good condition?

1. YES Go to step «2»(ref-169966-S36434941482005010500000) .
2. NO Replace the hazard warning light switch. If the equipment, which are described in «Circuit Operation»(ref-169966-S41151275632005010500000) , work normally, the input signal from the hazard warning light switch should be normal.

Scheme 298

Step 2: Check The Ground Circuit To The Hazard Warning Light Switch

Test at hazard warning light switch connector C-03.

1. Disconnect hazard warning light switch connector C-03 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 2 and ground. (Scheme 299) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «5»(ref-169966-S13664047082005010500000) .
2. NO Go to step «3»(ref-169966-S26371363192005010500000) .

Scheme 299

Step 3: Check Hazard Warning Light Switch Connector C-03 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is hazard warning light switch connector C-03 in good condition?

1. YES Go to step «4»(ref-169966-S27290786092005010500000) .
2. NO Repair or replace the damaged component(s). If the equipment, which are described in «Circuit Operation»(ref-169966-S41151275632005010500000) , work normally, the input signal from the hazard warning light switch should be normal.

Step 5: Check Hazard Warning Light Switch Connector C-03 And ETACS-ECU Connector C-228 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are hazard warning light switch connector C-03 and ETACS-ECU connector C-228 in good condition?

1. YES Go to step «6»(ref-169966-S41156413242005010500000) .
2. NO Repair or replace the damaged component(s). If the equipment, which are described in «Circuit Operation»(ref-169966-S41151275632005010500000) , work normally, the input signal from the hazard warning light switch should be normal.

Step 1: Check The Driver's Seat Belt Switch

Disconnect driver's seat belt switch connector D-20. Then check continuity between the switch terminals. (Scheme 300)

Is the driver's seat belt switch in good condition?

1. YES Go to step «2»(ref-169966-S17222453122005010500000) .
2. NO Replace the driver's seat belt. If the functions, which are described in «Circuit Operation»(ref-169966-S38581388702005010500000) , work normally, the input signal from the driver's seat belt switch should be normal.

Scheme 300

Step 2: Check The Battery Ground Circuit To The Driver's Seat Belt Switch

Test at driver's seat belt switch connector D-20.

1. Disconnect driver's seat belt switch connector D-20 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 2 and ground. (Scheme 301) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «5»(ref-169966-S28250539232005010500000) .
2. NO Go to step «3»(ref-169966-S17965598502005010500000) .

Scheme 301

Step 3: Check Driver's Seat Belt Switch Connector D-20 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is the driver's seat belt switch connector D-20 in good condition?

1. YES Go to step «4»(ref-169966-S11343763052005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S38581388702005010500000) , work normally, the input signal from the driver's seat belt switch should be normal.

Step 5: Check Driver's Seat Belt Switch Connector D-20 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are driver's seat belt switch connector D-20 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «6»(ref-169966-S16415891352005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S38581388702005010500000) , work normally, the input signal from the driver's seat belt switch should be normal.

Step 1: Check Which Door Switch Is Defective

Which door switch signal is not entered?

1. Driver's Or Front Passenger's Door See «INSPECTION PROCEDURE M-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-169966-S16167931472004122200000) .
2. Rear Door (LH) Go to step «2»(ref-169966-S32897197472005010500000) .
3. Rear Door (RH) Go to step «6»(ref-169966-S26572102802005010500000) .

Step 2: Check The Rear Door Switch (LH)

Remove the rear door switch (LH). Then check continuity between the switch terminals. (Scheme 302)

Is the rear door switch (LH) in good condition?

1. YES Go to step «3»(ref-169966-S04743028392005010500000) .
2. NO Replace the rear door switch (LH). If the functions, which are described in «Circuit Operation»(ref-169966-S38301964122005010500000) , work normally, the input signal from the rear door switch (LH) should be normal.

Scheme 302

Step 3: Measure At The Lower Metal Part Of The Rear Door Switch (LH) In Order To Check The Ground Circuit To The Rear Door Switch (LH)

Note. Check that the rear door switch (LH) is grounded to the vehicle body by means of its mounting screw.

Remove the cap, and measure the resistance value between the lower metal part and the ground. (Scheme 303) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «4»(ref-169966-S39624012742005010500000) .
2. NO Check the fit of the switch, and repair if necessary. If the functions, which are described in «Circuit Operation»(ref-169966-S38301964122005010500000) , work normally, the input signal from the rear door switch (LH) should be normal.

Scheme 303

Step 4: Check Rear Door Switch (LH) Connector D-11 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear door switch (LH) connector D-11and ETACS-ECU connector C-226 in good condition?

1. YES Go to step «5»(ref-169966-S30127350552005010500000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S38301964122005010500000) , work normally, the input signal from the rear door switch (LH) should be normal.

Step 6: Check The Rear Door Switch (RH)

Remove the rear door switch (RH). Then check continuity between the switch terminals. (Scheme 304)

Is the rear door switch (RH) in good condition?

1. YES Go to step «7»(ref-169966-S27407402262005010600000) .
2. NO Replace the rear door switch (RH). If the functions, which are described in «Circuit Operation»(ref-169966-S38301964122005010500000) , work normally, the input signal from the rear door switch (RH) should be normal.

Scheme 304

Step 7: Measure At The Lower Metal Part Of The Rear Door Switch (RH) In Order To Check The Ground Circuit To The Rear Door Switch (RH)

Note. Check that the rear door switch (RH) is grounded to the vehicle body by means of its mounting screw. Remove the cap, and measure the resistance value between the lower metal part and the ground. (Scheme 305) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «8»(ref-169966-S26165775052005010600000) .
2. NO Check the fit of the switch, and repair if necessary. If the functions, which are described in «Circuit Operation»(ref-169966-S38301964122005010500000) , work normally, the input signal from the rear door switch (RH) should be normal.

Scheme 305

Step 8: Check Rear Door Switch (RH) Connector D-08 And ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are rear door switch (RH) connector D-08 and ETACS- ECU connector C-226 in good condition?

1. YES Go to step «9»(ref-169966-S15170777522005010600000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S38301964122005010500000) , work normally, the input signal from the rear door switch (RH) should be normal.

Step 1: Check Which Door Lock Key Cylinder Switch Is Defective

Which door lock key cylinder switch does not send a signal to the ECU?

1. Driver's Door Go to step «2»(ref-169966-S16123520622005010600000) .
2. Front Passenger's Door Go to step «8»(ref-169966-S39752641352005010600000) .

Step 2: Check The Driver's Door Lock Key Cylinder Switch

Disconnect door lock key cylinder switch (LH) connector E-01. Then check continuity between the switch terminals. (Scheme 306)

Is the driver's door lock key cylinder switch in good condition?

1. YES Go to step «3»(ref-169966-S40653457272005010600000) .
2. NO Replace the driver's door lock key cylinder switch. If the systems, which are described in «Circuit Operation»(ref-169966-S28677255372005010600000) , work normally, the input signal from the driver's door lock key cylinder switch should be normal.

Scheme 306

Step 3: Check The Ground Circuit To The Driver's Door Lock Key Cylinder Switch

Test at driver's door lock key cylinder switch connector E-01.

1. Disconnect driver's door lock key cylinder switch connector E-01 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 2 and ground. (Scheme 307) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «6»(ref-169966-S34718197422005010600000) .
2. NO Go to step «4»(ref-169966-S31923764622005010600000) .

Scheme 307

Step 4: Check Driver's Door Lock Key Cylinder Switch Connector E-01 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector.

Is driver's door lock key cylinder switch connector E-01 in good condition?

1. YES Go to step «5»(ref-169966-S34265447032005010600000) .
2. NO Repair or replace the damaged component(s). If the systems, which are described in «Circuit Operation»(ref-169966-S28677255372005010600000) , work normally, the input signal from the driver's door lock key cylinder switch should be normal.

Step 6: Check Driver's Door Lock Key Cylinder Switch Connector E-01 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are driver's door lock key cylinder switch connector E-01 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «7»(ref-169966-S21529220892005010600000) .
2. NO Repair or replace the damaged component(s). If the systems, which are described in «Circuit Operation»(ref-169966-S28677255372005010600000) , work normally, the input signal from the driver's door lock key cylinder switch should be normal.

Step 8: Check The Front Passenger's Door Lock Key Cylinder Switch

Disconnect door lock key cylinder switch (RH) connector E-12. Then check continuity between the switch terminals. (Scheme 308)

Is the front passenger's door lock key cylinder switch in good condition?

1. YES Go to step «9»(ref-169966-S39752641352005010600000) .
2. NO Replace the front passenger's door lock key cylinder switch. If the systems, which are described in «Circuit Operation»(ref-169966-S28677255372005010600000) , work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.

Scheme 308

Step 9: Check The Ground Circuit To The Door Lock Key Cylinder Switch (RH)

Test at door lock key cylinder switch (RH) connector E-12.

1. Disconnect front passenger's door lock key cylinder switch connector E-12 measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal 2 and ground. (Scheme 309) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «12»(ref-169966-S15313668002005010600000) .
2. NO Go to step «10»(ref-169966-S38542468462005010600000) .

Scheme 309

Step 10: Check Front Passenger's Door Lock Key Cylinder Switch Connector E-12 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is front passenger's door lock key cylinder switch connector E-12 in good condition?

1. YES Go to step «11»(ref-169966-S30264611262005010600000) .
2. NO Repair or replace the damaged component(s). If the systems, which are described in «Circuit Operation»(ref-169966-S28677255372005010600000) , work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.

Step 12: Check Front Passenger's Door Lock Key Cylinder Switch Connector E-12 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are front passenger's door lock key cylinder switch connector E-12 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «13»(ref-169966-S37689792832005010600000) .
2. NO Repair or replace the damaged component(s). If the systems, which are described in «Circuit Operation»(ref-169966-S28677255372005010600000) , work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.

Step 1: Check The Driver's Door Lock Actuator Switch

Disconnect driver's door lock actuator switch connector E-04. Then check continuity between the switch terminals. (Scheme 310)

Is the driver's door lock actuator switch in good condition?

1. YES Go to step «2»(ref-169966-S09136285652005010600000) .
2. NO Replace the driver's door lock actuator switch. If the functions, which are described in «Circuit Operation»(ref-169966-S36102843502005010600000) , work normally, the input signal from the driver's door lock actuator switch should be normal.

Scheme 310

Step 2: Check The Ground Circuit To The Driver's Door Lock Actuator Switch

Test at driver's door lock actuator switch connector E-04.

1. Disconnect driver's door lock actuator switch connector E-04 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 1 and ground. (Scheme 311) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «5»(ref-169966-S39177830042005010600000) .
2. NO Go to step «3»(ref-169966-S04908972182005010600000) .

Scheme 311

Step 3: Check Driver's Door Lock Actuator Switch Connector E-04 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is driver's door lock actuator switch connector E-04 in good condition?

1. YES Go to step «4»(ref-169966-S25561299492005010600000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S36102843502005010600000) , work normally, the input signal from the driver's door lock actuator switch should be normal.

Step 5: Check Driver's Door Lock Actuator Switch Connector E-04 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are driver's door lock actuator switch connector E-04 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «6»(ref-169966-S14228734442005010600000) .
2. NO Repair or replace the damaged component(s). If the functions, which are described in «Circuit Operation»(ref-169966-S36102843502005010600000) , work normally, the input signal from the driver's door lock actuator switch should be normal.

Which door switch signal is not entered?

1. Power Window Main Switch (Driver's Door) Go to step «2»(ref-169966-S01379399702005010600000) .
2. Power Window Sub Switch (Front Passenger's Door) Go to step «8»(ref-169966-S41035817922005010600000) .

Step 2: Check The Door Lock Switch (Power Window Main Switch)

Remove the power window main switch. Then check continuity between the switch terminals. (Scheme 312)

Is the door lock switch (power window main switch) in good condition?

1. YES Go to step «3»(ref-169966-S17339209892005010600000) .
2. NO Replace the power window main switch. If the central door locking system works normally, input signal from the door lock switch should be normal.

Scheme 312

Step 3: Check The Ground Circuit To The Power Window Main Switch

Test at power window main switch connector E-05.

1. Disconnect power window main switch connector E-05 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 12 and ground. (Scheme 313) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «6»(ref-169966-S04308559392005010600000) .
2. NO Go to step «4»(ref-169966-S26289575222005010600000) .

Scheme 313

Step 4. Check Power Window Main Switch Connector E-05 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is power window main switch connector E-05 in good condition?

1. YES Go to step «5»(ref-169966-S36813119672005010600000) .
2. NO Repair or replace the damaged component(s). If the central door locking system works normally, input signal from the door lock switch should be normal.

Step 6: Check Power Window Main Switch Connector E-05 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window main switch connector E-05 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «7»(ref-169966-S21900329102005010600000) .
2. NO Repair or replace the damaged component(s). If the central door locking system works normally, input signal from the door lock switch should be normal.

Step 8: Check The Door Lock Switch (Power Window Sub Switch)

Remove the power window sub switch. Then check continuity between the switch terminals. (Scheme 314)

Is the door lock switch (power window sub switch) in good condition?

1. YES Go to step «9»(ref-169966-S06307613222005010600000) .
2. NO Replace the power window sub switch. If the central door locking system works normally, input signal from the door lock switch should be normal.

Scheme 314

Step 9: Check The Ground Circuit To The Power Window Sub Switch

Test at power window sub switch connector E-14.

1. Disconnect power window sub switch connector E-14 and measure the resistance available at the wiring harness side of the connector.
2. Measure the resistance value between terminal No. 2 and ground. (Scheme 315) The resistance should equal 2 ohms or less.

Is the measured resistance 2 ohms or less?

1. YES Go to step «12»(ref-169966-S40942149712005010600000) .
2. NO Go to step «10»(ref-169966-S31878242762005010600000) .

Scheme 315

Step 10: Check Power Window Sub Switch Connector E-14 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is power window sub switch connector E-14 in good condition?

1. YES Go to step «11»(ref-169966-S29108795362005010600000) .
2. NO Repair or replace the damaged component(s). If the central door locking system works normally, input signal from the door lock switch should be normal.

Step 12: Check Power Window Sub Switch Connector E-14 And ETACS-ECU Connector C-227 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are power window sub switch connector E-14 and ETACS-ECU connector C-227 in good condition?

1. YES Go to step «13»(ref-169966-S33921963722005010600000) .
2. NO Repair or replace the damaged component(s). If the central door locking system works normally, input signal from the door lock switch should be normal.

Step 1: Check That The Combination Meter (Speedometer) Works Normally

Does the combination meter (speedometer) work normally?

1. YES Go to step «2»(ref-169966-S42681499202005010600000) .
2. NO See «INSPECTION PROCEDURE 2: SPEEDOMETER DOES NOT WORK»(ref-169950-S30329423522004122100000) in GAUGES & INSTRUMENT PANELS article.

Step 2: Check ETACS-ECU Connector C-228 And Vehicle Speed Sensor Connector B-04 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-228 and vehicles speed sensor connector B-04 in good condition?

1. YES Go to step «3»(ref-169966-S18219486582005010600000) .
2. NO Repair or replace the damaged component(s). If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

Does the combination meter (speedometer) work normally?

1. YES Go to step «2»(ref-169966-S07697709812005010600000) .
2. NO See «INSPECTION PROCEDURE 2: SPEEDOMETER DOES NOT WORK»(ref-169950-S30329423522004122100000) in GAUGES & INSTRUMENT PANELS article.

Step 2: Check ETACS-ECU Connector C-228 And Powertrain Control Module Connector C-116 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Are ETACS-ECU connector C-228 and powertrain control module connector C-116 in good condition?

1. YES Go to step «3»(ref-169966-S20022979002005010600000) .
2. NO Repair or replace the damaged component(s). If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

Step 1: Register The Transmitter

Replace the transmitter. See HOW TO REGISTER SECRET CODE in KEYLESS ENTRY article.

Can the transmitter be registered correctly?

1. YES If the systems, which are described in «Circuit Operation»(ref-169966-S30767887882005010600000) , work normally, the input signal from the transmitter should be normal.
2. NO Go to step «2»(ref-169966-S26638650542005010600000) .

Step 2: Check The Transmitter Battery

Measure the voltage of the transmitter battery. (Scheme 316) The value should be approximately 2.5-3.2 volts.

Is the measured voltage approximately 2.5-3.2 volts (battery positive voltage)?

1. YES Go to step «3»(ref-169966-S22493082852005010600000) .
2. NO Replace the battery. If the transmitter can be registered normally, and the systems, which are described in «Circuit Operation»(ref-169966-S30767887882005010600000) , operate normally, it indicates that the transmitter is sending normal signal to the ECU.

Scheme 316

Substantial other transmitter in order to register encrypted code. See HOW TO REGISTER SECRET CODE in KEYLESS ENTRY article.

Can the transmitter be registered correctly?

1. YES If the systems, which are described in «Circuit Operation»(ref-169966-S30767887882005010600000) , work normally, the input signal from the transmitter should be normal.
2. NO Replace the ETACS-ECU. If the systems, which are described in «Circuit Operation»(ref-169966-S30767887882005010600000) , work normally, the input signal from the transmitter should be normal.

Scheme 317

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Measure the voltage between terminal No. 20 and ground. (Scheme 318) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «4»(ref-169966-S21321893702005010600000) .
2. NO Go to step «2»(ref-169966-S17707848942005010600000) .

Scheme 318

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «3»(ref-169966-S36258304862005010600000) .
2. NO Repair or replace the damaged component(s). If the functions or equipment, which are described in «Circuit Operation»(ref-169966-S19465421392005010600000) , work normally, the interior light loaded signal should be normal.

Step 4: Check The Ignition Switch (IG1) Line Of The Power Supply Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal No. 8 and ground. (Scheme 319) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Go to step «7»(ref-169966-S41950794832005010600000) .
2. NO Go to step «5»(ref-169966-S32355554372005010600000) .

Scheme 319

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «6»(ref-169966-S05657501822005010600000) .
2. NO Repair or replace the damaged component(s). If the functions or equipment, which are described in «Circuit Operation»(ref-169966-S19465421392005010600000) , work normally, the interior light loaded signal should be normal.

Step 7: Check The Ignition Switch (ACC) Line Of The Power Supply Circuit To The ETACS-ECU

Test at ETACS-ECU connector C-226.

1. Disconnect ETACS-ECU connector C-226 and measure the voltage available at the junction block side of the connector.
2. Turn the ignition switch to the "ACC" position.
3. Measure the voltage between terminal No. 4 and ground. (Scheme 320) The voltage should equal approximately 12 volts (battery positive voltage).

Is the measured voltage approximately 12 volts (battery positive voltage)?

1. YES Replace the ETACS-ECU. If the functions or equipment, which are described in «Circuit Operation»(ref-169966-S19465421392005010600000) , work normally, the interior light loaded signal should be normal.
2. NO Go to step «8»(ref-169966-S10744014332005010600000) .

Scheme 320

Step 8: Check ETACS-ECU Connector C-226 For Loose, Corroded Or Damaged Terminals, Or Terminals Pushed Back In The Connector

Is ETACS-ECU connector C-226 in good condition?

1. YES Go to step «9»(ref-169966-S12444183432005010600000) .
2. NO Repair or replace the damaged component(s). If the functions or equipment, which are described in «Circuit Operation»(ref-169966-S19465421392005010600000) , work normally, the interior light loaded signal should be normal.