Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" EKS00I9C
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SUPPLEMENTAL RESTRAINT SYSTEM and SEAT BELTS articles.
| WARNING | To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SUPPLEMENTAL RESTRAINT SYSTEM article. Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this article. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
Commercial Service Tool
COMMERCIAL SERVICE TOOL DESCRIPTION Tool name Description Power tool Loosening bolts and nuts
Scheme 85
Scheme 86
UNIFIED METER CONTROL UNIT
- Speedometer, ODO/trip meter, tachometer and fuel gauge are controlled by the unified meter control unit, which is built into the combination meter.
- Warning and indicator lamps are controlled by signals drawn from the CAN communication system, BCM (body control module), and components connected directly to the combination meter.
- ODO/trip meter and A/T indicator (with A/T) or CVT indicator (with CVT) segments can be checked in self-diagnosis mode.
- Meters/gauges can be checked in self-diagnosis mode.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
- Through 10A fuse [No. 13, located in the fuse block (J/B)]
- To combination meter terminal 27.
With the ignition switch in the ON or START position, power is supplied
- Through 10A fuse [No. 14, located in the fuse block (J/B)]
- To combination meter terminal 28.
Ground is supplied
- To combination meter terminals 21, 22 and 23
- Through grounds M57 and M61.
With ABS
The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via CAN communication lines.
Scheme 87
Without ABS or CVT
The vehicle speed sensor provides a vehicle speed signal to the combination meter for speedometer indication.
With CVT, Without ABS
The TCM provides a vehicle speed signal to the combination meter via CAN communication lines.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (RPM). The ECM provides an engine speed signal to combination meter via CAN communication lines.
Scheme 88
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by the unified meter control unit and a variable resistor signal supplied
- To combination meter terminal 24
- Through fuel level sensor unit and fuel pump terminal 5
- Through fuel level sensor unit and fuel pump terminal 2
- From combination meter terminal 6.
ODO/TRIP METER
The vehicle speed signal and the memory signals from the meter memory circuit are processed by the combination meter and the mileage is displayed.
How to Change the Display
Refer to Owner's Manual for ODO/trip meter operating instructions.
Terminals and Reference Value for Combination Meter
TERMINALS AND REFERENCE VALUE FOR COMBINATION METER Terminal No. Wire color Item Condition Reference value (V) (Approx.) Ignition switch Operation or condition 1 L CAN-H - - - 2 P CAN-L - - - 3 G Vehicle speed signal output (2-pulse) ON Speedometer operated [When vehicle speed is approx. 40 km/h (25 MPH)] NOTE: Maximum voltage may be 5 V due to specifications (connected units). 4 SB Vehicle speed signal output (8-pulse) ON Speedometer operated [When vehicle speed is approx. 40 km/h (25 MPH)] NOTE: Maximum voltage may be 12 V due to specifications (connected units). 5 W Vehicle speed signal (without ABS or CVT) ON Speedometer operated [When vehicle speed is approx. 20 km/h (12 MPH)] 240 Hz 6 BR Fuel level sensor signal (+) - - Refer to " FUEL LEVEL SENSOR UNIT CHECK ". 8 P O/D OFF switch ON O/D OFF switch pressed 0 O/D OFF switch released Battery voltage 9 Y Seat belt buckle switch LH ON Unfastened (ON) 0 Fastened (OFF) Battery voltage 10 SB Parking Brake switch ON Parking brake applied 0 Parking brake released Battery voltage 11 LG Brake fluid level switch ON Brake fluid level low 0 Brake fluid level normal Battery voltage 12 BR Illumination control switch (+) - - Refer to " ILLUMINATION OPERATION BY LIGHTING SWITCH ". 13 B Illumination control switch (-) - - Refer to " ILLUMINATION OPERATION BY LIGHTING SWITCH ". 17 G Washer fluid level switch (Canada models) ON Washer fluid level low 0 Washer fluid level normal Battery voltage 21 B Ground - - 0 22 23 24 V Fuel level sensor ground (-) ON - 0 26 B Vehicle speed sensor ground (without ABS or CVT) ON - 0 27 G Battery power supply OFF - Battery voltage 28 SB Ignition switch ON or START ON - Battery voltage 29 GR Seat belt buckle switch RH ON Unfastened (ON) 0 Fastened (OFF) Battery voltage 30 G Stop lamp switch ON Brake pedal depressed Battery voltage Brake pedal released 0 31 V A/T N-range input (with A/T) ON Transmission gear selector lever in N position Battery voltage Transmission gear selector lever other than N position 0 32 W A/T P-range input (with A/T) ON Transmission gear selector lever in P position Battery voltage Transmission gear selector lever other than P position 0 33 Y A/T PN output (with A/T) ON Transmission gear selector lever in P or N position 0 Transmission gear selector lever other than P or N position Battery voltage 35 BR Engine coolant temperature signal output ON At idle [after warming up, approx. 80°C (176°F)] NOTE: The waveforms vary depending on engine coolant temperature. 38 L Generator ON Generator voltage low 0 Generator voltage normal Battery voltage
Scheme 89
Scheme 90
CONSULT-III Function (METER)
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
| METER diagnosis mode | Description |
|---|---|
| SELF-DIAG RESULTS | Displays combination meter self-diagnosis results. |
| DATA MONITOR | Displays combination meter input/output data in real time. |
| CAN DIAG SUPPORT MNTR | The result of transmit/receive diagnosis of CAN communication can be read. |
DIAGNOSTIC TEST MODE DESCRIPTION
CONSULT-III START PROCEDURE
Refer to " CONSULT-III START PROCEDURE ".
Display Item List
| CONSULT-III display | Malfunction |
|---|---|
| CAN COMM CIRC [U1000] | Malfunction is detected in CAN communication lines. CAUTION: Even when there is no malfunction on CAN communication system, malfunction may be misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about 2 seconds) or 10A fuse [No. 14, located in the fuse block (J/B)] is removed. |
| VEHICLE SPEED CIRC [B2205] | Malfunction is detected when an erroneous speed signal is input. CAUTION: Even when there is no malfunction on speed signal system, malfunctions may be misinterpreted when battery has low voltage (when maintaining 7-- 8 V for about 2 seconds). |
| CAUTION |
|---|
| Even when there is no malfunction on CAN communication system, malfunction may be misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about 2 seconds) or 10A fuse [No. 14, located in the fuse block (J/B)] is removed. |
| CAUTION |
|---|
| Even when there is no malfunction on speed signal system, malfunctions may be misinterpreted when battery has low voltage (when maintaining 7-- 8 V for about 2 seconds). |
DISPLAY ITEM LIST - SELF-DIAGNOSTIC RESULTS
Note. "TIME" indicates the following. 0: Indicates that a malfunction is detected at present. 1-63: Indicates that a malfunction was detected in the past. (Displays number of ignition switch OFF --> ON cycles after malfunction is detected. Self-diagnostic result is erased when "63" is exceeded.)
| Display item [Unit] | MAIN SIGNALS | SELECTION FROM MENU | Contents |
|---|---|---|---|
| SPEED METER [km/h] | X | X | The value of vehicle speed signal, which is input from ABS actuator and electric unit (control unit). |
| SPEED OUTPUT [km/h] | X | X | The value of vehicle speed signal, which is transmitted to each unit with CAN communication. |
| TACHO METER [RPM] | X | X | The value of engine speed signal, which is input from ECM. |
| W TEMP METER [°C] | X | X | The value of engine coolant temperature signal, which is input from ECM. |
| FUEL METER [lit.] | X | X | The value, which processes a resistance signal from fuel gauge. |
| DISTANCE [km] | X | X | The value, which is calculated by vehicle speed signal from ABS actuator and electric unit (control unit), fuel gauge and fuel consumption signal from ECM. |
| FUEL W/L [ON/OFF] | X | X | Indicates [ON/OFF] condition of low-fuel warning lamp. |
| C-ENG W/L [ON/OFF] | X | Indicates [ON/OFF] condition of malfunction indicator lamp (MIL). | |
| AIR PRES W/L | X | Indicates [ON/OFF] condition of low tire pressure warning lamp. | |
| SEAT BELT W/L | X | Indicates [ON/OFF] condition of seat belt warning lamp. | |
| BUZZER [ON/OFF] | X | X | Indicates [ON/OFF] condition of buzzer. |
| DOOR W/L [ON/OFF] | X | Indicates [ON/OFF] condition of door warning lamp. | |
| HI-BEAM IND [ON/OFF] | X | Indicates [ON/OFF] condition of high beam indicator lamp. | |
| TURN IND [ON/OFF] | X | Indicates [ON/OFF] condition of turn indicator. | |
| OIL W/L [ON/OFF] | X | Indicates [ON/OFF] condition of oil pressure warning lamp. | |
| ABS W/L [ON/OFF] | X | Indicates [ON/OFF] condition of ABS warning lamp. | |
| BRAKE W/L [ON/OFF] | X | Indicates [ON/OFF] condition of brake warning lamp. (1) | |
| KEY G W/L [ON/OFF] | X | Indicates [ON/OFF] condition of KEY warning lamp (green). | |
| KEY R W/L [ON/OFF] | X | Indicates [ON/OFF] condition of KEY warning lamp (red). | |
| KEY KNOB W/L [ON/OFF] | X | Indicates [ON/OFF] condition of LOCK warning lamp. | |
| PNP P SW [ON/OFF] | X | X | Indicates [ON/OFF] condition of inhibitor P switch. |
| PNP N SW [ON/OFF] | X | X | Indicates [ON/OFF] condition of inhibitor N switch. |
| O/D OFF SW [ON/OFF] | X | Indicates [ON/OFF] condition of O/D OFF switch. | |
| BRAKE SW [ON/OFF] | X | Indicates [ON/OFF] condition of parking brake switch. | |
| P RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of A/T or CVT shift P range indicator. |
| R RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of A/T or CVT shift R range indicator. |
| N RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of A/T or CVT shift N range indicator. |
| D RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of A/T or CVT shift D range indicator. |
| 2 RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of A/T shift 2 range indicator. |
| L RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of CVT shift L range indicator. |
| 1 RANGE IND [ON/OFF] | X | X | Indicates [ON/OFF] condition of A/T shift 1 range indicator. |
| CRUISE IND [ON/OFF] | X | Indicates [ON/OFF] condition of CRUISE indicator. | |
| SET IND [ON/OFF] | X | Indicates [ON/OFF] condition of SET indicator. | |
| O/D OFF W/L [ON/OFF] | X | Indicates [ON/OFF] condition of O/D OFF indicator lamp. | |
| E-4WD W/L [ON/OFF] | X | This item is not used for this model. "OFF" is always displayed. | |
| EPS W/L [ON/OFF] | X | Indicates [ON/OFF] condition of EPS warning lamp. | |
| NOTE: Some items are not available due to vehicle specification. (1) The monitor will indicate "OFF" even though the brake warning lamp is on if either of the following conditions exist. The parking brake is engaged The brake fluid level is low | |||
| NOTE |
|---|
| Some items are not available due to vehicle specification. (1) The monitor will indicate "OFF" even though the brake warning lamp is on if either of the following conditions exist. The parking brake is engaged The brake fluid level is low |
| (1) | The monitor will indicate "OFF" even though the brake warning lamp is on if either of the following conditions exist. |
DISPLAY ITEM LIST - DATA MONITOR
PRELIMINARY CHECK
- CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER Perform self-diagnosis of combination meter. Refer to " «OPERATION PROCEDURE»(ref-337635-S02021108292009080600000) ". Does self-diagnosis mode operate? YES >> GO TO 2. NO >> Check power supply and ground circuit of combination meter. Refer to " «POWER SUPPLY AND GROUND CIRCUIT INSPECTION»(ref-337635-S35246333152009080600000) ".
- CHECK COMBINATION METER (CONSULT-III) Select "METER" on CONSULT-III and perform self-diagnosis of combination meter. Refer to " «SELF-DIAGNOSTIC RESULTS»(ref-337635-S08049332002009080600000) ". Self-diagnostic results content No malfunction detected >> Refer to " «SYMPTOM CHART»(ref-337635-S10217087472009080600000) ". Malfunction detected >> Refer to " «DISPLAY ITEM LIST»(ref-337635-S06131679072009080600000) ".
- CHECK COMBINATION METER INPUT SIGNAL Start engine and select "METER" on CONSULT-III. Using "SPEED METER" on "DATA MONITOR", compare the value of "DATA MONITOR" with speedometer pointer of combination meter. OK or NG OK >> Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to " «SELF-DIAGNOSIS»(ref-337617-S13174347562009080600000) ". NG >> Replace combination meter. Refer to " «COMBINATION METER»(ref-337620-S00700295732009080600000) ".
Scheme 91
Scheme 92
- CHECK VEHICLE SPEED SENSOR CIRCUITS Remove vehicle speed sensor. Turn ignition switch ON. Rotate vehicle speed sensor while checking voltage between combination meter harness connector M24 terminals 5 and 26. VOLTAGE SPECIFICATION Terminals Voltage (Approx.) (+) (-) Connector Terminal Connector Terminal M24 5 M24 26 0.5 OK or NG OK >> Replace combination meter. Refer to " «COMBINATION METER»(ref-337620-S00700295732009080600000) ". NG >> GO TO 2.
- CHECK VEHICLE SPEED SENSOR Turn ignition switch OFF. Disconnect vehicle speed sensor connector. Check resistance between vehicle speed sensor terminals 1 and 2. RESISTANCE SPECIFICATION Terminals Resistance value (Approx.) (+) (-) Component Terminal Component Terminal Vehicle speed sensor 1 Vehicle speed sensor 2 250ohms OK or NG OK >> Check harness or connector between combination meter and vehicle speed sensor. NG >> Replace vehicle speed sensor.
- CHECK COMBINATION METER INPUT SIGNAL Start engine and select "METER" on CONSULT-III. Using "SPEED METER" on "DATA MONITOR", compare the value of "DATA MONITOR" with speedometer pointer of combination meter. OK or NG OK >> Perform TCM self-diagnosis. Refer to " «SELF-DIAGNOSTIC RESULT MODE»(ref-337628-S00236341512009080600000) ". NG >> Replace combination meter. Refer to " «COMBINATION METER»(ref-337620-S00700295732009080600000) ".
Fuel Gauge Fluctuates, Indicates Wrong Value, or Varies
- CHECK FUEL GAUGE FLUCTUATION Test drive vehicle to see if gauge fluctuates only during driving or at the instant of stopping. Does the indication value vary only during driving or at the at the instant of stopping? YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank. Condition is normal. NO >> Ask the customer about the situation when the symptom occurs in detail, and perform the trouble diagnosis.
Fuel Gauge Does Not Move to Full position
- OBSERVE FUEL GAUGE Does it take a long time for the pointer to move to FULL position? YES or NO YES >> GO TO 2. NO >> GO TO 3 .
- IDENTIFY FUELING CONDITION Was the vehicle fueled with the ignition switch ON? YES or NO YES >> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise, it will take a long time to move to FULL position because of the characteristic of the fuel gauge. NO >> GO TO 3.
- OBSERVE VEHICLE POSITION Is the vehicle parked on an incline? YES or NO YES >> Check the fuel level indication with vehicle on a level surface. NO >> GO TO 4.
- OBSERVE FUEL GAUGE POINTER During driving, does the fuel gauge pointer move gradually toward EMPTY position? YES or NO YES >> Check the components. Refer to " «FUEL LEVEL SENSOR UNIT CHECK»(ref-337635-S30759147902009080600000) ". NO >> The float arm may interfere or bind with any of the components in the fuel tank.
FUEL LEVEL SENSOR UNIT CHECK
For removal, refer to " REMOVAL AND INSTALLATION ".
Check Fuel Level Sensor Unit and Fuel Pump
Check resistance between terminals 2 and 5.
| Terminals | Float position mm (in) | Resistance value (ohms) (Approx.) | |||
|---|---|---|---|---|---|
| 2 | 5 | (1) | Full | 160 (8.07) | 6 |
| (1) | Empty | 20 (1.02) | 80 | ||
| (1) When float rod is in contact with stopper. | |||||
| (1) | When float rod is in contact with stopper. |
RESISTANCE SPECIFICATION
Scheme 93
COMBINATION METER
Refer to " COMBINATION METER ".
Scheme 94
Oil Pressure Warning Lamp Does Not Turn Off (Oil Pressure Is Normal)
Note. For oil pressure inspection, refer to " OIL PRESSURE CHECK ".
Scheme 95
Scheme 96
- CHECK OIL PRESSURE WARNING LAMP OPERATION Activate IPDM E/R auto active test. Refer to " «AUTO ACTIVE TEST»(ref-337618-S19901098922009080600000) ". Does oil pressure warning lamp blink? YES >> GO TO 2. NO >> GO TO 5 .
- CHECK IPDM E/R OUTPUT SIGNAL Turn ignition switch OFF. Disconnect oil pressure switch connector. Turn ignition switch ON. Check voltage between oil pressure switch harness connector and ground. VOLTAGE SPECIFICATION Terminals Voltage (Approx.) (+) (-) Oil pressure switch connector Terminal F32 1 Ground 12 V OK or NG OK >> GO TO 3. NG >> GO TO 4 .
- CHECK OIL PRESSURE SWITCH Turn ignition switch OFF. Check oil pressure switch. Refer to " «OIL PRESSURE SWITCH»(ref-337635-S11216549732009080600000) ". OK or NG OK >> Replace IPDM E/R. Refer to " «REMOVAL AND INSTALLATION OF IPDM E/R»(ref-337618-S28938113412009080600000) ". NG >> Replace oil pressure switch.
- CHECK OIL PRESSURE SWITCH CIRCUIT Turn ignition switch OFF. Disconnect IPDM E/R connector. Check continuity between IPDM E/R harness connector and ground. TERMINALS CONTINUITY REFERENCE IPDM E/R connector Terminal Ground Continuity E46 37 No OK or NG OK >> Replace IPDM E/R. Refer to " «REMOVAL AND INSTALLATION OF IPDM E/R»(ref-337618-S28938113412009080600000) ". NG >> Repair harness or connector.
- CHECK IPDM E/R (CONSULT-III) Perform self-diagnosis of IPDM E/R. Refer to " «SELF-DIAGNOSTIC RESULTS»(ref-337618-S42129180052009080600000) ". Self-diagnostic results content No malfunction detected >> Replace combination meter. Refer to " «COMBINATION METER»(ref-337620-S00700295732009080600000) ". Malfunction detected >> Check applicable parts, and repair or replace as necessary.
OIL PRESSURE SWITCH
Check continuity between oil pressure switch and ground.
| Condition | Oil pressure [kPa (bar, kg/cm 2 , psi)] | Continuity |
|---|---|---|
| Engine stopped | Less than 29 (0.3, 0.3, 4) | Yes |
| Engine running | More than 29 (0.3, 0.3, 4) | No |
TERMINALS CONTINUITY REFERENCE
Scheme 97
CVT Indicator Does Not Illuminate
- CHECK SEGMENT OF CVT INDICATOR Perform self-diagnosis of combination meter. Refer to " «OPERATION PROCEDURE»(ref-337635-S02021108292009080600000) ". Are all segments displayed? YES >> GO TO 2. NO >> Replace combination meter. Refer to " «COMBINATION METER»(ref-337620-S00700295732009080600000) ".
- CHECK COMBINATION METER (CONSULT-III) Connect CONSULT-III. Select "METER" on CONSULT-III, and perform self-diagnosis of combination meter. Refer to " «SELF-DIAGNOSTIC RESULTS»(ref-337635-S08049332002009080600000) ". Self-diagnostic results content No malfunction detected >> GO TO 3. Malfunction detected >> Check applicable parts, and repair or replace as necessary.
- CHECK COMBINATION METER INPUT SIGNAL Use "DATA MONITOR" of "METER" on CONSULT-III. Confirm each indication on the monitor when operating the CVT selector lever. SWITCH OPERATION AND OPERATION STATUS CONSULT-III display Switch operation Operation status P RANGE IND P range position ON Except for P range position OFF R RANGE IND R range position ON Except for R range position OFF N RANGE IND N range position ON Except for N range position OFF D RANGE IND D range position ON Except for D range position OFF L RANGE IND L range position ON Except for L range position OFF OK or NG OK >> Replace combination meter. Refer to " «COMBINATION METER»(ref-337620-S00700295732009080600000) ". NG >> GO TO 4.
- CHECK SELF-DIAGNOSIS RESULTS OF TCM Perform self-diagnosis of TCM. Refer to " «SELF-DIAGNOSTIC RESULT MODE»(ref-337628-S00236341512009080600000) ". OK or NG OK >> Check TCM input/output signal. Repair or replace malfunctioning part, if necessary. Refer to " «INPUT/OUTPUT SIGNAL OF TCM»(ref-337628-S12524746402009080600000) ". NG >> Check applicable part, and repair or replace as necessary.
Scheme 98
Power is supplied at all times
- Through 40A fusible link (letter g , located in the fuse and fusible link box)
- To BCM terminal 70
- Through 10A fuse [No. 8, located in the fuse block (J/B)]
- To BCM terminal 57
- Through 10A fuse [No. 13, located in the fuse block (J/B)]
- To combination meter terminal 27.
With ignition switch in the ON or START position, power is supplied
- Through 10A fuse [No. 6, located in the fuse block (J/B)]
- To BCM terminal 38
- Through 10A fuse [No. 3, located in the fuse block (J/B)]
- To combination meter terminal 28.
Ground is supplied
- To BCM terminal 67 and
- To combination meter terminals 21, 22 and 23
- Through grounds M57 and M61.
IGNITION KEY WARNING CHIME (WITHOUT INTELLIGENT KEY)
With the key inserted into the key switch, and the ignition switch in the OFF or ACC position, when driver's door is opened, the warning chime will sound.
Scheme 99
- BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with CAN communication line.
- When combination meter receives key warning signal, it sounds warning chime.
When Mechanical Key Is Used
With the key inserted into the key switch, and the ignition switch in the LOCK or ACC position, when driver's door is opened, the warning chime will sound.
Scheme 100
- BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with CAN communication line.
- When combination meter receives key warning signal, it sounds warning chime.
When Intelligent Key Is Carried With The Driver
Refer to " WARNING CHIME/BUZZER/LAMPS FUNCTION ".
LIGHT WARNING CHIME
The warning chime sounds, when driver's door is opened (door switch ON) with lighting switch ON and the ignition switch is in any position other than ON or START.
Note. BCM detected lighting switch in the 1st or 2nd position, refer to " COMBINATION SWITCH READING FUNCTION ".
Scheme 101
- BCM detects headlamps are illuminated, and sends light warning signal to combination meter with CAN communication lines.
- When the combination meter receives light warning signal, it sounds warning chime.
PARKING BRAKE WARNING CHIME
The parking brake warning chime sounds when the parking brake is applied and vehicle speed reaches approximately 2 km/h (1 MPH).
- The combination meter receives a parking brake applied signal from the parking brake switch.
- When the combination meter receives a vehicle speed signal from the ABS actuator and electric unit (control unit) (with ABS), vehicle speed sensor (without ABS or CVT) or the TCM (with CVT, without ABS), it sounds the buzzer.
Terminals and Reference Values for BCM
Refer to " TERMINALS AND REFERENCE VALUES FOR BCM ".
CONSULT-III Function (BCM)
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
| BCM diagnostic test item | Diagnostic mode | Description |
|---|---|---|
| Inspection by part | WORK SUPPORT | Supports inspections and adjustments. Commands are transmitted to the BCM for setting the status suitable for required operation, input/output signals are received from the BCM and received data is displayed. |
| DATA MONITOR | Displays BCM input/output data in real time. | |
| ACTIVE TEST | Operation of electrical loads can be checked by sending drive signal to them. | |
| SELF-DIAG RESULTS | Displays BCM self-diagnosis results. | |
| CAN DIAG SUPPORT MNTR | The result of transmit/receive diagnosis of CAN communication can be read. | |
| ECU PART NUMBER | BCM part number can be read. | |
| CONFIGURATION | Performs BCM configuration read/write functions. |
DIAGNOSTIC TEST MODES DESCRIPTION
| Monitored item | ALL SIGNALS | SELECTION FROM MENU | Contents |
|---|---|---|---|
| IGN ON SW | X | X | Indicates [ON/OFF] condition of ignition switch. |
| KEY ON SW | X | X | Indicates [ON/OFF] condition of key switch. |
| DOOR SW-DR | X | X | Indicates [ON/OFF] condition of front door switch LH. |
| LIGHT SW 1ST | X | X | Indicates [ON/OFF] condition of lighting switch. |
| BUCKLE SW | X | X | Indicates [ON/OFF] condition of seat belt buckle switch LH. |
DISPLAY ITEM LIST - DATA MONITOR
| Test item | Malfunction is detected when... |
|---|---|
| IGN KEY WARN ALM | This test is able to check key warning chime operation. |
| LIGHT WARN ALM | This test is able to check light warning chime operation. |
| SEAT BELT WARN TEST | This test is able to check seat belt warning chime operation. |
DISPLAY ITEM LIST - ACTIVE TEST
| Display item [Code] | Malfunction is detected when... |
|---|---|
| CAN communication [U1000] | Malfunction is detected in CAN communication. |
DISPLAY ITEM LIST - SELF-DIAG RESULTS
Note. If "CAN communication [U1000]" is indicated, after printing the monitor item, go to "LAN system". Refer to " CAN FUNDAMENTAL ".
FRONT DOOR SWITCH LH
Check continuity between terminal 2 and door switch case ground.
| Terminal | Condition | Continuity | |
|---|---|---|---|
| 2 | Door switch case ground | When door switch is released. | Yes |
| When door switch is pushed. | No | ||
TERMINALS CONTINUITY REFERENCE
Scheme 102
PARKING BRAKE SWITCH
Check continuity between terminal 1 and parking brake switch case ground.
| Terminal | Condition | Continuity | |
|---|---|---|---|
| 1 | Parking brake switch case ground | When parking brake is applied. | Yes |
| When parking brake is released. | No | ||
TERMINALS CONTINUITY REFERENCE