DETAILED FLOW
- OBTAIN INFORMATION ABOUT SYMPTOM Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred. GO TO 2
- CHECK SYMPTOM Check the symptom based on the information obtained from the customer. Check to see if any other malfunctions are present. GO TO 3
- CHECK CONSULT-III SELF-DIAGNOSIS RESULTS Connect CONSULT-III and perform "SELF-DIAGNOSIS". Refer to " «CONSULT-III FUNCTION (METER/M&A)»(ref-382184-S12291783392011011400000) ". Are self-diagnosis results normal? YES: GO TO 4 NO: Repair or replace the malfunctioning parts, GO TO 5
- NARROW DOWN MALFUNCTIONING PARTS THROUGH SYMPTOM DIAGNOSIS Perform symptom diagnosis and repair or replace the identified malfunctioning parts. GO TO 5
- FINAL CHECK Check that the warning buzzer in the combination meter operates normally. Does it operate normally? YES: Inspection End. NO: GO TO 1
Scheme 65
COMBINATION METER
- The buzzer for warning chime system is installed in the combination meter.
- The buzzer sounds when the combination meter receives a buzzer output signal from each unit.
BCM
BCM receives signals from various units and transmits a buzzer output signal to the combination meter with CAN communication line if it judges that the warning buzzer should be activated.
BCM warning function list
| Warning functions | Signal name |
|---|---|
| Light reminder warning chime | * Lighting switch position signal * Door switch signal |
| Seat belt warning chime | Seat belt buckle switch signal |
| Key warning chime | * Key switch signal * Door switch signal |
BCM WARNING FUNCTION LIST REFERENCE
Scheme 66
| Unit | Description |
|---|---|
| Combination meter | Receives the seat belt buckle switch signal from the seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) and transmits it to BCM with CAN communication line. Receives a buzzer output signal from BCM with CAN communication line. |
| BCM | Transmits signals provided by various units to the combination meter with CAN communication line. |
| Key switch and ignition knob switch (with Intelligent Key) | Transmits key switch signal to BCM. |
| Key switch and key lock solenoid (without Intelligent Key) | Transmits key switch signal to BCM. |
| Seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) | Transmits a seat belt buckle switch signal to the combination meter. |
| Combination switch (Lighting switch) | Transmits the lighting switch position signal to BCM. |
| Front door switch LH | Transmits the door switch signal to BCM. |
COMPONENT DESCRIPTION
Scheme 67
WARNING CANCEL CONDITIONS
Warning is canceled if any of the following conditions is fulfilled.
- Lighting switch OFF
- Ignition switch ON
- Front door switch LH is OFF
Scheme 68
Cancels the warning if any of the following conditions is fulfilled.
- Ignition switch OFF
- Seat belt buckle switch LH is OFF (driver seat belt fastened)
Scheme 69
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.
- 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 the warning chime.
WHEN INTELLIGENT KEY IS CARRIED WITH THE DRIVER
Refer to " WORK FLOW ".
Scheme 70
CONSULT-III Function (METER/M&A)
CONSULT-III can display each diagnostic item using the diagnostic test modes shown in table.
| METER/M&A 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 MODES REFERENCE
SELF-DIAG RESULTS
Display Item List
Refer to " DTC INDEX ".
DATA MONITOR
Display Item List
Scheme 71
Scheme 72
Scheme 73
Note. Some items are not available due to vehicle specification.
- * 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
| Monitor Item [Unit] | Description |
|---|---|
| DOOR SW-DR [ON/OFF] | Indicates condition of front door switch LH. |
| IGN ON SW [ON/OFF] | Indicates condition of ignition switch ON position. |
| KEY ON SW [ON/OFF] | Indicates condition of key switch. |
| LIGHT SW 1ST [ON/OFF] | Indicates condition of combination switch. |
| BUCKLE SW [ON/OFF] | Indicates condition of seat belt buckle switch. |
DATA MONITOR REFERENCE
Component Function Check
- CHECK OPERATION OF METER BUZZER Select "BUZZER" of "BCM" on CONSULT-III. Perform "LIGHT WARN ALARM" of "ACTIVE TEST" Does meter buzzer activate? YES: Inspection End. NO: Replace combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-382184-S22083316782011011400000) ".
- CHECK COMBINATION METER INPUT SIGNAL Select "DATA MONITOR" for "METER/M&A" and check the "SEAT BELT W/L" monitor value. SEAT BELT W/L When seat belt is fastened : OFF When seat belt is unfastened : ON Inspection End.
Scheme 74
Scheme 75
Scheme 76
- CHECK COMBINATION METER INPUT SIGNAL Turn ignition switch ON. Check voltage between combination meter harness connector M24 terminal 27 and ground. 27 - Ground When driver seat belt is fastened : Approx. 12V When driver seat belt is unfastened : Approx. 0V Is the inspection result normal? YES: Replace combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-382184-S22083316782011011400000) ". NO: GO TO 2
- CHECK SEAT BELT BUCKLE SWITCH CIRCUIT Turn ignition switch OFF. Disconnect combination meter and seat belt buckle pre-tensioner assembly LH (seat belt buckle switch). Check continuity between combination meter harness connector M24 (B) terminal 27 and seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) harness connector B74 (A) terminal 1. 27 - 1 : Continuity should exist. Check continuity between combination meter harness connector M24 (B) terminal 27 and ground. 27 - Ground : Continuity should not exist. Is the inspection result normal? YES: GO TO 3 NO: Repair or replace harness.
- CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT Check continuity between seat belt buckle pre-tensioner assembly LH (seat belt buckle switch) harness connector B74 terminal 2 and ground. 2 - Ground : Continuity should exist. Is the inspection result normal? YES: Inspection End. NO: Repair or replace harness.
Scheme 77
- CHECK SEAT BELT BUCKLE SWITCH Turn ignition switch OFF. Disconnect the seat belt buckle pre-tensioner assembly LH (seat belt buckle switch). Check continuity between terminals 1 and 2. 1- 2 When seat belt is fastened : Continuity should not exist. When seat belt is unfastened : Continuity should exist. Is the inspection result normal? YES: Inspection End. NO: Replace the seat belt buckle pre-tensioner assembly LH (seat belt buckle switch).
- CHECK BCM INPUT SIGNAL Select "DATA MONITOR" for "BCM" and check the "KEY ON SW" monitor value. KEY ON SW When key is inserted into key cylinder : ON When key is removed from key cylinder : OFF Inspection End.
Scheme 78
Scheme 79
Scheme 80
- CHECK FUSE Check if the key switch and ignition knob switch 10A fuse (No. 62, located in the fuse and relay box) is blown. Is the fuse blown? YES: Be sure to repair the cause of malfunction before installing new fuse. NO: GO TO 2
- CHECK BCM INPUT SIGNAL Check voltage between BCM harness connector and ground. VOLTAGE SPECIFICATION Terminals Condition Voltage (Approx.) (+) (-) BCM connector Terminal M18 37 Ground Key is inserted Battery voltage Key is removed 0 Is the inspection result normal? YES: Inspection End. NO: GO TO 3
- CHECK KEY SWITCH CIRCUIT Disconnect BCM and key switch and ignition knob switch. Check continuity between BCM harness connector M18 and key switch and ignition knob switch harness connector M12. CONTINUITY SPECIFICATION A B Continuity Connector Terminal Connector Terminal M18 (A) 37 M12 (B) 4 Yes Check continuity between BCM harness connector M18 and ground. CONTINUITY SPECIFICATION A Ground Continuity Connector Terminal M18 (A) 37 No Is the inspection result normal? YES: GO TO 4 NO: Repair or replace harness.
- CHECK KEY SWITCH POWER SUPPLY CIRCUIT Check voltage between key switch and ignition knob switch harness connector and ground. VOLTAGE SPECIFICATION Terminals Voltage (Approx.) (+) (-) Key switch and ignition knob switch connector Terminal M12 3 Ground Battery voltage Is the inspection result normal? YES: Replace key switch and ignition knob switch. NO: Repair or replace harness.
Scheme 81
- CHECK KEY SWITCH Turn ignition switch OFF. Disconnect key switch and ignition knob switch. Check continuity between key switch and ignition knob switch terminals 3 and 4. 3 - 4 When key is inserted into key cylinder : Continuity should exist. When key is removed from key cylinder : Continuity should not exist. Is the inspection result normal? YES: Inspection End. NO: Replace key switch and ignition knob switch.
- CHECK BCM INPUT SIGNAL Select "DATA MONITOR" for "BCM" and check the "KEY ON SW" monitor value. KEY ON SW When key is inserted into key cylinder : ON When key is removed from key cylinder : OFF Inspection End.
Scheme 82
Scheme 83
- CHECK FUSE Check if the key switch and key lock solenoid 10A fuse [No. 3, located in the fuse block (J/B)] is blown. Is the fuse blown? YES: Be sure to repair the cause of malfunction before installing new fuse. NO: GO TO 2
- CHECK BCM INPUT SIGNAL Check voltage between BCM harness connector and ground. VOLTAGE SPECIFICATION Terminals Condition Voltage (Approx.) (+) (-) BCM connector Terminal M18 37 Ground Key is inserted Battery voltage Key is removed 0 Is the inspection result normal? YES: Inspection End. NO: GO TO 3
- CHECK KEY SWITCH CIRCUIT Disconnect BCM and key switch and key lock solenoid. Check continuity between BCM harness connector M18 and key switch and key lock solenoid harness connector M27. CONTINUITY SPECIFICATION A B Continuity Connector Terminal Connector Terminal M18 37 M27 4 Yes Check continuity between BCM harness connector M18 and ground. CONTINUITY SPECIFICATION A Ground Continuity Connector Terminal M18 37 No Is the inspection result normal? YES: GO TO 4 NO: Repair or replace harness.
- CHECK KEY SWITCH POWER SUPPLY CIRCUIT Check voltage between key switch and key lock solenoid harness connector and ground. VOLTAGE SPECIFICATION Terminals Voltage (Approx.) (+) (-) Key switch and key lock solenoid Terminal M27 3 Ground Battery voltage Is the inspection result normal? YES: Replace key switch and key lock solenoid. NO: Repair or replace harness.
Scheme 84
- CHECK KEY SWITCH Turn ignition switch OFF. Disconnect key switch and key lock solenoid. Check continuity between key switch and key lock solenoid terminals 3 and 4. 3 - 4 When key is inserted into key cylinder : Continuity should exist. When key is removed from key cylinder : Continuity should not exist. Is the inspection result normal? YES: Inspection End. NO: Replace key switch and key lock solenoid.
Scheme 85
PHYSICAL VALUES
CONNECTOR TERMINAL REFERENCE Terminal Wire color Item Condition Reference value (V) (Approx.) Ignition switch Operation or condition 1 O Ignition switch ACC or ON - - Battery voltage 2 P Air bag warning lamp input ON Air bag warning lamp ON 4 Air bag warning lamp OFF 0 3 BR CK SUSP warning lamp input - CK SUSP warning lamp ON 0 CK SUSP warning lamp OFF Battery voltage 8 P Battery power supply - - Battery voltage 9 B Ground - - 0 11 L CAN-H - - - 12 P CAN-L - - - 15 Y/L Fuel level sensor signal - - Refer to " FUEL GAUGE : SYSTEM DESCRIPTION ". 16 B/P Fuel level sensor ground ON - 0 18 P/B Brake fluid level switch ON Brake fluid level low 0 Brake fluid level normal Battery voltage 23 G Parking brake switch ON Parking brake applied 0 Parking brake released Battery voltage 24 O/L Ignition switch ON or START ON - Battery voltage 27 O/B Seat belt buckle switch LH ON Unfastened (ON) 0 Fastened (OFF) Battery voltage 28 G/O Security indicator input OFF Security indicator ON 0 Security indicator OFF Battery voltage 29 W/R Vehicle speed signal output (8-pulse) ON Speedometer operated [When vehicle speed is approx. 40 km/h (25 MPH)] NOTE: Maximum voltage may be 12V due to specifications (connected units). 37 W/L Washer fluid level switch ON Washer fluid level low 0 Washer fluid level normal Battery voltage 41 P/L Seat belt buckle switch RH ON Unfastened (ON) 0 Fastened (OFF) Battery voltage 45 BR/W Generator ON Generator voltage low 0 Generator voltage normal Battery voltage 50 BR Illumination output - - Refer to " SYSTEM DESCRIPTION ". 52 B Ground - - 0
Scheme 86
Fail Safe
The combination meter performs a fail-safe operation for the functions listed below when communication is lost.
| Function | Specifications | |
|---|---|---|
| Speedometer | Zero indication. | |
| Tachometer | ||
| Fuel gauge | ||
| Engine coolant temperature gauge | ||
| Engine oil pressure gauge | ||
| Voltage gauge | ||
| A/T oil temperature gauge | ||
| Illumination control | Meter illumination | Change to nighttime mode when communication is lost. |
| Segment LCD | Odometer | Freeze current indication. |
| A/T position | Display turns off. | |
| Buzzer | Buzzer turns off. | |
| Warning lamp/indicator lamp | ABS warning lamp | Lamp turns on when communication is lost. |
| Brake warning lamp | ||
| VDC OFF indicator lamp | ||
| SLIP indicator lamp | ||
| A/T CHECK warning lamp | Lamp turns off when communication is lost. | |
| Oil pressure/coolant temperature warning lamp | ||
| Malfunction indicator lamp | ||
| Master warning lamp | ||
| Air bag warning lamp | ||
| High beam indicator | ||
| Turn signal indicator lamp | ||
| Intelligent Key system warning lamp | ||
| Driver and passenger seat belt warning lamp | Lamp turns off when disconnected. | |
| Charge warning lamp | ||
| Security indicator lamp | ||
| 4WD indicator lamp | ||
| ATP indicator lamp | ||
| CK SUSP warning lamp | ||
| Low tire pressure warning lamp | Lamp will flash every second for 1 minute and then stay on continuously thereafter. | |
FAIL-SAFE OPERATION CHART
CONNECTOR TERMINAL REFERENCE Terminal Wire color Signal name Signal input/output Measuring condition Reference value or waveform (Approx.) Ignition switch Operation or condition 1 BR/W Ignition keyhole illumination Output OFF Door is locked (SW OFF) Battery voltage Door is unlocked (SW ON) 0V 2 SB Combination switch input 5 Input ON Lighting, turn, wiper OFF Wiper dial position 4 3 G/Y Combination switch input 4 Input ON Lighting, turn, wiper OFF Wiper dial position 4 4 Y Combination switch input 3 Input ON Lighting, turn, wiper OFF Wiper dial position 4 5 G/B Combination switch input 2 Input ON Lighting, turn, wiper OFF Wiper dial position 4 6 V Combination switch input 1 9 GR/R Rear window defogger switch Input ON Rear window defogger switch ON 0V Rear window defogger switch OFF 5V 10 G Hazard lamp flash Input OFF ON (opening or closing) 0V OFF (other than above) Battery voltage 11 O Ignition switch (ACC or ON) Input ACC or ON Ignition switch ACC or ON Battery voltage 12 R/L Front door switch RH Input OFF ON (open) 0V OFF (closed) Battery voltage 13 GR Rear door switch RH Input OFF ON (open) 0V OFF (closed) Battery voltage 15 L/W Tire pressure warning check connector Input OFF - 5V 18 P Remote keyless entry receiver and optical sensor (ground) Output OFF - 0V 19 V/W Remote keyless entry receiver (power supply) Output OFF Ignition switch OFF 20 G/W Remote keyless entry receiver (signal) Input OFF Stand-by (keyfob buttons released) When remote keyless entry receiver receives signal from keyfob (keyfob buttons pressed) 21 G NATS antenna amp. Input OFF --> ON Ignition switch (OFF --> ON) Just after turning ignition switch ON: Pointer of tester should move for approx. 1 second, then return to battery voltage. 22 W/V BUS - - Ignition switch ON or power window timer operates 23 G/O Security indicator lamp Output OFF Goes OFF --> illuminates (Every 2.4 seconds) Battery voltage --> 0V 25 BR NATS antenna amp. Input OFF --> ON Ignition switch (OFF --> ON) Just after turning ignition switch ON: Pointer of tester should move for approx. 1 second, then return to battery voltage. 26 Y/L Rear wiper auto stop switch 2 Input ON Rise up position (rear wiper arm on stopper) 0V A Position (full clockwise stop position) 0V Forward sweep (counterclockwise direction) Fluctuating B Position (full counterclockwise stop position) Battery voltage Reverse sweep (clockwise direction) Fluctuating 27 W/R Compressor ON signal Input ON A/C switch OFF 5V A/C switch ON 0V 28 L/R Front blower monitor Input ON Front blower motor OFF Battery voltage Front blower motor ON 0V 29 W/B Hazard switch Input OFF ON 0V OFF 5V 32 R/G Combination switch output 5 Output ON Lighting, turn, wiper OFF Wiper dial position 4 33 R/Y Combination switch output 4 Output ON Lighting, turn, wiper OFF Wiper dial position 4 34 L Combination switch output 3 Output ON Lighting, turn, wiper OFF Wiper dial position 4 35 O/B Combination switch output 2 Output ON Lighting, turn, wiper OFF Wiper dial position 4 36 R/W Combination switch output 1 37 (1) B/R Key switch and ignition knob switch Input OFF Intelligent Key inserted Battery voltage Intelligent Key inserted 0V 37 (2) B/R Key switch and key lock solenoid Input OFF Key inserted Battery voltage Key inserted 0V 38 W/L Ignition switch (ON) Input ON - Battery voltage 39 L CAN-H - - - - 40 P CAN-L - - - - 42 GR Glass hatch ajar switch Input ON Glass hatch open 0 Glass hatch closed Battery 43 R/B Back door switch (without power back door) or back door latch (door ajar switch) (with power back door) Input OFF ON (open) 0V OFF (closed) Battery voltage 44 O Rear wiper auto stop switch 1 Input ON Rise up position (rear wiper arm on stopper) 0V A Position (full clockwise stop position) Battery voltage Forward sweep (counterclockwise direction) Fluctuating B Position (full counterclockwise stop position) 0V Reverse sweep (clockwise direction) Fluctuating 47 SB Front door switch LH Input OFF ON (open) 0V OFF (closed) Battery voltage 48 R/Y Rear door switch LH Input OFF ON (open) 0V OFF (closed) Battery voltage 49 R Cargo lamp Output OFF Any door open (ON) 0V All doors closed (OFF) Battery voltage 51 G/Y Trailer turn signal (right) Output ON Turn right ON 52 G/B Trailer turn signal (left) Output ON Turn left ON 54 Y Rear wiper output circuit 2 Input ON Rise up position (rear wiper arm on stopper) 0V A Position (full clockwise stop position) 0V Forward sweep (counterclockwise direction) 0V B Position (full counterclockwise stop position) Battery voltage Reverse sweep (clockwise direction) Battery voltage 55 SB Rear wiper output circuit 1 Output ON OFF 0 ON Battery voltage 56 R/G Battery saver output Output OFF 30 minutes after ignition switch is turned OFF 0V ON - Battery voltage 57 Y/R Battery power supply Input OFF - Battery voltage 58 W/R Optical sensor Input ON When optical sensor is illuminated 3.1V or more When optical sensor is not illuminated 0.6V or less 59 G Front door lock assembly LH actuator (unlock) Output OFF OFF (neutral) 0V ON (unlock) Battery voltage 60 G/B Turn signal (left) Output ON Turn left ON 61 G/Y Turn signal (right) Output ON Turn right ON 62 R/W Step lamp LH and RH Output OFF ON (any door open) 0V OFF (all doors closed) Battery voltage 63 L Interior room/map lamp Output OFF Any door switch ON (open) 0V OFF (closed) Battery voltage 65 V All door lock actuators (lock) Output OFF OFF (neutral) 0V ON (lock) Battery voltage 66 G/Y Front door lock actuator RH, rear door lock actuators LH/RH and back door lock actuator (unlock) Output OFF OFF (neutral) 0V ON (unlock) Battery voltage 67 B Ground Input ON - 0V 68 W/L Power window power supply (RAP) Output - Ignition switch ON Battery voltage Within 45 seconds after ignition switch OFF Battery voltage More than 45 seconds after ignition switch OFF 0V When front door LH or RH is open or power window timer operates 0V 69 W/R Power window power supply Output - - Battery voltage 70 W/B Battery power supply Input OFF - Battery voltage (1) With Intelligent Key system (2) With remote keyless entry system
Scheme 87
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Scheme 89
Scheme 90
Scheme 91
Scheme 92
Scheme 93
Fail-safe index
BCM performs fail-safe control when any DTC listed below is detected.
| Display contents of CONSULT | Fail-safe | Cancellation |
|---|---|---|
| U1000 CAN COMM CIRCUIT | Inhibit engine cranking | When the BCM re-establishes communication with the other modules. |
FAIL-SAFE INDEX
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
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 SRS AIRBAG article and SEAT BELTS article.
| 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 SRS AIRBAG . Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
| WARNING | When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service. |
PRECAUTION NECESSARY FOR STEERING WHEEL ROTATION AFTER BATTERY DISCONNECT
Note. This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYSTEM). Remove and install all control units after disconnecting both battery cables with the ignition knob in the "LOCK" position. Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results. For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mechanism is adopted on the key cylinder. For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible. If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation.