Infiniti EX35. Manual - part 1231

BCM (BODY CONTROL MODULE)

RF-49

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Fail-safe

INFOID:0000000003773252

FAIL-SAFE CONTROL BY DTC

BCM performs fail-safe control when any DTC is detected.

JCMWM1404GB

RF-50

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

Display contents of CONSULT

Fail-safe

Cancellation

B2013: ID DISCORD BCM-S/L

Inhibit engine cranking

Erase DTC

B2014: CHAIN OF S/L-BCM

Inhibit engine cranking

Erase DTC

B2190: NATS ANTENNA AMP

Inhibit engine cranking

Erase DTC

B2191: DIFFERENCE OF KEY

Inhibit engine cranking

Erase DTC

B2192: ID DISCORD BCM-ECM

Inhibit engine cranking

Erase DTC

B2193: CHAIN OF BCM-ECM

Inhibit engine cranking

Erase DTC

B2557: VEHICLE SPEED

Inhibit steering lock

When normal vehicle speed signals have been received from ABS 
actuator and electric unit (control unit) for 500 ms

B2560: STARTER CONT RELAY

Inhibit engine cranking

500 ms after the following CAN signal communication status has 
become consistent
• Starter control relay signal
• Starter relay status signal

B2601: SHIFT POSITION

Inhibit steering lock

500 ms after the following signal reception status becomes consis-
tent
• Selector lever P position switch signal
• P range signal (CAN)

B2602: SHIFT POSITION

Inhibit steering lock

5 seconds after the following BCM recognition conditions are ful-
filled
• Ignition switch is in the ON position
• Selector lever P position switch signal: Except P position (battery 

voltage)

• Vehicle speed: 4 km/h (2.5 MPH) or more

B2603: SHIFT POSI STATUS

Inhibit steering lock

500 ms after the following BCM recognition conditions are fulfilled
• Ignition switch is in the ON position
• Selector lever P position switch signal: Except P position (battery 

voltage)

• Selector lever P/N position signal: Except P and N positions (0 V)

B2604: PNP SW

Inhibit steering lock

500 ms after any of the following BCM recognition conditions is ful-
filled
• Status  1
- Ignition switch is in the ON position
- Selector lever P/N position signal: P and N position (battery volt-

age)

- P range signal or N range signal (CAN): ON
• Status  2
- Ignition switch is in the ON position
- Selector lever P/N position signal: Except P and N positions (0 V)
- P range signal and N range signal (CAN): OFF

B2605: PNP SW

Inhibit steering lock

500 ms after any of the following BCM recognition conditions is ful-
filled
• Ignition switch is in the ON position
- Power position: IGN
- Selector lever P/N position signal: Except P and N positions (0 V)
- Interlock/PNP switch signal (CAN): OFF
• Status  2
- Ignition switch is in the ON position
- Selector lever P/N position signal: P or N position (battery volt-

age)

- PNP switch signal (CAN): ON

B2606: S/L RELAY

Inhibit engine cranking

500 ms after the following CAN signal communication status has 
become consistent
• Steering lock relay signal (Request signal)
• Steering lock relay signal (Condition signal)

B2607: S/L RELAY

Inhibit engine cranking

500 ms after the following CAN signal communication status has 
become consistent
• Steering lock relay signal (Request signal)
• Steering lock relay signal (Condition signal)

BCM (BODY CONTROL MODULE)

RF-51

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HIGH FLASHER OPERATION

BCM detects the turn signal lamp circuit status by the current value.
BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn signal
lamp operating.
NOTE:
The blinking speed is normal while activating the hazard warning lamp.

DTC Inspection Priority Chart

INFOID:0000000003773253

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.

B2608: STARTER RELAY

Inhibit engine cranking

500 ms after the following signal communication status becomes 
consistent
• Starter motor relay control signal
• Starter relay status signal (CAN)

B2609: S/L STATUS

• Inhibit engine cranking
• Inhibit steering lock

When the following steering lock conditions agree
• BCM steering lock control status
• Steering lock condition No. 1 signal status
• Steering lock condition No. 2 signal status

B260A: IGNITION RELAY

Inhibit engine cranking

500 ms after the following conditions are fulfilled
• IGN relay (IPDM E/R) control signal: OFF (Battery voltage)
• Ignition ON signal (CAN to IPDM E/R): OFF (Request signal)
• Ignition ON signal (CAN from IPDM E/R): OFF (Condition signal)

B260F: ENG STATE SIG LOST

Maintains the power supply 
position attained at the time 
of DTC detection

When any of the following conditions is fulfilled
• Power position changes to ACC
• Receives engine status signal (CAN)

B2612: S/L STATUS

• Inhibit engine cranking
• Inhibit steering lock

When any of the following conditions is fulfilled
• Steering lock unit status signal (CAN) is received normally
• The BCM steering lock control status matches the steering lock 

status recognized by the steering lock unit status signal (CAN 
from IPDM E/R)

B2617: STARTER RELAY CIRC

Inhibit engine cranking

1 second after the starter motor relay control inside BCM becomes 
normal

B2618: BCM

Inhibit engine cranking

1 second after the ignition relay (IPDM E/R) control inside BCM be-
comes normal

B2619: BCM

Inhibit engine cranking

1 second after the steering lock unit power supply output control in-
side BCM becomes normal

B261E: VEHICLE TYPE

Inhibit engine cranking

BCM initialization

B26E1: ENG STATE NO RECIV

Inhibit engine cranking

When any of the following conditions is fulfilled
• Power position changes to ACC
• Receives engine status signal (CAN)

B26E9: S/L STATUS

• Inhibit engine cranking
• Inhibit steering lock

When BCM transmits the LOCK request signal to steering lock unit, 
and receives LOCK response signal from steering lock unit, the fol-
lowing conditions is fulfilled
• Steering condition No. 1 signal: LOCK (0V)
• Steering condition No. 2 signal: LOCK (Battery voltage)

Display contents of CONSULT

Fail-safe

Cancellation

Priority

DTC

1

B2562: LOW VOLTAGE

2

• U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)

3

• B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM

RF-52

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BCM (BODY CONTROL MODULE)

4

• B2013: ID DISCORD BCM-S/L
• B2014: CHAIN OF S/L-BCM
• B2553: IGNITION RELAY
• B2555: STOP LAMP 
• B2556: PUSH-BTN IGN SW
• B2557: VEHICLE SPEED
• B2560: STARTER CONT RELAY
• B2601: SHIFT POSITION
• B2602: SHIFT POSITION
• B2603: SHIFT POSI STATUS
• B2604: PNP SW
• B2605: PNP SW
• B2606: S/L RELAY
• B2607: S/L RELAY
• B2608: STARTER RELAY
• B2609: S/L STATUS
• B260A: IGNITION RELAY
• B260B: STEERING LOCK UNIT
• B260C: STEERING LOCK UNIT
• B260D: STEERING LOCK UNIT
• B260F: ENG STATE SIG LOST
• B2612: S/L STATUS
• B2614: ACC RELAY CIRC
• B2615: BLOWER RELAY CIRC
• B2616: IGN RELAY CIRC
• B2617: STARTER RELAY CIRC
• B2618: BCM
• B2619: BCM
• B261A: PUSH-BTN IGN SW
• B261E: VEHICLE TYPE
• B26E1: ENG STATE NO RECIV
• B26E9: S/L STATUS
• B26EA: KEY REGISTRATION
• C1729: VHCL SPEED SIG ERR
• U0415: VEHICLE SPEED SIG

5

• C1704: LOW PRESSURE FL
• C1705: LOW PRESSURE FR
• C1706: LOW PRESSURE RR
• C1707: LOW PRESSURE RL
• C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL
• C1734: CONTROL UNIT

6

• B2621: INSIDE ANTENNA 
• B2622: INSIDE ANTENNA 
• B2623: INSIDE ANTENNA 

Priority

DTC