B2193

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)


B2193 CHAIN OF BCM-ECM

Self-diagnostic results:
"CHAIN OF BCM-ECM" displayed on CONSULT-III screen
First perform the "SELF-DIAG RESULTS" in "BCM" with CONSULT-III, then perform the trouble diagnosis of malfunction system indicated "SELF-DIAG RESULTS" of "BCM".
1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS "CHAIN OF BCM-ECM" displayed on CONSULT-III screen.

NOTE:
In rare case, "CHAIN OF BCM-ECM" might be stored during key registration procedure, even if the system is not malfunctioning.
Is CONSULT-III screen displayed?
Yes - GO TO 2.
No - Refer to Consult-III Functions (BCM-IMMU).
2.CHECK POWER SUPPLY CIRCUIT FOR BCM





Check voltage between BCM and ground with CONSULT-III or tester.






OK or NG
OK - GO TO 3.
NG - Check the following.
- 50A fusible link (letter F, located in the fuse and fusible link box)
- 10A fuse [No.21, located in the fuse block (J/B)]
- 15A fuse [No. 1, located in the fuse block (J/B)]
- Harness for open or short between fusible link and BCM
- Harness for open or short between fuse and BCM
3.CHECK GROUND CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector.





3. Check continuity between BCM connector and ground.





OK or NG
OK - GO TO 4.
NG - Repair or replace harness.
4.REPLACE BCM
1. Replace BCM
2. Perform initialization with CONSULT-III.
For initialization, refer to "CONSULT-III Operation Manual NATS-IVIS/NVIS".
Does the engine start?
Yes - BCM is malfunctioning.
- Replace BCM.
- Perform initialization with CONSULT-III
- For initialization, refer to "CONSULT-III Operation Manual NATS-IVIS/NVIS"
No - ECM is malfunctioning.
- Replace ECM.
- Perform initialization or re-communicating function
- For initialization, refer to "CONSULT-III Operation Manual NATS-IVIS/NVIS"
- For re-communicating function, refer to Programming and Relearning