Nissan Altima 2007-2012 Service Manual: B2616 ignition relay circuit

Description

BCM controls the various electrical components and simultaneously supplies power according to the power supply position.

BCM checks the power supply position internally.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1. PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON under the following conditions, and wait for at least 1 second.

- CVT selector lever is in the P or N position

- Release brake pedal

2. Check “Self diagnostic result” with CONSULT-III.

Is DTC detected? YES >> Go to PCS-71, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1. CHECK IGNITION RELAY POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect ignition relay.

3. Check voltage between ignition relay harness connector and ground under the following conditions.

Is the inspection result normal? YES >> GO TO 3

NO >> GO TO 2

2. CHECK IGNITION RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM harness connector.

3. Check continuity between ignition relay harness connector (A) and BCM harness connector (B).

4. Check continuity between ignition relay harness connector (A) and ground.

Is the inspection result normal? YES >> GO TO 6

NO >> Repair or replace harness.

3. CHECK IGNITION RELAY GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between ignition relay harness connector and ground.

Is the inspection result normal? YES >> GO TO 4

NO >> Repair or replace harness.

4. CHECK IGNITION RELAY POWER SUPPLY CIRCUIT-2

Check voltage between ignition relay harness connector and ground.

Is the inspection result normal? YES >> GO TO 5

Is the inspection result normal? YES >> GO TO 5

NO >> Repair or replace harness.

5. CHECK IGNITION RELAY

Refer to PCS-73, "Component Inspection (Ignition Relay)".

Is the inspection result normal? YES >> GO TO 6

NO >> Replace ignition relay.

6. CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

Component Inspection (Ignition Relay)

1. CHECK IGNITION RELAY

1. Turn ignition switch OFF.

2. Remove ignition relay.

3. Check the continuity between ignition relay terminals under the following conditions.

Is the inspection result normal? YES >> Inspection End.

NO >> Replace ignition relay.

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