Nissan Altima 2007-2012 Service Manual: B2608 starter relay
Description
Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.
DTC Logic
DTC DETECTION LOGIC
NOTE: • If DTC B2608 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-235, "DTC Logic".
• If DTC B2608 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-236, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Press the push-button ignition switch under the following conditions.
- CVT selector lever is in the P or N position.
- Depress the brake pedal.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected? YES >> Refer to SEC-290, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
1.CHECK STARTER RELAY
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground under the following condition.
Is the measurement value within the specification? YES >> GO TO 3
NO >> GO TO 2
2.CHECK STARTER RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector M21 and IPDM E/R harness connector E17.
3. Check continuity between IPDM E/R harness connector and BCM harness connector.
4. Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation".
NO >> Repair harness or connector.
3.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> Inspection End.
B2607 steering lock relay
Description
BCM requests to IPDM E/R to supply power to electronic steering column lock.
IPDM E/R sends status of
electronic steering column lock back to BCM.
DTC Logic
DTC DETECTION LOGIC
NOT ...
B2609 steering status
Description
There are 2 switches in the electronic steering column lock (steering
lock/unlock switch 1 and 2). BCM compares
those two switches conditions to judge the present steering status.
DT ...
Other materials:
B2557 vehicle speed
Description
BCM receives the 2 vehicle speed signals via CAN communication. One signal is
transmitted by the “unified
meter”. Another signal is transmitted by “ABS actuator and electric unit
(control unit)”. BCM compares both
signals to detect the vehicle speed.
DTC Logic
DTC DETEC ...
Replacement operations
Description
This section is prepared for technicians who have attained a high level of
skill and experience in repairing collision-
damaged vehicles and also use modern service tools and equipment. Persons
unfamiliar with body
repair techniques should not attempt to repair collision-damaged ...
U1212 DVD-ROM data forward
Description
Refer to AV-240, "System Description".
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.CHECK DVD-ROM
Check DVD-ROM for dirt, scratches and warpage.
Is the DVD-ROM clean and undamaged?
YES >> Replace AV control unit. Refer to AV-437, "Removal and ...