Nissan Maxima Service and Repair Manual: B260A ignition relay
Description
BCM turns ON the following relays to ignition power supply to each ECU when
the ignition switch is turned
ON.
- Ignition relay-1 (inside IPDM E/R)
- Ignition relay-2 (inside fuse block (J/B))
- Front blower motor relay
BCM checks any ignition relay ON request for consistency with the actual
ignition relay operation status.
DTC Logic
DTC DETECTION LOGIC
NOTE:
- If DTC B260A is displayed with DTC U1000, first perform the
trouble diagnosis for DTC U1000. Refer to
PCS-44, "DTC Logic".
- If DTC B260A is displayed with DTC U1010, first perform the
trouble diagnosis for DTC U1010. Refer to
PCS-45, "DTC Logic".
- If DTC B260A is displayed with DTC B261A, first perform the
trouble diagnosis for DTC B261A. Refer to
PCS-60, "DTC Logic".

DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON under the following conditions, and wait
for at least 2 seconds.
- CVT selector lever is in the P or N position.
- Release the brake pedal.
- Check "Self diagnostic result" with CONSULT.
Diagnosis Procedure
1.CHECK DATA MONITOR
- Turn ignition switch ON.
- Check IGN RLY1-REQ and IGN RLY status with CONSULT
2.CHECK CAN COMMUNICATION
Check CAN communication.
3.CHECK IGNITION RELAY-1 SIGNAL

- Turn ignition switch OFF.
- Check voltage between IPDM E/R harness connector and
ground.


- Turn ignition switch ON.
- Check voltage between IPDM E/R harness connector and
ground.

Description
BCM turns ON the following relays to ignition power supply to each ECU when
the ignition switch is turned
ON.
Ignition relay-1 (inside IPDM E/R)
Ignition relay-2 (inside fuse bl ...
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 ...
Other materials:
Wiring diagram
ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM
Wiring Diagram
...
P0452 evap control system pressure sensor
Description
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pressure
increases.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously ...
Basic inspection
COLLISION DIAGNOSIS
FOR USA AND CANADA
FOR USA AND CANADA : For Frontal Collision
FOR FRONTAL COLLISION: When SRS is activated in a collision
CAUTION: Due to varying models and option
levels, not all parts listed in the chart below apply to all vehicles.
WORK PROCEDURE
Before performing a ...