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:
L terminal circuit (open)
Description
The "L" terminal circuit controls the charge warning lamp. The charge warning
lamp turns ON when the ignition
switch is set to ON or START. When the generator is providing sufficient voltage
with the engine running,
the charge warning lamp turns OFF. If the charge warning lamp i ...
AV control unit
Reference Value
VALUES ON THE DIAGNOSIS TOOL
CONSULT data monitor item
TERMINAL LAYOUT
PHYSICAL VALUES
*1 With satellite radio
DTC Index
Self-diagnosis results display item
...
Wiring diagram
POWER WINDOW SYSTEM
Wiring Diagram
...