Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
Models without automatic drive positioner
ECM
Harness connector E30
Harness connector M1
Models with automatic drive positioner
ECM
Harness connector E29
Harness connector B10
2.CHECK HARNESS FOR OPEN CIRCUIT
Disconnect the connector of ECM.
Check the resistance between the ECM harness connector terminals.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to EC-157, "Diagnosis Procedure".
Is the inspection result normal?
Main line between A-bag and ABS circuit
ADP branch line circuitServicing air conditioner
The air conditioner system in your NISSAN vehicle
is charged with a refrigerant designed with
the environment in mind.
This refrigerant does not harm the earth's
ozone layer.
Special charging equipment and lubricant is required
when servicing your NISSAN air conditioner.
Using improper refr ...
Diagnosis and repair workflow
Work Flow
OVERALL SEQUENCE
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred).
2.CHECK DTC WITH BCM AND IPDM E/R
Check "Self Diagnostic Result" with CONSULT.
Perform ...
ECU diagnosis information
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
Fail Safe
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs
fail-safe control. After CA ...