Nissan Maxima Service and Repair Manual: ECU diagnosis information

Door switch

Description Detects door open/close condition. Component Function Check 1.CHECK FUNCTION With CONSULT Check door switches DOOR SW-DR, DOOR SW-AS in Data Monitor mode with CONSULT. Diagnosis Pr ...

BCM (body control module)

Reference Value NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display ...

Other materials:

Optical sensor 
Description  The optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to the BCM. Component Function Check  1.CHECK OPTICAL SENSOR SIGNAL BY CONSULT CONSULT Turn the ignition switch ON. Select "OPTICAL SENSOR" of BCM (HEAD LAMP ...

Door request switch
Description Transmits door lock/unlock operation to BCM. Component Function Check 1. CHECK FUNCTION With CONSULT Check door request switch REQ SW-DR, REQ SW-AS in Data Monitor mode. Diagnosis Procedure 1. CHECK DOOR REQUEST SWITCH OUTPUT SIGNAL Turn ignition switch OFF. Check ...

Steering switch
Removal and Installation REMOVAL Remove the driver airbag module. Refer to SR-12, "Removal and Installation". Remove the steering wheel audio control switch screws (A). Release the steering wheel audio control switch harness clips (B). Remove the steering wheel audio control switche ...