Nissan Quest E52. Manual - part 761
HAC-174
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
DIAGNOSIS SYSTEM (A/C AMP.)
DIAGNOSIS SYSTEM (A/C AMP.)
Description
INFOID:0000000009652637
Air conditioning system performs self-diagnosis, operation check, and function diagnosis using diagnosis func-
tion of each control unit.
On Board Diagnosis Function
INFOID:0000000009652638
ON BOARD DIAGNOSIS ITEM
On board diagnosis function of A/C amp. consists of steps 1. Indicator check can be performed by step 1.
METHOD OF STARTING
Self-diagnosis Mode Entry
The self-diagnosis is started by pressing the ON·OFF switch for 5 seconds or more within 10 seconds after
starting engine.
Self-diagnosis Cancellation
By pressing DEF switch or turning ignition switch OFF, the self-diagnosis is canceled.
STEP 1: INDICATOR CHECK
Description
Front A/C control (switch indicator and display) and rear A/C control (display) indication are checked.
Normal: All switch indicator and display indication are turned ON.
Malfunction: Malfunctioning part indicator is not turned ON.
ECU
Diagnostic item
(CONSULT)
A/C amp.
On board diagnosis function
BCM
BCM-AIR CONDITIONER
Self Diagnostic Result
Data Monitor
ECM
ENGINE
Self Diagnostic Result
Data Monitor
IPDM E/R
IPDM E/R
Self Diagnostic Result
Data Monitor
Auto active test
Diagnosis item
Diagnosis content
Diagnosis part
STEP 1:
Indicator check
Switch indicator and display indication are
checked.
• Front A/C control (A/C amp.)
• Rear A/C control