FUNCTION CONFIRMATION PROCEDURE
NHHA0176S02
1
ENTER SELF-DIAGNOSTIC MODE
Perform steps 1 - 3
1. Turn the ignition OFF.
2. Start the engine.
3. Immediately after starting the engine press and hold the OFF switch (for the auto A/C system) for at least 5 seconds.
The A/C Auto Amp. should now be in Self Diagnosis mode. Self Diagnosis steps 1 - 5 can now be performed. Self Diagno-
sis step-1 will be displayed first. Shifting from one step to another is accomplished by turning the TEMP dial clockwise or
counterclockwise.
©
GO TO 2.
2
STEP-1 LED/DISPLAY CHECK
Verify all segments illuminate.
If all segments do not illuminate the fluorescent display tube is malfunctioning or the system has not entered self diagnosis
which would indicate a malfunctioning OFF switch.
Do all LEDs and segments illuminate?
RHA093I
Yes or No
Yes
©
GO TO 3.
No
©
Malfunctioning
switch, LED or fluorescent display tube.
Replace A/C auto amp.
3
CHECK TO ADVANCE SELF-DIAGNOSIS STEP-2
1. Turn the TEMP dial clockwise.
2. Advance to self-diagnosis STEP-2.
If the system does not shift between step-1 and 2 a malfunctioning TEMP dial is indicated.
Yes or No
Yes
©
GO TO 4.
No
©
Malfunctioning TEMP dial.
Replace A/C auto amp.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Self-diagnosis (Cont’d)
HA-37