Owner's Manual

TROUBLE DIAGNOSIS
MTC-55
C
D
E
F
G
H
I
K
L
M
A
B
MTC
Revision: March 2005 2005 Altima
1. CHECK POWER SUPPLY FOR FAN CONTROL AMP.
1. Disconnect fan control amp. connector.
2. Turn ignition switch ON.
3. Check voltage between fan control amp. harness connector
M64 terminal 3 (L/W) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 7.
2. CHECK FAN FEEDBACK CIRCUIT
1. Disconnect front air control connector.
2. Check voltage between front air control harness connector M49
terminal 18 (L/W) and ground.
OK or NG
OK >> GO TO 3.
NG >> Check for open circuit in wiring harness. Repair or replace as necessary.
3. CHECK BODY GROUND CIRCUIT FOR FAN CONTROL AMP.
1. Turn ignition switch OFF.
2. Check continuity between fan control amp. harness connector
M64 terminal 1 (B) and ground.
OK or NG
OK >> Reconnect fan control amp. harness connector and GO
TO 4.
NG >> Repair harness or connector.
Terminal
Voltage (V)
(Approx.)
(+)
(-)
Connector - Terminal Wire color
M64-3 L/W Body ground 12V
WJIA0855E
Terminal
Voltage (V)
(Approx.)
(+) (-)
Connector - Terminal Wire color
Body ground 12V
M49-18 L/W
WJIA1190E
Terminal Continuity
Connector - Terminal Wire color
Body ground Yes
M64-1 B
WJIA0856E