Infiniti Q45. Manual — part 118
TROUBLE DIAGNOSIS
ATC-67
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ATC
2.
CHECK SIGNAL FOR AUTO AMP.
Check voltage between auto amp. harness connector M119 terminal
5 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Replace auto amp.
3.
CHECK POWER SUPPLY FOR EACH DOOR MOTOR
Check voltage between passenger side mode door motor harness
connector M106 terminal 1, passenger side air mix door motor har-
ness connector M107 terminal 1, intake door motor harness connec-
tor M118 terminal 1, driver side mode door motor harness connector
M471 terminal 3, driver side air mix door motor harness connector
M472 terminal 3 and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Repair harness or connector.
4.
CHECK SIGNAL FOR EACH DOOR MOTOR
Check voltage between passenger side mode door motor harness
connector M106 terminal 3, passenger side air mix door motor har-
ness connector M107 terminal 3, intake door motor harness connec-
tor M118 terminal 3, driver side door motor harness connector M471
terminal 6, driver side door motor connector M472 terminal 6 and
ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair harness or connector.
5.
CHECK MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect each door motor connector.
3.
Check continuity between passenger side mode door motor har-
ness connector M106 terminal 2, passenger side air mix door
motor harness connector M107 terminal 2, intake door motor
harness connector M118 terminal 2, driver side mode door
motor harness connector M471 terminal 11, driver side air mix
door motor harness connector M472 terminal 11 and ground.
OK or NG
OK
>> GO TO 6.
NG
>> Repair harness or connector.
5 – Ground
: Approx. 5 V
RJIA2858E
1, 3 – Ground
: Approx. 12 V
RJIA0275E
3, 6 – Ground
: Approx. 5 V
RJIA0276E
2, 11 – Ground
: Continuity should exist.
RJIA0277E
ATC-68
TROUBLE DIAGNOSIS
6.
CHECK MOTOR OPERATION
1.
Reconnect each door motor connector.
2.
Turn ignition switch ON.
3.
Confirm each door motor operation.
OK or NG
OK
>> (Return to operate normally.)
●
Poor contacting the motor connector
NG
>> (Does not operate normally.)
●
GO TO 7.
7.
CHECK AIR MIX DOOR MOTOR AND INTAKE DOOR MOTOR OPERATION
1.
Turn ignition switch OFF.
2.
Disconnect mode door motor (driver side, passenger side), air mix door motor (driver side, passenger
side) and intake door motor connectors.
3.
Reconnect air mix door motor (driver side, passenger side) and intake door motor connectors.
4.
Turn ignition switch ON.
5.
Confirm air mix door motor (driver side, passenger side) and intake door motor operation.
OK or NG
OK
>> (Air mix and intake door motors operate normally.)
●
GO TO 10.
NG
>> (Air mix and intake door motors does not operate normally.)
●
GO TO 8.
8.
CHECK MODE DOOR MOTOR AND INTAKE DOOR MOTOR OPERATION
1.
Turn ignition switch OFF.
2.
Disconnect air mix door motor connectors (driver side, passenger side).
3.
Reconnect mode door motor connectors (driver side, passenger side).
4.
Turn ignition switch ON.
5.
Confirm mode door motor (driver side, passenger side) and intake door motor operation.
OK or NG
OK
>> (Mode and intake door motors operate normally.)
●
GO TO 11.
NG
>> (Mode and intake door motors does not operate normally.)
●
GO TO 9.
9.
CHECK MODE DOOR MOTOR AND AIR MIX DOOR MOTOR OPERATION
1.
Turn ignition switch OFF.
2.
Disconnect intake door motor connector.
3.
Reconnect air mix door motor connectors (driver side, passenger side).
4.
Turn ignition switch ON.
5.
Confirm mode door motor and air mix door motor operation.
OK or NG
OK
>> (Mode and air mix door motors operate normally.)
●
Replace intake door motor.
NG
>> (Intake door motor does not operate normally.)
●
Replace auto amp.
TROUBLE DIAGNOSIS
ATC-69
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ATC
10.
CHECK MODE DOOR MOTOR OPERATION
1.
Turn ignition switch OFF.
2.
Reconnect mode door motor (driver side) connector.
3.
Turn ignition switch ON.
4.
Confirm mode door motor (driver side) operation.
OK or NG
OK
>> [Mode door motor (driver side) operates normally.]
●
Replace mode door motor (passenger side).
NG
>> [Mode door motor (driver side) does not operate normally.]
●
Replace mode door motor (driver side).
11.
CHECK AIR MIX DOOR MOTOR OPERATION
1.
Turn ignition switch OFF.
2.
Reconnect air mix door motor (driver side) connector.
3.
Turn ignition switch ON.
4.
Confirm air mix door motor (driver side) operation.
OK or NG
OK
>> [Air mix door motor (driver side) operates normally.]
●
Replace air mix door motor (passenger side).
NG
>> [Air mix door motor (driver side) does not operate normally.]
●
Replace air mix door motor (driver side).
ATC-70
TROUBLE DIAGNOSIS
Mode Door Motor Circuit
NJS0008F
SYMPTOM:
●
Air outlet does not change.
●
Mode door motor does not operate normally.
INSPECTION FLOW
*1
*2
*3
ATC-54, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No. 1.
*4
ATC-54, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No. 5 to 7.
*5
ATC-110, "Ambient Sensor Circuit"
*6
ATC-112, "In-Vehicle Sensor Cir-
cuit"
*7
ATC-115, "Sunload Sensor Circuit"
*8
ATC-75, "Air Mix Door Motor PBR
Circuit"
*9
ATC-54, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No. 14.
*10
*11
*12
*13
ATC-118, "Intake Sensor Circuit"
RJIA3198E
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