ignition NISSAN NAVARA 2005 Repair Manual Online

TROUBLE DIAGNOSIS
ATC-73
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6.CHECK PBR FEEDBACK SIGNAL
1. Reconnect the front air control connector and air mix door motor
(driver) connector.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector M60
terminal 22 and ground.
4. Rotate driver temperature control dial through complete range.
OK or NG
OK >> Replace front air control. Refer toAT C - 11 6 , "REMOVAL"
.
NG >> GO TO 7.
7.CHECK PBR FEEDBACK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the air mix door motor (driver) connector and front
air control connector.
3. Check continuity between air mix door motor (driver) harness
connector M97 terminal 2 and front air control harness connec-
tor M60 terminal 22.
OK or NG
OK >> Replace air mix door motor (driver). Refer toATC-131,
"AIR MIX DOOR MOTOR (DRIVER)".
NG >> Repair or replace harness as necessary.
DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (PASSENGER)
1.CHECK RESULT FROM FRONT AIR CONTROL SELF-DIAGNOSIS
Self-diagnosis code 12 is present. Refer toAT C - 5 5 , "
A/C System Self-diagnosis Function".
YES or NO
YES >> GO TO 2.
NO >> GO TO 3.22 - Ground : Approx. 0V - 5V
WJIA1096E
2 - 22 Continuity should exist.
WJIA1248E

ATC-74
TROUBLE DIAGNOSIS
2.CHECK POWER SUPPLY CIRCUIT FOR AIR MIX DOOR MOTOR (PASSENGER)
1. Turn ignition switch OFF.
2. Disconnect front air control connector and air mix door motor
(passenger) connector.
3. Check continuity between front air control harness connector
M60 terminal 15 and 16 and air mix door motor (passenger) har-
ness connector M100 terminal 6 and 5.
OK or NG
OK >> Replace air mix door motor (passenger). Refer toAT C -
131, "AIR MIX DOOR MOTOR (PASSENGER)".
NG >> Repair or replace harness as necessary.
3.CHECK PBR REFERENCE SIGNAL VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect the air mix door motor (passenger) connector.
3. Turn ignition switch ON.
4. Check voltage between air mix door motor (passenger) harness
connector M100 terminal 1 and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.15 - 6 Continuity should exist.
16 - 5 Continuity should exist.
MJIB0059E
1 - Ground : Approx. 5V
MJIB0060E

TROUBLE DIAGNOSIS
ATC-75
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4.CHECK PBR REFERENCE VOLTAGE CIRCUIT BETWEEN AIR MIX DOOR (PASSENGER) AND
FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect the front air control connector.
3. Check continuity between air mix door motor (passenger) har-
ness connector M100 terminal 1 and front air control harness
connector M60 terminal 23.
OK or NG
OK >> Replace front air control. Refer toAT C - 11 6 , "REMOVAL"
.
NG >> Repair or replace harness as necessary.
5.CHECK PBR GROUND REFERENCE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the front air control connector.
3. Check continuity between air mix door motor (passenger) har-
ness connector M100 terminal 3 and front air control harness
connector M60 terminal 26.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness as necessary.1 - 23 Continuity should exist.
MJIB0061E
3 - 26 Continuity should exist.
MJIB0062E

ATC-76
TROUBLE DIAGNOSIS
6.CHECK PBR FEEDBACK SIGNAL
1. Reconnect the front air control connector and air mix door motor
(passenger) connector.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector M61
terminal 36 and ground.
4. Rotate passenger temperature control dial through complete
range.
OK or NG
OK >> Replace front air control. Refer toAT C - 11 6 , "REMOVAL"
.
NG >> GO TO 7.
7.CHECK PBR FEEDBACK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the air mix door motor (passenger) connector and
front air control connector.
3. Check continuity between air mix door motor (passenger) har-
ness connector M100 terminal 2 and front air control harness
connector M61 terminal 36.
OK or NG
OK >> Replace air mix door motor (passenger). Refer toAT C -
131, "AIR MIX DOOR MOTOR (PASSENGER)".
NG >> Repair or replace harness as necessary.36 - Ground : Approx. 0 - 5V
WJIA1249E
2 - 36 : Continuity should exist.
MJIB0063E

TROUBLE DIAGNOSIS
ATC-79
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COMPONENT DESCRIPTION
Intake door motor
The intake door motor is attached to the intake unit. It rotates so that
air is drawn from inlets set by the front air control. Motor rotation is
conveyed to a lever which activates the intake door.
NOTE:
This illustration is for LHD models. The layout for RHD models is
symmetrically opposite.
DIAGNOSTIC PROCEDURE FOR INTAKE DOOR MOTOR
1.CHECK RESULT FROM FRONT AIR CONTROL SELF-DIAGNOSIS
Self-diagnosis code 82 is present. Refer toAT C - 5 5 , "
A/C System Self-diagnosis Function".
YES or NO
YES >> GO TO 2.
NO >> Replace front air control. Refer toAT C - 11 6 , "
REMOVAL".
2.CHECK POWER SUPPLY CIRCUIT FOR INTAKE DOOR MOTOR
1. Turn ignition switch OFF.
2. Disconnect front air control connector and intake door motor
connector.
3. Check continuity between front air control harness connector
M60 terminal 5 and intake door motor harness connector M86
terminal 6 and between front air control harness connector M60
terminal 4 and intake door motor harness connector M86 termi-
nal 1.
OK or NG
OK >> Replace intake door motor. Refer toATC-129, "INTAKE
DOOR MOTOR".
NG >> Repair or replace harness as necessary.
MJIB0165E
5 - 6 Continuity should exist.
4 - 1 Continuity should exist.
MJIB0208E

TROUBLE DIAGNOSIS
ATC-83
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1.CHECK FUSES
Check 15A fuses [No. 24 and 27, (located in the fuse and fusible link box)]. For fuse layout, refer toPG-84,
"FUSE AND FUSIBLE LINK BOX".
OK or NG
OK >> GO TO 2.
NG >> GO TO 10.
2.CHECK BLOWER MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect blower motor connector.
3. Turn ignition switch ON.
4. Turn the blower control dial to select any mode except off.
5. Check voltage between blower motor harness connector M94
terminal 2 and ground.
OK or NG
OK >> GO TO 12.
NG >> GO TO 3.
3.CHECK BLOWER MOTOR RELAY (SWITCH SIDE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect blower motor relay.
3. Check voltage between blower motor relay harness connector
E28 terminals 3 and 6 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK BLOWER MOTOR RELAY
Refer toAT C - 8 6 , "
Blower Motor Relay".
OK or NG
OK >> GO TO 5.
NG >> Replace blower motor relay.
5.CHECK BLOWER MOTOR RELAY (SWITCH SIDE) CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect blower motor relay connector and blower motor con-
nector.
3. Check continuity between blower motor relay harness connector
E28 terminals 5 and 7 and blower motor harness connector M94
terminal 2.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.Fuses are good.
2 - Ground : Battery voltage.
MJIB0065E
3, 6 - Ground : Battery voltage.
MJIB0066E
5, 7 - 2 : Continuity should exist.
MJIB0067E

ATC-84
TROUBLE DIAGNOSIS
6.CHECK VARIABLE BLOWER CONTROL POWER SUPPLY CIRCUIT FOR OPEN
1. Disconnect variable blower control harness connector.
2. Check continuity between blower motor relay harness connector
E28 terminals 5 and 7 and variable blower control harness con-
nector M96 terminal 1.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7.CHECK VARIABLE BLOWER CONTROL SIGNAL CIRCUIT
1. Disconnect front air control connector.
2. Check continuity between front air control harness connector
M61 terminal 32 and variable blower control harness connector
M96 terminal 2.
OK or NG
OK >> GO TO 8.
NG >> Repair harness or connector.
8.CHECK BLOWER MOTOR RELAY (COIL SIDE) POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between blower motor relay connector E28 termi-
nal 1 and ground.
OK or NG
OK >> GO TO 9.
NG >> Repair harness or connector.
9.CHECK BLOWER MOTOR RELAY (COIL SIDE) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between blower motor relay connector E28 ter-
minal 2 and air control harness connector M61 terminal 38.
OK or NG
OK >> Replace front air control. Refer toAT C - 11 6 , "REMOVAL"
.
NG >> Repair harness or connector.5, 7 - 1 : Continuity should exist.
MJIB0068E
32 - 2 : Continuity should exist.
WJIA1263E
1 - Ground : Battery voltage.
LJIA0080E
2 - 38 : Continuity should exist.
WJIA1115E

TROUBLE DIAGNOSIS
ATC-85
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10.REPLACE FUSES
1. Replace fuses.
2. Activate the blower motor.
3. Do fuses blow?
YES or NO
YES >> GO TO 11.
NO >> Inspection End.
11 .CHECK BLOWER MOTOR POWER SUPPLY CIRCUIT FOR SHORT
1. Turn ignition switch OFF.
2. Disconnect blower motor connector and variable blower control
connector.
3. Check continuity between variable blower control harness con-
nector M96 terminal 1 and ground.
OK or NG
OK >> GO TO 12.
NG >> Repair harness or connector.
12.CHECK VARIABLE BLOWER CONTROL SIGNAL CIRCUIT
1. Disconnect front air control connector.
2. Check continuity between front air control harness connector
M61 terminal 32 and variable blower control harness connector
M96 terminal 2.
OK or NG
OK >> Check blower motor. If OK, replace variable blower con-
trol. Refer toATC-121, "
REMOVAL".
NG >> Repair harness or connector.1 - Ground : Continuity should not exist.
WJIA1264E
32 - 2 : Continuity should exist.
WJIA1263E

TROUBLE DIAGNOSIS
ATC-89
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2.PERFORM AUTO ACTIVE TEST
Refer toPG-19, "
Auto Active Test".
Does magnet clutch operate?
YES or NO
YES >>lWITH CONSULT-II
GO TO 5.
lWITHOUT CONSULT-II
GO TO 6.
NO >> Check 10A fuse (No. 42, located in IPDM E/R), and GO TO 3.
3.CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and compressor (magnet
clutch) connector.
3. Check continuity between IPDM E/R harness connector E12 ter-
minal 11 and compressor harness connector F20 terminal 1.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK >> Replace IPDM E/R. Refer toPG-26, "Removal and
Installation of IPDM E/R".
NG >> Replace magnet clutch. Refer toBCS-17, "
Removal and
Installation of BCM".
5.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
Check compressor ON/OFF signal. Refer toAT C - 3 3 , "
CONSULT-II
Function (BCM)".
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
11 – 1 : Continuity should exist.
WJIA0560E
SJIA0197E
A/C SW ON : COMP ON SIG ON
A/CSWOFF :COMPONSIGOFF
WJIA0469E

ATC-90
TROUBLE DIAGNOSIS
6.CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front air control connector.
3. Check continuity between BCM harness connector M42 terminal
27 and front air control harness connector M60 terminal 10.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7.CHECK VOLTAGE FOR FRONT AIR CONTROL (COMPRESSOR ON SIGNAL)
1. Reconnect BCM connector and front air control connector.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector M60
terminal 10 and ground.
OK or NG
OK >> GO TO 8.
NG-1 >> If the voltage is approx. 5V when A/C switch is ON, replace front air control. Refer toAT C - 11 6 ,
"REMOVAL".
NG-2 >> If the voltage is approx. 0V when A/C switch is OFF, replace BCM. Refer toBCS-17, "
Removal
and Installation of BCM". 27 - 10 Continuity should exist.
MJIB0070E
Terminals
ConditionVoltage
(Approx.) (+)
(-) Front air
control con-
nectorTerminal No.
M60 10 GroundA/C switch: ON 0V
A/C switch: OFF 5V
WJIA1137E