ignition NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS
MTC-65
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MTC
3.CHECK POWER SUPPLY CIRCUITS FOR AIR MIX DOOR MOTOR (FRONT)
1. Turn ignition switch OFF.
2. Disconnect front air control connector and air mix door motor
(Front) connector.
3. Check continuity between front air control harness connector
M98 terminal 2 and 3 and air mix door motor (Front) connector
M99 terminal 6 and 5.
OK or NG
OK >> Replace air mix door motor (Front). Refer toM T C - 111 ,
"AIR MIX DOOR MOTOR".
NG >> Repair or replace harness as necessary.
4.CHECK PBR REFERENCE SIGNAL VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect the air mix door motor (Front) connector.
3. Turn ignition switch ON.
4. Check voltage between air mix door motor (Front) harness con-
nector M99 terminal 1 and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.2 - 6 : Continuity should exist.
3 - 5 : Continuity should exist.
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1 - Ground : Approx. 5V
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MTC-66
TROUBLE DIAGNOSIS
5.CHECK PBR REFERENCE VOLTAGE CIRCUIT BETWEEN AIR MIX DOOR MOTOR (FRONT) AND
FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect the front air control connector.
3. Check continuity between air mix door motor (Front) harness
connector M99 terminal 1 and front air control harness connec-
tor M98 terminal 23.
OK or NG
OK >> Replace front air control. Refer toMTC-98, "CONTROL
UNIT".
NG >> Repair or replace harness as necessary.
6.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 (Front) harness
connector M99 terminal 3 and front air control harness connec-
tor M98 terminal 26.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace harness as necessary.1 - 23 : Continuity should exist.
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3 - 26 : Continuity should exist.
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TROUBLE DIAGNOSIS
MTC-67
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7.CHECK PBR FEEDBACK SIGNAL
1. Turn ignition switch OFF.
2. Reconnect the front air control connector and air mix door motor
(Front) connector.
3. Check voltage between front air control harness connector M98
terminal 22 and ground.
4. Rotate Front temperature dial through complete range.
OK or NG
OK >> Replace front air control. Refer toMTC-98, "CONTROL
UNIT".
NG >> GO TO 8.
8.CHECK PBR FEEDBACK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the air mix door motor (Front) connector and front air
control connector.
3. Check continuity between air mix door motor (Front) harness
connector M99 terminal 2 and front air control harness connec-
tor M98 terminal 22.
OK or NG
OK >> Replace air mix door motor (Front). Refer toM T C - 111 ,
"AIR MIX DOOR MOTOR".
NG >> Repair or replace harness as necessary.22 - Ground : Approx. 0V - 5V
MJIB0098E
2 - 22 Continuity should exist.
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MTC-70
TROUBLE DIAGNOSIS
3.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
M98 terminal 5 and intake door motor connector M86 terminal 6
and between front air control harness connector M98 terminal 4
and intake door motor connector M86 terminal 1.
OK or NG
OK >> Replace intake door motor. Refer toMTC-109, "INTAKE
DOOR MOTOR".
NG >> Repair or replace harness as necessary.5 - 6 Continuity should exist.
4 - 1 Continuity should exist.
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MTC-74
TROUBLE DIAGNOSIS
4.CHECK BLOWER MOTOR RELAY
Refer toMTC-77, "
Blower Motor Relay".
OK or NG
OK >> GO TO 5.
NG >> Replace blower motor relay.
5.CHECK BLOWER MOTOR POWER FROM RELAY TO BLOWER MOTOR
1. Reconnect blower motor harness connector.
2. Disconnect blower motor relay.
3. Connect a jumper wire between blower motor relay connector
E28 terminals 3 and 5 and between blower motor relay connec-
tor E28 terminals 6 and 7.
4. Momentarily (no more than 4 seconds), set blower switch to any
position except OFF.
OK or NG
OK >> GO TO 6.
NG >> GO TO 10.
6.CHECK BLOWER MOTOR RELAY (COIL SIDE) POWER SUPPLY CIRCUIT
1. Turn ignition key ON.
2. Set blower switch to any position except OFF.
3. Check voltage between blower motor relay harness connector
E28 terminal 1 and ground.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7.CHECK BLOWER MOTOR RELAY (COIL SIDE) GROUND CIRCUIT
Check continuity between blower motor relay harness connector E28 terminal 2 and ground.
OK or NG
OK >> Replace blower motor relay.
NG >> Repair harness or connector.
8.REPLACE FUSE
Refer toPG-84, "
FUSE AND FUSIBLE LINK BOX".
Does fuse open when blower motor is turned on?
YESorNO
YES >> GO TO 9.
NO >> INSPECTION END.Blower motor should rotate.
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1 - Ground : Battery voltage.
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2 - Ground Continuity should exist.
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TROUBLE DIAGNOSIS
MTC-81
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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.
NG >> Replace magnet clutch. Refer toMTC-123, "
Removal
and Installation for Compressor Clutch".
5.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
Check compressor ON/OFF signal. Refer toBCS-14, "
CONSULT-II
Function (BCM)".
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
11 – 1 : Continuity should exist.
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A/C SW ON : COMP ON SIG ON
A/CSWOFF :COMPONSIGOFF
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MTC-82
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 M98 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 M98
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 toMTC-98,
"CONTROL UNIT".
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.
MJIB0107E
Terminals
Condition Voltage (+)
(-) Front air
control con-
nectorTerminal No.
M98 10 GroundA/C switch: ON Approx. 0V
A/C switch: OFF Approx. 5V
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MTC-84
TROUBLE DIAGNOSIS
10.CHECK CIRCUIT CONTINUITY BETWEEN BCM, FRONT AIR CONTROL AND BLOWER SWITCH
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front air control connector and
blower switch.
3. Check continuity between BCM harness connector M42 terminal
26 and blower switch M59 terminal 2 and between front air con-
trol harness connector M98 terminal 18 and blower switch M59
terminal 8.
OK or NG
OK >> GO TO 11.
NG >> Repair harness or connector.
11 .CHECK VOLTAGE FOR BCM(FAN ON SIGNAL) AND FRONT AIR CONTROL(BLOWER MONITOR
SIGNAL)
1. Reconnect BCM connector and front air control connector and
blower switch.
2. Turn ignition switch ON.
3. Check voltage between the following terminals.
OK or NG
OK >> GO TO 12.
NG-1 >> If the voltage is approx.12V when blower motor is ON,
replace blower switch. Refer toMTC-98, "
CONTROL
UNIT".
NG-2 >> If the voltage is approx. 0V when blower motor is OFF,
replace BCM. Refer toBCS-17, "
Removal and Installa-
tion of BCM".
NG-3 >> If the voltage is less than 12V when blower motor is ON, replace front air control. Refer toMTC-
98, "CONTROL UNIT". 26 - 2 Continuity should exist.
18 - 8 Continuity should exist.
MJIB0109E
Terminals
Condition Voltage (+)
(-)
Connector Terminal No.
BCM
M4226
GroundA/C switch: ON
Blower motor
operatesApprox. 0V
A/C switch: OFF Approx. 12V
Front air control
M9818A/C switch: ON
Blower motor
operatesLess than
12V
MJIB0110E

MTC-96
TROUBLE DIAGNOSIS
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. (56 or 57 is indi-
cated on front air control as a result of conducting Self-diagnosis).
1.CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
3. Check voltage between intake sensor harness connector M82
terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between intake sensor harness connector M82
terminal 1 and front air control harness connector M98 terminal
13.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK INTAKE SENSOR
Refer toMTC-97, "
COMPONENT INSPECTION".
OK or NG
OK >> 1. Replace front air control.
2. Go to self-diagnosisMTC-51, "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
NG >> 1. Replace intake sensor.
2. Go to self-diagnosisMTC-51, "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
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2 - Ground : Approx. 5V
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1 - 13 : Continuity should exist.
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TROUBLE DIAGNOSIS
MTC-97
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4.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between intake sensor harness connector M82
terminal 2 and front air control harness connector M98 terminal
12.
4. Check continuity between intake sensor harness connector M82
terminal 2 and ground.
OK or NG
OK >> 1. Replace front air control.
2. Go to self-diagnosisMTC-51, "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
NG >> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
After disconnecting intake sensor connector, measure resistance
between terminals 1 and 2 at sensor harness side, using the table
below.
If NG, replace intake sensor.
NOTE:
This illustration is for LHD models.
The layout for RHD models is symmetrically opposite.2 - 12 : Continuity should exist.
2 - Ground : Continuity should not exist.
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Temperature°C(°F) Resistance kW
-15 (5) 209.0
-10 (14) 160.0
-5 (23) 123.0
0 (32) 95.8
5 (41) 74.9
10 (50) 58.9
15 (59) 46.7
20 (68) 37.3
25 (77) 30.0
30 (86) 24.2
35 (95) 19.7
40 (104) 16.1
45 (113) 13.2
MJIB0199E