2004 NISSAN PATROL Electronic Repair Manual

TEC519M
ENGINE AND EMISSION CONTROL OVERALL
SYSTEMTB48DE A/T
Circuit Diagram (Cont'd)
EC-4014

Wiring Diagram
WITH SNOW MODE SWITCH
TEC521M
SNOW MODE SWITCHTB48DE A/T
EC-4015

Wiring Diagram
TEC522M
ELECTRICAL LOAD SIGNALTB48DE A/T
EC-4016

TEC523M
ELECTRICAL LOAD SIGNALTB48DE A/T
Wiring Diagram (Cont'd)
EC-4017

Diagnostic Procedure
1 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ªONº.
2. Connect CONSULT-II and select ªDATA MONITORº mode.
3. Select ªLOAD SIGNALº and check indication under the following conditions.
PBIB0103E
MTBL1594
OK or NG
OKcGO TO 2.
NGcGO TO 3.
ELECTRICAL LOAD SIGNALTB48DE A/T
EC-4018

2 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
With CONSULT-II
Check ªLOAD SIGNALº indication under the following conditions.
PBIB0103E
MTBL1595
OK or NG
OKcINSPECTION END
NGcGO TO 7.
3 CHECK REAR WINDOW DEFOGGER FUNCTION
1. Start engine.
2. Turn ªONº the rear window defogger switch.
3. Check the rear windshield. Is the rear windshield heated up?
YesorNo
Ye scGO TO 4.
NocCheck rear window defogger circuit. Refer to EL section.
4 CHECK REAR WINDOW DEFOGGER INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect rear window defogger relay.
3. Disconnect combination meter harness connector.
4. Check harness continuity between rear window defogger relay terminal 5 and combination meter terminal 27.
Refer to Wiring Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 6.
NGcGO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E127, M21
+Harness for open or short between rear window defogger relay and combination meter
cRepair open circuit or short to ground or short to power in harness or connectors.
ELECTRICAL LOAD SIGNALTB48DE A/T
Diagnostic Procedure (Cont'd)
EC-4019

6 CHECK COMBINATION METER
Refer to EL section.
OK or NG
OKcGO TO 11.
NGcReplace combination meter.
7 CHECK HEADLAMP FUNCTION
1. Start engine.
2. Lighting switch ªONº at 2nd position.
3. Check that headlamp high beams are illuminated.
OK or NG
OKcGO TO 8.
NGcCheck headlamp circuit. Refer to EL section.
8 CHECK HEADLAMP INPUT SIGNAL CIRCUIT
1. Stop engine.
2. Disconnect combination meter harness connector.
3. Disconnect combination switch harness connector.
4. Check harness continuity between combination switch terminals 6, 7 and combination meter terminal 26.
SEC014E
MTBL1596
5. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 10.
NGcGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E127, M21
+Diode E108
+Harness for open or short between combination switch and combination meter
cRepair open circuit or short to ground or short to power.
ELECTRICAL LOAD SIGNALTB48DE A/T
Diagnostic Procedure (Cont'd)
EC-4020

10 CHECK COMBINATION METER
Refer to EL section.
OK or NG
OKcGO TO 11.
NGcReplace combination meter.
11 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-125 in Service Manual (Publication No. SM1E-Y61EG1).
cINSPECTION END
ELECTRICAL LOAD SIGNALTB48DE A/T
Diagnostic Procedure (Cont'd)
EC-4021