Page 1305 of 2898
HATCHBACKNJEC0550S03Type-1NJEC0550S0301
HEC819
ELECTRICAL LOAD SIGNALQG
Wiring Diagram (Cont'd)
EC-581
Page 1306 of 2898
Type-2NJEC0550S0302
HEC966
ELECTRICAL LOAD SIGNALQG
Wiring Diagram (Cont'd)
EC-582
Page 1307 of 2898
Diagnostic Procedure Ð Load Signal ÐNJEC0584
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 4.
2 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªLOAD SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
SEF954X
OK or NG
OK©GO TO 3.
NG©GO TO 6.
3 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªLOAD SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
SEF955X
OK or NG
OK©INSPECTION END
NG©GO TO 14.
ELECTRICAL LOAD SIGNALQG
Diagnostic Procedure Ð Load Signal Ð
EC-583
Page 1308 of 2898
4 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 50 and ground under the following conditions.
SEF956X
OK or NG
OK©GO TO 5.
NG©GO TO 6.
5 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 50 and ground under the following conditions.
SEF957X
OK or NG
OK©INSPECTION END
NG©GO TO 15.
6 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
Yes (Sedan)©GO TO 7.
Yes (Hatchback)©GO TO 12.
No©Refer to EL-240, ªRear Window Defoggerº.
ELECTRICAL LOAD SIGNALQG
Diagnostic Procedure Ð Load Signal Ð (Cont'd)
EC-584
Page 1309 of 2898
7 CHECK POWER SUPPLY
1. Stop engine.
2. Turn ªOFFº the rear window defogger switch.
3. Disconnect rear window defogger relay.
4. Check voltage between terminal 3 (LHD models), 5 (RHD models) and ground with CONSULT-II or tester.
SEF626Z
OK or NG
OK©GO TO 8.
NG©Check the following and repair.
+20A fuse
+Harness for open and short between fuse block and rear window defogger relay
8 CHECK REAR WINDOW DEFOGGER RELAY
Refer to ªComponent Inspectionº, EC-590.
OK or NG
OK©GO TO 9.
NG©Replace rear window defogger relay.
9 CHECK REAR WINDOW DEFOGGER INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 50 and rear window defogger relay terminals 5 (LHD models), 3 (RHD
models).
Refer to wiring diagram.
SEF627Z
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 11.
NG©GO TO 10.
ELECTRICAL LOAD SIGNALQG
Diagnostic Procedure Ð Load Signal Ð (Cont'd)
EC-585
Page 1310 of 2898
10 DETEC TMALFUNCTIONIN GPART
11 CHEC KINTERMITTEN TINCIDENT
12 CHEC KREA RWINDO WDEFOGGE RINPU TSIGNA LCIRCUIT
13 DETEC TMALFUNCTIONIN GPART
14 CHEC KHEADLAM PFUNCTION
15 CHEC KHEADLAM PFUNCTION
Diagnostic Procedure Ð Load Signal Ð (Cont'd)
Page 1311 of 2898

16 CHECK HEADLAMP INPUT SIGNAL CIRCUIT-1
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect lighting switch connector.
4. Check harness continuity between ECM terminal 50 and lighting switch connector terminal 10 under the following con-
ditions.
SEF619Y
5. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 18.
NG©GO TO 17.
17 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M63, F102
+Harness connectors M21, E106
+Joint connector-2
+Harness for open and short between ECM and lighting switch connector
©Repair open circuit or short to ground or short to power in harness or connectors.
18 CHECK HEADLAMP INPUT SIGNAL CIRCUIT-2
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect lighting switch connector.
4. Check harness continuity between ECM terminal 50 and lighting switch connector terminal 9 under the following condi-
tions.
SEF627Y
5. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 22.
NG©GO TO 19.
ELECTRICAL LOAD SIGNALQG
Diagnostic Procedure Ð Load Signal Ð (Cont'd)
EC-587
Page 1312 of 2898

19 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M63, F102
+Harness connectors M79, E118
+Diode M110
+Joint connector-2
+Harness for open and short between ECM and lighting switch connector
©Repair open circuit or short to ground or short to power in harness or connectors.
20 CHECK HEADLAMP INPUT SIGNAL CIRCUIT
Without Daytime Light system
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect lighting switch connector.
4. Check harness continuity between ECM terminal 50 and lighting switch connector terminal 10 under the following con-
ditions.
SEF161Z
5. Also check harness for short to ground and short to power.
With Daytime Light system
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect headlamp relay LH connector.
4. Check harness continuity between ECM terminal 50 and headlamp relay LH connector terminal 3 under the following
conditions.
SEF445Z
5. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 22.
NG©GO TO 21.
ELECTRICAL LOAD SIGNALQG
Diagnostic Procedure Ð Load Signal Ð (Cont'd)
EC-588