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6-2-56 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Table A-2 Malfunction Indicator Lamp Circuit Check-lamp Remains "ON" after
Engine Starts
Wiring Diagram
2
WHT/BLU
BLK/YEL
1
80A
60A 20A
E23
7
6
5
4
17
16
15
14
13
12
27
26
25
24
23
22
34
33
32
1. Relay box
2. Ignition switch
3. Main relay
Circuit Description
When the ignition switch is turned ON, ECM causes the main relay to turn ON (close the contact point). Then,
ECM being supplied with the main power, turns ON the malfunction indicator lamp (MIL). When the engine
starts to run and no malfunction is detected in the system, MIL goes OFF but if a malfunction was or is detected,
MIL remains ON even when the engine is running.
Troubleshooting
Step
1
DTC Check
1) Start engine and recheck DTC while engine running.
Is there any DTC(s)?
6
8
BLU/BLK
BLK/RED
BLU/BLK
5
3
BLK/YEL
D
C
BLK/YEL
B
A
E22
3
2
1
7
6
5
4
3
11
10
9
8
19
18
17
16
15
14
13
12
21
20
19
18
27
26
25
24
31
30
29
28
35
34
33
32
4. Malfunction indicator lamp in combination meter
5. "IG COIL" fuse
6. "METER" fuse
Action
4
PPL/WHT
E21-1
BLK/WHT
E21-28
BLU/BLK
E23-15
BLK/RED
BLK/RED
E21-6
BLK/RED
E21-5
E21
2
1
6
5
4
3
11
10
9
8
16
15
14
13
12
11
10
9
23
22
21
20
27
26
25
24
23
22
21
20
31
30
29
28
35
34
33
32
31
7. ECM
8. Circuit fuse box
Go to Step 2 of
"Engine and Emis-
sion Control System
Check" in this
section.
7
E22-1
E23-2
E23-1
5V
12V
2
1
8
7
19
18
17
30
29
28
Yes
Go to Step 2.
BLK
BLK/YEL
BLK/YEL
No
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