Table A-1 Malfunction Indicator Lamp Circuit Check – Lamp Does Not Come “On” With Ignition Switch On (But Engine Stops) - Suzuki Wagon R Plus RB310 Service Manual

6-2-54 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Table A-1 Malfunction Indicator Lamp Circuit Check – Lamp Does Not Come
"ON" with Ignition Switch ON (But Engine Stops)
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 MIL Power Supply Check
1) Turn ignition switch to ON position.
Do other warning lights come ON?
2 METER Fuse Check
1) Turn ignition switch to OFF position.
2) Check for fuse blow at "METER" fuse.
Is "METER" fuse in good condition?
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
Yes
Go to Step 4.
Go to Step 3.
7
E22-1
E23-2
E23-1
5V
12V
2 1
8 7
19 18 17
30 29 28
No
Go to Step 2.
Replace "METER" fuse and
check for short.
BLK
BLK/YEL
BLK/YEL