Suzuki Wagon R Plus RB310 - Table A-2 Malfunction Indicator Lamp Circuit Check-Lamp Remains “ON” after Engine Starts

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
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
1. Relay box 4. Malfunction indicator lamp in combination meter 7. ECM
2. Ignition switch 5. “IG COIL” fuse 8. Circuit fuse box
3. Main relay 6. “METER” fuse
E23-15
E21-28
12V
5V
E21-6
E21-5
BLK/WHT
BLK/RED
BLK/RED
BLK/RED
WHT/BLU
80A
60A 20A
B
BLK/YEL BLK/YEL
BLK/YEL
BLU/BLK
BLU/BLK
PPL/WHT
E21-1
BLK/RED
BLU/BLK
E22-1
E23-2
BLK
BLK/YEL
BLK/YEL
E23-1
DC
A
E23 E22 E21
12345671234561234567
7
891011121314151617 8910111213141516 891011121314151617
1819
1819
1718192021222324252627 20212223 202122232425 24252627 2627
2829303132 32 282930 28293031 3133 33 323334 3435 3435
2
1
3
8
6
5
4
7
Step Action Yes No
1 DTC Check
1) Start engine and recheck DTC while engine running.
Is there any DTC(s)?
Go to Step 2 of
“Engine and Emis-
sion Control System
Check” in this
section.
Go to Step 2.