Suzuki 2000 Grand Vitara SQ625 Service Manual page 157

6-1-46 ENGINE (H25 ENGINE)
TABLE A-1 MALFUNCTION INDICATOR LAMP CIRCUIT CHECK
MIL DOES NOT COME ON OR MIL DIMMS AT IGNITION SWITCH ON LEAVING ENGINE OFF
WIRING DIAGRAM
TERMINAL ARRANGEMENT OF ECM (PCM) COUPLER VIEWED FROM HARNESS SIDE
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, ignition switch signal is sent to ECM. The ECM causes the main relay to
turn ON. Then, ECM (PCM) being supplied with the main power, turns ON the malfunction indicator lamp. 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 when the engine is running.
1. Battery
2. Ignition switch
3. ECM / PCM
4. MIL
5. Fuse box
6. Main fuse
7. Monitor connector