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Home >> Suzuki >> 2006 >> XL-7 Base, 4WD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> MIL Does Not Light at Ignition Switch ON and Engine Does Not Start Through It Is Cranked Up >> Troubleshooting
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MIL Does Not Light at Ignition Switch ON and Engine Does Not Start Through It Is Cranked Up: Troubleshooting

IGNITION SWITCH - TROUBLESHOOTING CHART

Step Action YES NO
1  Ignition fuse check 
  1. Remove ECM cover.
  2. Check for proper connection at terminals "E61-7", "C51-3-20", "E61-9", "C51-3-15", "C51-3-4", "C51-2-7", "C51-3-17" and "C51-3-6" of ECM connector.
  3. If OK, turn OFF ignition switch.
  4. Check for fuse blow at "IG COIL" fuse.

Is "IG COIL" fuse OK? 		 Go to Step 2. Fuse blows.
2  Ignition fuse check 
  1. Turn ON ignition switch.
  2. Measure ignition switch signal voltage between "C51-3-20" terminal of ECM connector and vehicle body ground.

Is terminal voltage 10 - 14 V? 		 Go to Step 3. Open in "BLK/WHT" circuit.
3  Main relay circuit check 
  1. Turn OFF ignition switch.
  2. Check for fuse blow at main fuse.
  3. If OK, measure main relay voltage between "E61-9" terminal of ECM connector and vehicle body ground with ignition switch turned OFF.

Is terminal voltage 10 - 14 V? 		 Go to Step 4. Go to Step 7.
4  Main relay circuit check 
  1. Turn ON ignition switch.
  2. Measure main relay voltage between "E61- 9" terminal of ECM connector and vehicle body ground.

Is terminal voltage 0 - 1 V? 		 Go to Step 6. Go to Step 5.
5  ECM ground check 
  1. Turn OFF ignition switch.
  2. Measure resistance between each "C51-2- 7", "C51-3-17" and "C51-3-6" terminal of ECM connector and vehicle body ground.

Is resistance less than 5 Ω? 		 Faulty ECM. ECM ground is open circuit or high resistance circuit.
6  Main relay circuit check 
  1. Turn ON ignition switch.
  2. Measure main relay voltage between each "C51-3-15", "C51-3-4" terminal of ECM connector and vehicle body ground.

Is terminal voltage 10 - 14 V? 		 Faulty ECM. Go to Step 7.
7  Main relay circuit check 
  1. Turn OFF ignition switch.
  2. Measure "BLK/RED" wire terminals voltage at main relay connector.

Is terminal voltage 10 - 14 V? 		 Go to Step 8. Open in "BLK/RED" circuit.
8  Main relay check 
  1. Turn OFF ignition switch.
  2. Remove main relay and then check main relay referring to MAIN RELAY INSPECTION .

Is main relay in good condition? 		 "BLU" ("E61-9") or "BLU/BLK" ("C51-3-15", "C51-3-4") wire is open circuit. Faulty main relay.
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