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Home >> Suzuki >> 2005 >> Grand Vitara EX, RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> H25 Engine >> Diagnostic Information and Procedures >> DTC P1510: ECM (PCM) Back-Up Power Supply Malfunction >> DTC Troubleshooting
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DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step Action Yes No
1 Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to "ENGINE AND EMISSION CONTROL SYSTEM CHECK  ".
2 Battery voltage supply circuit check 
  1. Remove ECM (PCM) cover.
  2. While engine running, check voltage between "E61-35" and ground.

Is voltage 10-14 V? 
Intermittent trouble. If OK, substitute a known-good ECM (PCM) and recheck. Fuse "DOME" is blown or faulty "WHT" wire.