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Home >> Jeep >> 2003 >> Grand Cherokee 2WD V8-4.7L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> No-Start Testing >> No Start Tests >> No Response From PCM With A No Start Condition

No Response From PCM With A No Start Condition

Test 1 -3:




Test 4 -9:






SYMPTOM
NO RESPONSE FROM PCM WITH A NO START CONDITION

POSSIBLE CAUSES
- (A7) PCM fused B+ circuits
- (F991) PCM fused ignition switch output circuit
- (Z81, Z82) PCM ground circuits
- 5 Volt sensor open or shorted
- Throttle position sensor
- (K7) 5 volt supply circuit short to ground
- (K6) 5 volt circuit supply shorted to ground
- PCM