Operation CHARM: Car repair manuals for everyone.

P0340

Test 1:




Tests 2 - 5:




Tests 6 - 11:




Tests 12 - 16:




Tests 17 - 18:




SYMPTOM
P0340-NO CAM SIGNAL AT PCM

WHEN MONITORED
Engine cranking/running.

SET CONDITION
At least 5 seconds have elapsed with crankshaft position sensor signals present but no camshaft position sensor signal.

POSSIBLE CAUSES
- Checking intermittent CKP signal with lab
- Checking intermittent CMP signal with lab
- Checking intermittent wiring with lab scope
- Intermittent condition
- 5 volt supply circuit shorted to ground
- 5 volt supply circuit open
- 5 volt supply circuit shorted to voltage
- CMP sensor signal circuit shorted ground
- CMP sensor signal circuit open
- CMP sensor signal circuit shorted to voltage
- CMP sensor signal shorted to 5 volt supply circuit
- Sensor ground circuit open
- PCM - 5 volt supply
- PCM - CMP sensor signal
- Camshaft position sensor