Checking components and wiring
Check the engine control module (ECM) and camshaft position (CMP) sensor connectors. Check for contact resistance and oxidation according to Contact resistance and oxidation .
Check power supply cable between engine control module (ECM) connector terminal #83 and camshaft position (CMP) sensor terminal 3. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.
The power supply must be 5 V.
Check remedy the signal cable between engine control module (ECM) terminal #58 and the camshaft position (CMP) sensor terminal 2. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check for a short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Remedy if necessary.
Check the ground lead between engine control module (ECM) terminal #79 and camshaft position (CMP) sensor terminal 1. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.
Try a new camshaft position (CMP) sensor if no faults are found in the above fault-tracing.
Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000
- To replace the camshaft position (CMP) sensor, see Replacing camshaft position (CMP) sensor .
- Continue
Refer to Information