E041

Code E041:

HEI Circuit Detail:

DESCRIPTION:

The cam sensor is located on the distributor shaft and provides one pulse per rotation of the distributor. The PCM/ECM uses the cam sensor signal to determine the location of the camshaft for proper fuel distribution. Code E041 sets when the PCM/ECM is receiving reference pulses and does not detect any cam sensor pulses.

TEST CONDITIONS:

1. Code E012 not set.

2. Distributor reference pulses being received.

3. Engine speed 1600 rpm or less.

FAILURE CONDITIONS:

No cam reference pulse received from HEI module for 5 seconds.

ACTION TAKEN:

1. PCM/ECM turns on "SERVICE ENGINE SOON" telltale.

NOTES ON FAULT TREE:

1. This trouble tree requires the use of four jumper wires.

NOTE ON INTERMITTENTS:

Manipulate affected wiring while the engine is running. If the fault is induced the code will set and the wiring should be repaired for an intermittent open or short to ground. Disconnect and reconnect the distributor connector and PCM/ECM connector and ensure they are latched.