E016

Code E16:

Generator Voltage Circuit:

DESCRIPTION:

The PCM/ECM monitors vehicle electrical system voltage on ignition 1 fuse to the PCM/ECM. This code will set if system voltage drops below 10 volts or goes above 16 volts with the engine running above 500 rpm. If the ignition voltage goes to 0 the car will not run since the PCM/ECM does not have the ignition signal.

TEST CONDITIONS:

1. Engine speed greater than or equal to 500 RPM.

FAILURE CONDITIONS:

Ignition voltage less than 10.0 volts or greater than 16.0 volts for 5 seconds.

ACTION TAKEN:

1. PCM/ECM turns on "SERVICE VEHICLE SOON" telltale.
2. PCM/ECM disables canister purge.
3. PCM/ECM disables Cruise Control.
4. PCM/ECM disables VCC.

NOTES ON FAULT TREE:

1. Check PCM/ECM snapshot data for parameter P.0.7. If the voltage is 16 volts or greater, this indicates that the generator is not controlling voltage.
2. Checking for proper charging system operation.
3. Checking for proper charging system regulation with no electrical loads on the alternator.

NOTE ON INTERMITTENTS:

Code E16 may be stored as a history code if the battery charge was low. Load test the battery and check for proper operation of the charging system.