P2104

Test 1:

Test 2 - Test 5:

Test 7 - Test 8:

SYMPTOM
P2104-STARTER RELAY CIRCUIT SHORT CIRCUIT

WHEN MONITORED
During engine crank attempt.

SET CONDITION
The ECM detects too much current on the Starter Motor Relay Control circuit.

POSSIBLE CAUSES
- Checking the engine control relay system
- Intermittent condition
- Substitute starter relay
- Starter relay control circuit shorted to ground
- Starter relay control circuit shorted to voltage
- Engine control module
- Starter relay control circuit open