TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the ECM/PCM Relay from the IPM.
Connect a jumper wire between cavity 30 and cavity 87 of the ECM/PCM Relay
connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check all of the ECM Battery Supply
and ECM/PCM Relay Output circuits including the Battery(+) Sense (Fuel Heater
Relay Output) circuit.
Does the test light illuminate brightly for each circuit?
All
Yes
→ Go To 3
No
→ Repair the Battery Supply or ECM/PCM Relay Output circuit(s)
for high resistance.
Perform CHARGING VERIFICATION - VER-3.
3
Turn the ignition off.
Disconnect ECM harness connectors.
Disconnect the Generator Field harness connector.
Measure the resistance between ground and the Generator Field Control circuit.
Is the resistance above 1000 ohms?
All
Yes
→ Go To 4
No
→ Repair the Generator Field Control circuit for a short to ground.
Perform CHARGING VERIFICATION - VER-3.
4
Turn the ignition off.
Disconnect the Generator Field harness connector.
Measure the resistance between ground and the Generator Field Control terminal on
the back of the Generator.
Is the resistance above 1000 ohms?
All
Yes
→ Replace and program the Engine Control Module in accordance
with the Service Information.
Perform CHARGING VERIFICATION - VER-3.
No
→ Repair or replace the Generator as necessary.
Perform CHARGING VERIFICATION - VER-3.
119
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO HIGH —
Continued