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P0560-SYSTEM VOLTAGE TOO LOW —
TEST
6
Turn the ignition off.
Disconnect the Generator Field harness connector.
Measure the resistance of the Field Control terminals on the back of the Generator.
Is the resistance between 2 and 6 ohms?
Yes → Go To 7
→ Repair or replace the Generator as necessary.
No
7
Turn the ignition off.
With a voltmeter, measure and record the voltage between the Battery terminals.
Disconnect the ECM harness connectors.
Remove the ASD Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD Relay connector.
Turn the ignition on.
Measure the voltage of the ASD Relay Output circuits and Battery(+) Sense circuit in
the ECM C1 harness connector.
Are all voltage measurements within 0.5 volt of each other?
Yes → Go To 8
→ Repair the circuit that had high resistance.
No
8
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Generator Field harness connector.
Remove the ASD Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD Relay connector.
Turn the ignition on.
Measure the voltage of the Generator Field Control circuit.
Is the voltage below 1.0 volt?
Yes → Go To 9
→ Repair the Generator Field Control circuit for a short to voltage.
No
9
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 100 kohms?
Yes → Go To 10
→ Repair the Generator Field Control circuit for a short to ground.
No
10
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Generator Field harness connector.
Measure the resistance of the Generator Field Control circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 11
→ Repair the Generator Field Control circuit for an open.
No
ACTION
Perform CHARGING VERIFICATION - VER-3.
Perform CHARGING VERIFICATION - VER-3.
Perform CHARGING VERIFICATION - VER-3.
Perform CHARGING VERIFICATION - VER-3.
Perform CHARGING VERIFICATION - VER-3.
DRIVEABILITY - DIESEL
Continued
121
APPLICABILITY
All
All
All
All
All
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