Tahoe 2WD V8-6.0L Hybrid (2008)
the 115 VAC auxiliary power outlet.
8. Ignition OFF, connect the harness connector X1 at the accessory AC/DC power control module.
9. Ignition ON, insert an AC voltage powered device into the 115 VAC auxiliary power outlet. Verify the AC indicator LED is illuminated.
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If the indicator does not illuminate, test the APO neutral and the APO phase A circuits for a short to ground or an open/high resistance. If both
circuits test normal, replace the AC/DC power control module.
10. If all circuits test normal, test or replace the 115 VAC auxiliary power outlet.
Component Testing
1. Ignition OFF, disconnect the harness connector at the 115 VAC auxiliary power outlet.
2. Test for less than 1.0 ohm between the APO phase A outlet circuit terminal 6 and the APO phase A 115 VAC auxiliary power outlet connector.
^
If greater than the specified range, test the outlet circuit for an open/high resistance. If the circuit tests normal, replace the 115 VAC auxiliary
power outlet.
3. Test for less than 1.0 ohm between the APO neutral outlet circuit terminal 3 and the APO neutral 115 VAC auxiliary power outlet connector.
^
If greater than the specified range, test the outlet circuit for an open/high resistance. If the circuit tests normal, replace the 115 VAC auxiliary
power outlet.
4. Test for infinite resistance between the reference circuit terminal 4 and the control circuit terminal 1.
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If not the specified value, replace the 115 VAC auxiliary power outlet.
5. Test for less than 1.0 ohm between the reference circuit terminal 4 and the control circuit terminal 1 with a AC voltage powered device in the 115
VAC auxiliary power outlet.
^
If greater than the specified range, replace the 115 VAC auxiliary power outlet.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests and Procedures
