Operation CHARM: Car repair manuals for everyone.
Home >> Cadillac Truck >> 2011 >> Escalade RWD V8-6.0L Hybrid >> Repair and Diagnosis >> Starting and Charging >> Power and Ground Distribution >> Auxiliary Power Outlet >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Power Outlet Receptacle Inoperative (120 VAC)

Power Outlet Receptacle Inoperative (120 VAC)




Power Outlet Receptacle Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructionsprovides an overview of each diagnostic category.

Diagnostic Fault Information






Circuit/System Description

The accessory DC/AC power inverter module converts 12 V direct current (DC) battery voltage to 110 V at 60 Hertz (Hz) alternating current (AC) in order to operate AC powered devices. The accessory DC/AC power inverter module provides up to 150 watts of power. The accessory DC/AC power inverter module is connected to a chassis ground circuit and receives fuse protected battery voltage.

The accessory power receptacle - 110 V AC has an internal switch, that detects when an AC powered device is plugged into the receptacle. When the ignition is ON and an AC powered device is plugged into the accessory power receptacle - 110 V AC, the normally open switch in the accessory power receptacle - 110 V AC, closes. When the accessory DC/AC power inverter module detects the voltage from the accessory power receptacle - 110 V AC switch, the inverter module begins to supply 110 V AC to the accessory power receptacle - 110 V AC after a 1.5 second delay.

Reference Information
Schematic Reference

Cigar Lighter/Power Outlet Schematics [1][2]Auxiliary Power Outlet
Connector End View Reference

Component Connector End Views Connector End Views By Name
Description and Operation

Power Outlets Description and Operation Description and Operation
Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

Circuit/System Verification

Warning

To help avoid personal injury, always treat the accessory power receptacle, accessory DC/AC power inverter module, AC circuit wires, and connectors as if AC high-voltage is present.

1. Ignition OFF, test for 12.0-15.0 V across the battery terminals.

• If not within the specified range, refer to Battery Inspection/Test Battery Inspection/Test.

2. Ignition ON, connect an AC power extension cord to the X81 accessory power receptacle - 110 V AC. Inserting the extension cord plug into the X81 accessory power receptacle - 110 V AC turns the T1 accessory DC/AC power inverter module ON.
3. Verify the receptacle indicator light comes ON.
4. Test for 110-120 V between the terminals of the extension cord.
5. Test for 59-61 Hz AC between the terminals of the extension cord.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at the T1 Accessory DC/AC power inverter module.
2. Test for less than 10 ohm between the ground circuit terminal 1 X2 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Verify that a test lamp illuminates between the B+ circuit terminal 2 X2 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. Ignition ON, test for less than 1.0 V between the AC circuit terminals listed below and ground:

* Terminal 4 X1
* Terminal 6 X1

• If greater than the specified range, test the AC circuit for a short to voltage.

5. Ignition OFF, test for infinite resistance between the AC circuit terminals listed below and ground:

* Terminal 4 X1
* Terminal 6 X1

• If less than the specified value, test the AC circuit for a short to ground.

6. Disconnect the harness connector at the X81 accessory power receptacle - 110 V AC.
7. Ignition ON, verify a test lamp illuminates between the control circuit terminal 4 and ground.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

8. Verify a test lamp does not illuminate between the signal terminal 1 and ground.

• If the test lamp illuminates, test the signal circuit for a short to voltage. If the circuit tests normal, replace the T1 Accessory DC/AC power inverter module.

9. Connect a 3 A fused jumper between the control terminal 4 and the signal terminal 1.
10. Ignition ON, verify that a test lamp illuminates between the T1 Accessory DC/AC power inverter module signal circuit terminal 2 X1 and ground.

• If the test lamp does not illuminate, test the signal circuit for a short to ground or an open/high resistance.

11. Ignition OFF, connect the harness connectors at the T1 Accessory DC/AC power inverter module. Ignition ON, test for 110-120 V AC between the X81 accessory power receptacle - 110 V AC terminal 3 and 6.

• If not within the specified range, check both AC circuits for an open/high resistance. If all circuits test normal, replace the T1 Accessory DC/AC power inverter module.

12. If all circuits test normal, replace the X81 accessory power receptacle - 110 V AC.

Component Testing

Accessory Power Outlet
1. Ignition OFF, remove the X80 accessory power receptacle - 110 V AC.
2. Test for greater than 1 M ohm between terminal 3 and terminal 6.

• If less than the specified range, replace the X80 accessory power receptacle - 110 V AC.

3. Test for less than 3 ohm between the following terminals:

* The terminal 3 and the applicable receptacle terminal
* The terminal 6 and the applicable receptacle terminal

• If greater than the specified range, replace the X80 accessory power receptacle - 110 V AC.

4. Test for infinite resistance between terminal 4 and terminal 1.

• If not the specified value, replace the X80 accessory power receptacle - 110 V AC.

5. Connect an AC powered device to the X80 accessory power receptacle - 110 V AC.
6. Test for less than 3 ohm between terminal 4 and terminal 1.

• If greater than the specified range, replace the X80 accessory power receptacle - 110 V AC.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Accessory Power Receptacle Replacement Accessory Power Receptacle Replacement
* Control Module References Programming and Relearningfor control module replacement, setup, and programming

pro multis · About Operation CHARM