Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
B+ | 1 | 1 | -- | -- |
Accessory Voltage | 1 | 1 | -- | -- |
Control | 1 | 1 | 2 | -- |
Phase A | 1 | 1 | 1 | -- |
Neutral | 1 | 1 | 1 | -- |
Ground | -- | 1 | 1 | -- |
1. Accessory AD/DC power control module OFF 2. Accessory AD/DC power control module ON | ||||
Circuit/System Description
Battery voltage is supplied to the accessory AC/DC power control module from the 25-amp PWR OUTLET fuse. When the ignition is turned ON, ignition voltage is supplied to the auxiliary power outlet using the accessory voltage circuit. When a 115-volt AC powered device is plugged into the auxiliary power outlet, with the ignition ON, the normally open plug-inserted switch, located internally in the auxiliary power outlet, closes. The accessory AC/DC power control module detects a voltage signal on the control circuit, and the accessory AC/DC power control module enables the 115 V AC to the auxiliary power outlet.
Reference Information
Schematic Reference
Cigar Lighter/Power Outlet Schematics
Connector End View Reference
Power Outlet Connector End Views
Description and Operation
Power Outlets Description and Operation
Electrical Information Reference
Circuit/System Verification
Ignition ON, verify that a 115-volt AC powered device functions when plugged into the auxiliary power outlet.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the auxiliary power outlet.
- Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 4 and ground.
- Ignition OFF, disconnect the harness connectors at the accessory AC/DC power control module.
- Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the ground circuit terminal 1 X2 and ground.
- Verify that a test lamp illuminates between the B+ circuit terminal 2 X2 and ground.
- Ignition OFF, connect the harness connector to the auxiliary power outlet.
- Test for less than 2 ohms between the neutral circuit terminal 4 X1 and the neutral receptacle terminal at the auxiliary power outlet.
- Test for infinite resistance between the neutral circuit terminal 4 X1 and ground.
- Test for less than 2 ohms between the phase A circuit terminal 6 X1 and the phase A receptacle terminal at the auxiliary power outlet.
- Test for infinite resistance between the phase A circuit terminal 6 X1 and ground.
- Test for greater than 10 ohms between the phase A circuit terminal 6 X1 and the neutral circuit terminal 4 X1.
- Connect a 115-volt AC powered device to the auxiliary power outlet.
- Ignition ON, verify that a test lamp illuminates between the control circuit terminal 2 X1 and ground.
- If all circuits test normal, replace the accessory AC/DC power control module.
| ⇒ | If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. |
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. |
| ⇒ | If greater than the specified range, test the neutral circuit for an open/high resistance. If the circuit tests normal, test or replace the auxiliary power outlet. |
| ⇒ | If less than the specified value, test the neutral circuit for a short to ground. If the circuit tests normal, test or replace the auxiliary power outlet. |
| ⇒ | If greater than the specified range, test the phase A circuit for an open/high resistance. If the circuit tests normal, test or replace the auxiliary power outlet. |
| ⇒ | If less than the specified value, test the phase A circuit for a short to ground. If the circuit tests normal, test or replace the auxiliary power outlet. |
| ⇒ | If less than the specified value, test the phase A circuit and the neutral circuit for a shorted together condition. If the circuits test normal, test or replace the auxiliary power outlet. |
| ⇒ | 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, test or replace the auxiliary power outlet. |
Component Testing
auxiliary power outlet
- Ignition OFF, disconnect the harness connector at the auxiliary power outlet.
- Test for less than 2 ohms between the phase A circuit terminal 6 and the phase A receptacle terminal at the auxiliary power outlet.
- Test for less than 2 ohms between the neutral outlet circuit terminal 3 and the neutral receptacle terminal at the auxiliary power outlet.
- Test for infinite resistance between the ignition voltage circuit terminal 4 and the control circuit terminal 1 at the auxiliary power outlet.
- Connect a 115-volt AC powered device to the auxiliary power outlet.
- Test for less than 2 ohms between the ignition voltage circuit terminal 4 and the control circuit terminal 1 at the auxiliary power outlet.
| ⇒ | If greater than the specified range, replace the auxiliary power outlet. |
| ⇒ | If greater than the specified range, replace the auxiliary power outlet. |
| ⇒ | If not the specified value, replace the auxiliary power outlet. |
| ⇒ | If greater than the specified range, replace the auxiliary power outlet. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
