LaCrosse FWD L4-2.4L (2011)
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. Verify that the battery voltage is 12.0-15.0 V.
‹› If the battery voltage is not within the specified range, refer to Battery Inspection/Test (See: Testing and Inspection/Component Tests and
General Diagnostics/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 at 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 connector at the T1 Accessory DC/AC power inverter module.
2. Test for less than 10 ohm between the ground circuit terminal 11 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 6 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 2
*
Terminal 7
‹› 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 2
*
Terminal 7
‹› If less than the specified value, test the AC circuit for a short to ground.
6. Disconnect the harness connectors at the X81 accessory power receptacle - 110 V AC.
7. Ignition ON, verify a test lamp illuminates between the control circuit terminals 1 X1 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 X2 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 1 X1 and the signal terminal 1 X2.
10. Ignition ON, verify that a test lamp illuminates between the T1 Accessory DC/AC power inverter module signal circuit terminal 12 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 connector 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 X1 and 3 X2.
‹› 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
