Circuit/System Testing
- Ignition OFF, disconnect the X1 harness connector at the X83 Auxiliary Audio Input. Ignition ON, radio ON.
- Test for less than 1 V between the signal circuits listed below and ground:
- left auxiliary audio signal circuit terminal 1
- right auxiliary audio signal circuit terminal 2
- auxiliary audio common signal circuit terminal 3
- If 1 V greater
- Ignition OFF, disconnect the harness connector at the T11 Multimedia Player Interface Module. Ignition ON.
- Test for less than 1 V between the signal circuit and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the T11 Multimedia Player Interface Module.
- If less than 1 V
- Ignition OFF, disconnect the harness connector at the T11 Multimedia Player Interface Module.
- Test for infinite resistance between the signal circuits listed below and ground:
- auxiliary audio common signal circuit terminal 3
- left auxiliary audio signal circuit terminal 12
- right auxiliary audio signal circuit terminal 13
- If less than infinite resistance
Repair the short to ground on the circuit.
- If infinite resistance
- Test for less than 5 Ω between the signal circuit terminals listed below:
- T11 Multimedia Player Interface Module X1 terminal 3 and the X83 Auxiliary Audio Input X1 terminal 3
- T11 Multimedia Player Interface Module X1 terminal 12 and the X83 Auxiliary Audio Input X1 terminal 1
- T11 Multimedia Player Interface Module X1 terminal 13 and the X83 Auxiliary Audio Input X1 terminal 2
- If 5 Ω greater
Repair the open/high resistance in the circuit.
- If less than 5 Ω
- Replace the X83 Auxiliary Audio Input. Connect all harness connectors.
- Connect and operate the EL-50334-20 Multi-Media Interface Tester (MIT).
- Verify DTC B1278 or DTC B1279 is not set.
- If DTC B1278 or DTC B1279 is set
Replace the T11 Multimedia Player Interface Module.
- If DTC B1278 or DTC B1279 is not set
- If DTC B1278 or DTC B1279 is set
- All OK.