Circuit/System Testing
- Vehicle OFF, disable the high voltage at the K1 14V Power Module and the T6 Power Inverter Module. Refer to High Voltage Disabling
.WARNING:
Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
- Identify how to disable high voltage.
- Identify how to test for the presence of high voltage.
- Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
NOTE: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing. - Test for less than 10 Ω between the 300V circuit terminals listed below:NOTE: During high voltage disabling, the X1 connector at the K1 14V Power Module and the X3 connector at the T6 Power Inverter Module should have been disconnected. The following test assumes that additional high voltage connectors, including those at the A4 Hybrid/EV Battery Pack, are still connected.
- 300V+: K1 14V Power Module circuit terminal A X1 and T6 Power Inverter Module circuit terminal 2 X3
- 300V-: K1 14V Power Module circuit terminal B X1 and T6 Power Inverter Module circuit terminal 1 X3
- If 10 Ω or greater
Repair the open/high resistance in the circuit.
- If less than 10 Ω
- Verify DTC P1ABC or P1ABD is not set.
- If any of the DTCs are set
- Program the K1 14V Power Module.
- Verify the DTC does not set.
- If the DTC sets, replace the K1 14V Power Module.
- If the DTC does not set
- All OK.
- If none of the DTCs are set
- All OK.