Circuit/System Testing

Vehicle OFF and all vehicle systems OFF. It may take up to 2 min for all vehicle systems to power down. Disconnect the X9 harness connector at the T24 Battery Charger - DC.
Test for less than 10 Ω between the ground circuit terminal 9 and ground.
- If 10 Ω or greater
1. Vehicle OFF, disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K114B Hybrid/EV Powertrain Control Module 2.
- Go to next step: If less than 10 Ω
Vehicle in Service Mode.
Test for 4.8 - 5.2 V between the 5 V reference circuit terminal 8 and ground.
- If less than 4.8 V
1. Vehicle OFF, disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
2. Test for infinite resistance between the 5 V reference circuit terminal 8 X9 and ground.
  - If less infinite resistance, repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
3. Test for infinite resistance between the 5 V reference circuit terminal 5 X2 and ground.
  - If less infinite resistance, repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
4. Test for less than 2 Ω in the 5 V reference circuit terminal 8 X9 end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit
  - If less than 2 Ω, replace the K114B Hybrid/EV Powertrain Control Module 2.
- If 5.2 V or greater
1. Vehicle OFF, disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Vehicle in Service Mode.
2. Test for less than 1 V between the 5 V reference circuit terminal 8 X9 and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - Go to next step: If less than 1 V
3. Test for less than 1 V between the 5 V reference circuit terminal 5 X2 and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the K114B Hybrid/EV Powertrain Control Module 2.
- Go to next step: If within the specified range
Test for less than 1 V between the signal circuit terminal 10 X9 and ground.
- If 1 V or greater
1. Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Vehicle in Service Mode.
2. Test for less than 1 V between the signal circuit and ground.
  - If between 1 - 5 V, repair the short to voltage on the circuit.
  - If greater than 5 V, repair the short to voltage on the circuit and replace the T24 Battery Charger - DC.
  - Go to next step: If less than 1 V
3. Replace the K114B Hybrid/EV Powertrain Control Module 2.
4. Verify that DTC P3002, P3003, P301F, or P3020 does not set while operating the vehicle within the Conditions for Running the DTC.
  - If any of the DTCs are set, replace the T24 Battery Charger - DC.
  - Go to next step: If none of the DTCs are set
5. All OK.
- Go to next step: If less than 1 V
Vehicle OFF, install a 3 A fused jumper wire between the signal circuit terminal 10 and the 5 V reference circuit terminal 8. Vehicle in Service Mode.
Verify the scan tool DC Positive Supply Isolation Voltage parameter is greater than 500 V.
- If less than 500 V
1. Test for infinite resistance between the signal circuit and ground.
  - If less infinite resistance, repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
2. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K114B Hybrid/EV Powertrain Control Module 2.
- Go to next step: If 500 V or greater
Replace the T24 Battery Charger - DC.