Circuit/System Testing

NOTE:

You must perform Circuit/System Verification first.

Vehicle OFF, disconnect the X1 harness connector at the T18 Battery Charger. Vehicle in Service Mode.
Verify the scan tool Battery Charger DC Output Status Duty Cycle parameter is less than 10%.
- If 10% or greater
1. Vehicle OFF, disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
2. Test for infinite resistance between the DC voltage sensor circuit terminal 3 and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance, replace the K114B Hybrid/EV Powertrain Control Module 2.
- Go to next step: If less than 10%
Install a 3 A fused jumper wire between the DC voltage sensor circuit terminal 3 and the ground circuit terminal 2.
Verify the scan tool Battery Charger DC Output Status Duty Cycle parameter is greater than 90%.
- If 90% or less
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 DC voltage sensor circuit terminal 3 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. Vehicle OFF.
4. Test for less than 2 Ω in the DC voltage sensor 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 greater than 90%
Replace the T18 Battery Charger.