Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.

Ignition/Vehicle & All vehicle systems - Off
Disconnect the electrical connector: K115 Reductant Control Module
Test for less than 1 V between the test points: Ignition circuit terminal 20 & Ground
- If 1 V or greater
1. Remove the component: F47UA Fuse@X50A Fuse Block - Underhood
2. Test for less than 1 V between the test points: F47UA Fuse - Input terminal & Ground
  - If 1 V or greater - Replace the component: KR73 Ignition Main Relay
  - Go to next step: If less than 1 V
3. Test for less than 1 V between the test points: Ignition circuit terminal 20@Control module harness & Ground
  - If 1 V or greater - Repair the short to voltage on the circuit.
- Go to next step: If less than 1 V
Ignition/Vehicle - On
Test for greater than 9 V between the test points: Ignition circuit terminal 20 & Ground
- If 9 V or less
1. Ignition/Vehicle & All vehicle systems - Off
2. Test for infinite resistance between the test points: Ignition circuit terminal 20 & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
3. Test for less than 2 ohms between the test points: Ignition circuit terminal 20@Component harness & F47UA Fuse@X50A Fuse Block - Underhood
  - If 2 ohms or greater - Repair the open/high resistance in the circuit.
  - If less than 2 ohms - Replace the component: KR73 Ignition Main Relay
- Go to next step: If greater than 9 V
Replace the component: K115 Reductant Control Module