Fault Code | Possible cause | Action |
P1231 | Fuel pump relay short circuit to ground or open circuit | Check if pump runs briefly when ignition is switched on. Ensure fuel pump relay connector is secure. Disconnect ECM and proceed to pinpoint test 1: |
P1232 | Fuel pump relay short circuit to battery positive | Disconnect fuel pump relay and proceed to pinpoint test 4: |
Pinpoint Tests
Test | Result | Action |
1. Check cable and terminal integrity: ECM pin 829 | OK | Disconnect fuel pump relay and proceed to test 2 |
Faulty | Rectify fault, proceed to test 5 | |
2. Check cable for short circuit to ground: ECM pin 829 to earth | OK | Proceed to test 3 |
Short circuit | Locate and rectify wiring fault, proceed to test 5 | |
3. Check cable continuity: ECM pin 829 to fuel pump relay pin 2 Fuel pump relay pin 1 to ECM pin A19 | OK | Proceed to test 4 |
Open circuit | Locate and rectify wiring fault, proceed to test 5 | |
4. Check cable for short circuit: ECM pin 829 to Alarm pin 1 or 3 | OK | Proceed to test 5 |
Short circuit | Locate and rectify wiring fault, proceed to test 5 | |
5. Reconnect harness, clear fault code and run diagnostic software function test to verify operation of fuel pump | OK | Action complete - quit test |
Fault still present | Contact Triumph service |