Check cable continuity:
All Fault Codes
- Engine ECM pin A32 to throttle
position sensor connector pin 2
- Engine ECM pin A20 to throttle
position sensor connector pin 5
P0220, PO221, PO222, P2135
- Engine ECM pin A38 to throttle
position sensor connector pin 4
- Engine ECM pin A26 to throttle
position sensor connector pin 3
Locate and rectify wiring
fault, proceed to test 5
Check cable for short circuit:
P0120, PO121
- Engine ECM pin A26 to Engine ECM
pin A32
- Engine ECM pin A32 to Engine ECM
pin A38
P0120, PO121, PO220, P0221
- Engine ECM pin A26 to Engine ECM
pin A38
P0220, PO221
- Engine ECM pin A32 to Engine ECM
pin A38
P0220, PO221, P2135
- Engine ECM pin A26 to Engine ECM
pin A20
- Engine ECM pin A26 to Ground
- Engine ECM pin A38 to Engine ECM
pin A20
- Engine ECM pin A38 to Ground
Renew throttle position
sensor, proceed to test 5
Locate and rectify wiring
fault, proceed to test 5
Reconnect harness, clear fault code
and run engine to verify fault cleared.
Action complete - quit test