Check cable for short circuit to ground
integrity for the relevant fault code,
P0300 will require all terminals/cables
listed to be checked:
P0301
- Engine ECM pin C23 to ground
- Engine ECM pin B7 to ground
- Engine ECM pin B33 to ground
P0302
- Engine ECM pin C6 to ground
- Engine ECM pin B8 to ground
- Engine ECM pin B22 to ground
P0302
- Engine ECM pin C7 to ground
- Engine ECM pin B5 to ground
- Engine ECM pin B11 to ground
Locate and rectify wiring
fault, proceed to test 9
Check cable for short circuit to supply box
for the relevant
fault code, P0300 will require all
terminals/cables listed to be checked:
P0301
- Engine ECM pin C23 to EMS relay pin
5
- Engine ECM pin B7 to EMS relay pin 5
- Engine ECM pin B33 to EMS relay pin
5
P0302
- Engine ECM pin C6 to EMS relay pin 5
- Engine ECM pin B8 to EMS relay pin 5
- Engine ECM pin B22 to EMS relay pin
5
P0303
1. Engine ECM pin C7 to EMS relay pin 5
2. Engine ECM pin B5 to EMS relay pin 5
3. Engine ECM pin B11 to EMS relay pin
5
For P0301 detach the
ignition coils from their
brackets (see Ignition Coils
- Removal) then proceed
to test 4
For P0302 and P0303
proceed to test 4
Locate and rectify wiring
fault, proceed to test 9