DTC P0350, P0351, P0352, P0353 [YF (2.0L Zetec)]

id0102d0843900

DTC P0350

DTC P0351

DTC P0352

DTC P0353

Ignition coil No.1, No.2, No.3, No.4 control circuit

DETECTION CONDITION

• If the PCM detects abnormal current value when the ignition coils are energized under the following conditions, the PCM determines that the ignition coils control circuit has a malfunction.

POSSIBLE CAUSE

• Ignition coil malfunction
• Connector or terminal malfunction
• Open circuit between ignition coil terminal B and ignition switch
• Open circuit between ignition coil terminal A and PCM terminal 26
• Open circuit between ignition coil terminal C and PCM terminal 52
• Short to power or ground between ignition coil terminal A and PCM terminal 26
• Short to power or ground between ignition coil terminal C and PCM terminal 52
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME DATA on repair order, then go to next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3
INSPECT POOR CONNECTION OF IGNITION COIL CONNECTOR
• Turn the ignition switch off.
• Disconnect the ignition coil connector.
• Inspect for poor connection (such as damaged, pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 10.
No
Go to next step.
4
INSPECT IGNITION COILS ELECTRICAL MALFUNCTION
• Inspect the ignition coils.
• Is the ignition coils normal?
Yes
Go to next step.
No
Replace the ignition coil, then go to Step 10.
5
INSPECT CONTROL CIRCUIT FOR SHORT TO POWER
• Turn the ignition switch to the ON position (engine off).
• Measure voltage between following terminal and body ground:
- Ignition coil terminal A (wiring harness-side)
- Ignition coil terminal C (wiring harness-side)
• Is voltage B+?
Yes
Repair or replace wiring harness, then go to Step 10.
No
Go to next step.
6
INSPECT CONTROL CIRCUIT FOR SHORT TO GROUND
• Turn the ignition switch off.
• Inspect continuity between following terminal and body ground:
- Ignition coil terminal A (wiring harness-side)
- Ignition coil terminal C (wiring harness-side)
• Is there continuity?
Yes
Repair or replace wiring harness, then go to Step 10.
No
Go to next step.
7
INSPECT POOR CONNECTION OF PCM CONNECTOR
• Turn the ignition switch off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged, pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair terminal, then go to Step 10.
No
Go to next step.
8
INSPECT CONTROL CIRCUIT MALFUNCTION FOR OPEN CIRCUIT
• Inspect continuity following terminals:
- Between ignition coil terminal A (wiring harness-side) and PCM terminal 26 (wiring harness-side)
- Between ignition coil terminal C (wiring harness-side) and PCM terminal 52 (wiring harness-side)
• Is there continuity?
Yes
Go to next step.
No
Repair or replace wiring harness, then go to Step 10.
9
INSPECT POWER CIRCUIT MALFUNCTION FOR OPEN CIRCUIT
• Inspect continuity following terminals:
- Between ignition coil terminal B (wiring harness-side) and ignition switch
• Is there continuity?
Yes
Go to next step.
No
Repair or replace wiring harness, then go to the next step.
10
VERIFY TROUBLESHOOTING OF DTC P0350, P0351, P0352, AND P0353 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC using WDS or equivalent.
• Perform KOER self-test.
• Is same DTC present?
Yes
Replace the PCM, then go to next step.
No
Go to next step.
11
VERIFY AFTER REPAIR PROCEDURE
• Perform "AFTER REPAIR PROCEDURE".
• Are any DTCs present?
Yes
Go to applicable DTC troubleshooting.
No
Troubleshooting completed.