( TL19E3AK72100090351FAAT00 )

DTC Troubleshooting: P0351 (71), P0352 (72), P0353 (73), P0354 (74)

DTC P0351:
No. 1 Cylinder Ignition Coil Circuit Malfunction
DTC P0352:
No. 2 Cylinder Ignition Coil Circuit Malfunction
DTC P0353:
No. 3 Cylinder Ignition Coil Circuit Malfunction
DTC P0354:
No. 4 Cylinder Ignition Coil Circuit Malfunction
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch to ON (II).

1. Clear the DTC with the HDS.

1. Start the engine.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0351, P0352, P0353, and/or P0354 indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the ignition coil and the ECM/PCM.■

1. Turn the ignition switch to LOCK (0).

1. Exchange the ignition coil from the problem cylinder with one from another cylinder.

1. Start the engine.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC indicated at the exchanged cylinder?

YES | - | Replace the faulty ignition coil , then go to Step 25 .
NO | - | Go to Step 9 .

1. Turn the ignition switch to LOCK (0).

1. Check the No. 13 IG COIL (15 A) fuse in the under-hood fuse/relay box.

Is the fuse OK?

YES | - | Go to Step 11 .
NO | - | Go to Step 12 .

1. Test the ignition coil relay (A) in the under-hood fuse/relay box .

Is the ignition coil relay OK?

YES | - | Go to Step 15 .
NO | - | Replace the ignition coil relay, then go to Step 25 .

1. Remove the ignition coil relay (A) from the under-hood fuse/relay box.

1. Disconnect all ignition coil 3P connectors.

1. Check for continuity between No. 1 ignition coil 3P connector terminal No. 3 and body ground.

Is there continuity?

YES | - | Repair short in the wire between the ignition coils and the ignition coil relay. Also replace the No. 13 IG COIL (15 A) fuse, then go to Step 25 .
NO | - | Check the under-hood fuse/relay box, and replace it if needed, then go to Step 25 .

1. Reinstall the ignition coil relay.

1. Disconnect the ignition coil 3P connector from the problem cylinder.

1. Turn the ignition switch to ON (II).

1. Measure the voltage between ignition coil 3P connector terminal No. 3 of the problem cylinder and body ground (see table).

   PROBLEM CYLINDER | DTC
   --- | ---
   No. 1 | P0351
   No. 2 | P0352
   No. 3 | P0353
   No. 4 | P0354

Is there battery voltage?

YES | - | Go to Step 19 .
NO | - | Repair open in the wire between the ignition coil and the ignition coil relay, then go to Step 25 .

1. Turn the ignition switch to LOCK (0).

1. Check for continuity between ignition coil 3P connector terminal No. 2 of the problem cylinder and body ground (see table).

   PROBLEM CYLINDER | DTC
   --- | ---
   No. 1 | P0351
   No. 2 | P0352
   No. 3 | P0353
   No. 4 | P0354

Is there continuity?

YES | - | Go to Step 21 .
NO | - | Repair open in the wire between the ignition coil and G102, then go to Step 25 .

1. Jump the SCS line with the HDS.

1. Disconnect ECM/PCM connector C (49P).

1. Check for continuity between body ground and the appropriate ECM/PCM connector terminal of the problem cylinder (see table).

   PROBLEM CYLINDER | DTC | ECM/PCM TERMINAL | WIRE COLOR
   --- | --- | --- | ---
   No. 1 | P0351 | C15 | YEL/GRN
   No. 2 | P0352 | C16 | BLU/RED
   No. 3 | P0353 | C17 | WHT/BLU
   No. 4 | P0354 | C18 | BRN

Is there continuity?

YES | - | Repair short in the wire between the ECM/PCM and the ignition coil, then go to Step 25 .
NO | - | Go to Step 24 .

1. Check for continuity between appropriate ignition coil 3P connector terminal No. 1 and the appropriate ECM/PCM connector terminal of the problem cylinder (see table).

   PROBLEM CYLINDER | DTC | ECM/PCM TERMINAL | WIRE COLOR
   --- | --- | --- | ---
   No. 1 | P0351 | C15 | YEL/GRN
   No. 2 | P0352 | C16 | BLU/RED
   No. 3 | P0353 | C17 | WHT/BLU
   No. 4 | P0354 | C18 | BRN

Is there continuity?

YES | - | Go to Step 31 .
NO | - | Repair open in the wire between the ECM/PCM and the ignition coil, then go to Step 25 .

1. Turn the ignition switch to LOCK (0).

1. Reconnect all connectors.

1. Turn the ignition switch to ON (II).

1. Reset the ECM/PCM with the HDS.

1. Do the ECM/PCM idle learn procedure.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0351, P0352, P0353, and/or P0354 indicated?

YES | - | Check for poor connections or loose terminals at the ignition coil and the ECM/PCM, then go to Step 1 .
NO | - | Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■

1. Reconnect all connectors.

1. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0351, P0352, P0353, and/or P0354 indicated?

YES | - | Check for poor connections or loose terminals at the ignition coil and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to Step 1 .
NO | - | If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■