3.2CL & 3.2TL

Start engine and listen for clicking sound at fuel injector on suspect cylinder. If injector clicks, go to next step. If injector does not click, check for open or short in harness between suspect fuel injector and PCM. See WIRING DIAGRAMS article. If wiring is okay, replace fuel injector, and recheck. If symptom or DTC is gone, replace original fuel injector. If DTC resets, substitute known-good PCM and recheck. If symptom or DTC is gone, replace original PCM.
Check and record freeze data. Perform PCM reset procedure and clear DTC(s). See PCM RESET PROCEDURE/CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. Exchange spark plug from suspect cylinder with one from another cylinder. Connect scan tool. Test drive vehicle several times in freeze data range or under various conditions if there is no freeze data recorded. If DTC P0301, P0302, P0303, P0304, P0305, P0306 or temporary DTC P1399 is set, go to next step. If DTC P0301, P0302, P0303, P0304, P0305, P0306 or temporary DTC P1399 is not set, problem is intermittent, possibly due to fouling spark plug. Misfire is not detected at this time. If misfire follows spark plug to different cylinder, replace spark plug. If misfire remains in same cylinder, go to next step.
Remove ignition coil cover. Exchange ignition coil from suspect cylinder with one from another cylinder. Start engine and let idle for two minutes. Test drive vehicle several times in freeze data range or under various conditions if there is no freeze data recorded. If DTC P0301, P0302, P0303, P0304, P0305, P0306 or temporary DTC P1399 is set, go to next step. If DTC P0301, P0302, P0303, P0304, P0305, P0306 or temporary DTC P1399 is not set, problem is intermittent, possibly due to ignition coil fouling.
Determine which cylinder had misfire. If misfire followed ignition coil that was exchanged, replace ignition coil. If misfire stayed in same cylinder, go to next step.
Turn ignition switch off. Disconnect ignition coil 3-pin harness connector from suspect cylinder. See Fig 1 . Turn ignition switch back on. Measure voltage between ground and ignition coil 3-pin harness connector terminal No. 3 (Black/Yellow wire). If battery voltage is present go to next step. If battery voltage is not present, repair open or short in Black/Yellow wire between ignition coil 3-pin harness connector terminal No. 3 and No. 11 IG COIL fuse (15-amp) in driver's under-dash fuse/relay box. See WIRING DIAGRAMS article. Repair as necessary.

Fig 1: Identifying 3-Pin Ignition Coil Connector (3.2CL & 3.2TL)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn ignition switch off. Check for continuity between ground and suspect ignition coil 3-pin harness connector terminal No. 2 (Black wire). See Fig 1 . If continuity is present, go to next step. If continuity is not present, repair open in Black wire between ground terminal G101 and ignition coil 3-pin harness connector terminal No. 2.

Disconnect PCM 31-pin harness connector. Check for continuity between ground and PCM 31-pin harness connector terminal(s). See DTC/PCM 31-PIN CONNECTOR TERMINAL IDENTIFICATION table. If no continuity is present, go to next step. If continuity is present, repair short in wire between PCM 31-pin harness connector and ignition coil 3-pin harness connector.

DTC/PCM 31-PIN CONNECTOR TERMINAL IDENTIFICATION

Suspect Cylinder	DTC	PCM Terminal No.	Wire Color
No. 1	P0301	4	Yellow/Green
No. 2	P0302	14	Blue/Red
No. 3	P0303	3	White/Blue
No. 4	P0304	13	Brown
No. 5	P0305	12	Black/Red
No. 6	P0306	23	Brown/White

Reconnect PCM 31-pin harness connector. Connect fused jumper wire between ground and suspect ignition coil 3-pin harness connector terminal No. 1. See Fig 1 . See DTC/IGNITION COIL TERMINAL IDENTIFICATION table. Check for continuity between ground and PCM 31-pin connector terminal(s). See DTC/PCM 31-PIN CONNECTOR TERMINAL IDENTIFICATION table. If continuity is present, go to next step. If continuity is not present, repair open wire between PCM 31-pin harness connector and ignition coil 3-pin harness connector terminal No. 1. See WIRING DIAGRAMS article. Repair as necessary.

DTC/IGNITION COIL TERMINAL IDENTIFICATION

Suspect Cylinder	DTC	Wire Color
No. 1	P0301	Yellow/Green
No. 2	P0302	Blue/Red
No. 3	P0303	White/Blue
No. 4	P0304	Brown
No. 5	P0305	Black/Red
No. 6	P0306	Brown/White

Disconnect PCM 25-pin harness connector. Turn ignition switch on. Measure voltage between ground and PCM 25-pin harness connector terminal(s). See DTC/PCM 25-PIN CONNECTOR TERMINAL IDENTIFICATION table. If battery voltage is present, go to next step. If battery voltage is not present, go to step 14 .

DTC/PCM 25-PIN CONNECTOR TERMINAL IDENTIFICATION

Suspect Cylinder	DTC	PCM Terminal No.	Wire Color
No. 1	P0301	11	Brown
No. 2	P0302	5	Red
No. 3	P0303	15	Blue
No. 4	P0304	4	Yellow
No. 5	P0305	3	Black/Red
No. 6	P0306	6	White/Blue

Remove upper intake manifold. See INTAKE MANIFOLD under REMOVAL & INSTALLATION in appropriate article in ENGINES. Disconnect fuel injector 2-pin harness connector on suspect cylinder. Measure resistance between fuel injector terminals No. 1 and 2. If resistance reading is 10-13 ohms, go to next step. If resistance reading is not 10-13 ohms, replace fuel injector. See FUEL RAILS & INJECTORS under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article.
Exchange fuel injector from suspect cylinder with one from another cylinder. Install upper intake manifold. See INTAKE MANIFOLD under REMOVAL & INSTALLATION in appropriate article in ENGINES. Start engine and let engine idle for 2 minutes. Test drive vehicle several times in freeze data range or under various conditions if there is no freeze data recorded.
If DTC P0301, P0302, P0303, P0304, P0305, P0306 or temporary DTC P1399 is set, go to next step. If DTC P0301, P0302, P0303, P0304, P0305, P0306 or temporary DTC P1399 is not set, misfire condition is not detected at this time. Possible intermittent or poor fuel injector connection.
Determine which cylinder had misfire. If misfire follows injector to another cylinder, replace faulty fuel injector. See FUEL RAILS & INJECTORS under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article. If misfire remains in same cylinder, check engine compression. See PRELIMINARY INSPECTION & ADJUSTMENTS in BASIC DIAGNOSTIC PROCEDURES article. Repair as necessary. If compression is okay, substitute known-good PCM, then recheck. If symptom or indication goes away, replace original PCM.
Turn ignition switch off. Remove upper intake manifold. See INTAKE MANIFOLD under REMOVAL & INSTALLATION in appropriate article in ENGINES. Disconnect fuel injector 2-pin harness connector from suspect cylinder. Measure voltage between ground and fuel injector 2-pin harness connector terminal No. 1 (Yellow/Black wire). If battery voltage is present, go to next step. If battery voltage is not present, check for open in Yellow/Black wire between PGM-FI main relay 7-pin harness connector terminal No. 6 and fuel injector 2-pin harness connector terminal No. 1. See WIRING DIAGRAMS article. Repair as necessary.
Turn ignition switch off. Check continuity between ground and PCM 25-pin harness connector terminal(s). See DTC/PCM 25-PIN CONNECTOR TERMINAL IDENTIFICATION table. If continuity is not present, go to next step. If continuity is present, repair short in wiring between PCM 25-pin harness connector and fuel injector 2-pin harness connector.

Connect fused jumper wire between ground and fuel injector 2-pin harness connector terminal No. 2. See DTC/FUEL INJECTOR TERMINAL IDENTIFICATION table. Check for continuity between ground and PCM 25-pin harness connector(s). See DTC/PCM 25-PIN CONNECTOR TERMINAL IDENTIFICATION table. If continuity is present, replace fuel injector. If continuity is not present, repair open wire between PCM 25-pin harness connector and fuel injector 2-pin harness connector terminal No. 2.

DTC/FUEL INJECTOR TERMINAL IDENTIFICATION

Suspect Cylinder	DTC	Wire Color
No. 1	P0301	Brown
No. 2	P0302	Red
No. 3	P0303	Blue
No. 4	P0304	Yellow
No. 5	P0305	Black/Red
No. 6	P0306	White/Blue