Ignition Coil Relay Circuit Troubleshooting

1.	Check the No. 2 (15A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 2. NO - Replace the fuse.n

2.	Remove the ignition coil relay from the under-dash fuse/relay box and test it. Is the relay OK? YES - Go to 3. NO - Replace the ignition coil relay.n

3.	Measure the voltage between ignition coil relay 4P socket terminal No. 1 then No. 4 and body ground. IGNITION COIL RELAY 4P SOCKET Terminal side of female terminals Is there battery voltage? YES - Go to 4. NO - Replace the under-dash fuse/relay box.n

Check for continuity between ignition coil relay 4P socket terminal No. 2 and the No. 1 igniton coil 3P connector terminal No. 3.

IGNITION COIL RELAY 4P SOCKETTerminal side of
female terminalsNo.1 IGNITION COIL 3P CONNECTORWire side of
female terminals

Is there continuity?

YES - Go to 5.

NO - Repair an open in the wire between ignition coil relay 4P socket terminal No. 2 and ignition coil 3P connector terminal No. 3.n

Check for continuity between ignition coil relay 4P socket terminal No. 3 and body ground.

IGNITION COIL RELAY 4P SOCKETTerminal side of female terminals

Is there continuity?

YES - Repair a short in the wire between ignition coil relay 4P socket terminal No. 3 and ECM/PCM.n

NO - Repair an open in the wire between ignition coil relay 4P socket terminal No. 3 and ECM/PCM.n