P1300high severityPowertrain
Igniter Circuit Malfunction No. 1
on 1997 Toyota 4Runner 3.0L V6 · RWD
What this code means
The ECM is not receiving the IGF signal from ignition coil No. 1.
Symptoms
- CEL
- Misfire cylinder 1
- Rough idle
- Poor acceleration
- Stalling
Common causes
- Faulty ignition coil
- Damaged coil harness
- Poor connector
- Bad spark plug
Diagnostic steps
- Test coil resistance
- Inspect connector
- Swap coils to test
- Check spark plug gap
Repair notes
Replace ignition coil No. 1.
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