Testing For Open Circuits, High Resistance and Loose Terminals

Use an ohmmeter to check cables for opens, loose terminals or high resistance as follows:
1. Remove cable from spark plug.
2. Remove cable from the coil tower.
3. Connect the ohmmeter between the spark plug end terminal and the coil end terminal.
- Make sure ohmmeter probes are in good contact.
- Resistance should be within tolerance shown in the cable resistance chart.
- If resistance is not within tolerance, replace cable assembly. Test all spark plug cables in the same manner.

- If no problems are found, SEE Ignition System/System Diagnosis/Testing For Spark At Coil.

SECONDARY IGNITION CABLE RESISTANCE
Minimum Maximum
Cables #1 & #4 3,500 Ohms 4,900 Ohms
Cables #2 & #3 2,950 Ohms 4,100 Ohms