Ford — Pinpoint Test B - Starter Does Not Crank

Testing & diagnosis · Starting system

From a Ford service manual — check it applies to your exact model before use.

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Procedure

1. Turn and hold the Ignition switch in the START position. Using an ohmmeter, measure for battery voltage at the starter solenoid START terminal.
2. Disconnect the starter lockout relay. Turn and hold the Ignition switch in the START position. Measure for battery voltage on Circuit 32A RD/LB at the starter lockout relay connector.
3. Key OFF. Measure resistance between Circuit 32 RD/LB at the starter lockout relay connector and the starter solenoid ignition start terminal.
4. Disconnect the starter lockout relay. KOEO. Turn and hold the Ignition switch in the START position. Measure resistance between Circuit 113 YL/LB and known good ground.
5. Key Off. Disconnect the starter lockout relay. Measure resistance between the Starter Lockout Relay terminals 30 and 87A.
6. Key OFF. Disconnect the ICM connector C4 and the starter lockout relay. Measure resistance between Circuit 113 YL/LB at the starter lockout relay connector and known good ground.

Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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