Ford — Pinpoint Test A - Starter Lockout Relay Check
Testing & diagnosis
From a Ford service manual — check it applies to your exact model before use.
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Procedure
- Visually inspect for obvious signs of mechanical and electrical damage.
- Visually inspect for and note auxiliary system connections not shown on the recommended wiring schematic.
- Check Fuse 1 for an open 10A fuse.
- Disconnect the starter lockout relay. KOEO. Using an ohmmeter, measure for battery voltage on Circuit 16 RD/LG at the starter lockout relay connector.
- Disconnect the ICM connector C1. Check Circuit 113 Y/LB for a short.
- Refer to the pin numbers molded on the Starter Lockout Relay. Measure resistances between pin 85 and all others. One measurement should be between 40 and 120 ohms, with the other measurements being gr
Tools required
- Ohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fuse 1 10A
- Battery Voltage
- 40-120 ohms across pin 85 and one other pin
- greater than 10,000 ohms on remaining pin measurements
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.