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Starter Relay Circuit Test: Wrangler

  1. Ensure battery is fully charged. Remove starter relay from Power Distribution Center (PDC). Refer to PDC cover for proper relay location. PDC is located in engine compartment.
  2. Turn ignition switch to ON position. On M/T equipped models, depress clutch pedal. Check for battery voltage at starter relay connector terminal B1 (Pink/Black wire). See Figure. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in wiring between starter relay connector and battery.
  3. Connect a jumper wire between starter relay connector terminals B1 (Pink/Black wire) and B2 (Brown wire). If engine does not crank, go to next step. See Figure. If engine cranks, check starter relay. See STARTER RELAY TEST  under BENCH TESTING.
  4. Check continuity of Brown wire between starter relay connector terminal B2 and starter solenoid. If continuity exists, go to next step. See Figure. If continuity does not exist, repair Brown wire as necessary and recheck system.
  5. Check for battery voltage at starter relay connector terminal B5 (Yellow/Red wire) with ignition switch in START position. See Figure. If battery voltage exists, go to step  7. If battery voltage does not exist go to next step on M/T models, or repair circuit between ignition switch and starter relay connector terminal B5 on A/T models. On all models, if battery voltage exists, check ignition switch. See IGNITION SWITCH TEST  under ON-VEHICLE TESTING.
  6. Disconnect Clutch Pedal Position (CPP) switch connector. Connect a jumper wire between CPP switch harness connector terminals. Recheck battery voltage at starter relay connector terminal B5 (Yellow/Red wire) with ignition switch in START position. If battery voltage exists, replace switch. If battery voltage does not exist, check Yellow/Red wire between ignition switch and starter relay connector terminal B5. Repair circuit as necessary. If circuit to ignition switch is okay, check ignition switch. See IGNITION SWITCH TEST .
  7. Check for continuity between starter relay connector terminal B3 (Brown/Light Blue wire) and ground. See Figure. If continuity exists, circuit is okay. If continuity does not exist on models with A/T, check circuit for an open or short, or check for faulty PNP switch. See PARK/NEUTRAL POSITION SWITCH . On vehicles equipped with M/T, repair open in Brown/Light Blue wire.
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