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Starter Relay Circuit Test: Cherokee

  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. Depress clutch pedal on M/T equipped models.
  2. On all models, turn ignition switch to ON position. Check for battery voltage at starter relay connector terminal C6 (Yellow wire). See Figure. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in wiring from starter relay connector to battery.
  3. Connect a jumper wire between starter relay connector terminals C6 (Yellow wire) and C9 (Brown wire). See Figure. If engine does not crank, go to next step. If engine cranks, check starter relay. See STARTER RELAY TEST  under BENCH TESTING.
  4. Check continuity of Brown wire between starter relay connector terminal C9 and starter solenoid. If continuity exists, circuit is okay. Go to next step. See Figure. If continuity does not exists, repair open in Brown wire as necessary and recheck system.
    NOTE: On M/T equipped vehicles, depress clutch during following step.
  5. Check for battery voltage at starter relay connector terminal C8 (Yellow/Red wire on 4.0L A/T, Yellow wire on all others) with ignition switch in START position. See Figure. If battery voltage exists, go to step  7. If battery voltage does not exist on M/T, go to next step. If battery voltage does not exist on A/T, repair circuit between ignition switch and starter relay connector terminal C8. If battery voltage exists, check ignition switch. See IGNITION SWITCH TEST .
  6. Disconnect Clutch Pedal Position (CPP) switch connector. Connect a jumper wire between CPP switch harness connector terminals. Recheck voltage at starter relay connector terminal C8 with ignition switch in START position. See Figure. If battery voltage exists, replace CPP switch. If battery voltage does not exist, repair Yellow wire between ignition switch and starter relay connector terminal C8. If circuit to ignition switch is okay, check ignition switch. See IGNITION SWITCH TEST .
  7. Check for continuity to ground at starter relay connector terminal C6 (Black/White wire). If continuity exists, circuit is okay. If continuity does not exist and vehicle is equipped with a M/T, repair open in Black/White wire, and if vehicle is equipped with an A/T, check for an open circuit or for faulty Park/Neutral Position (PNP) switch. See PARK/NEUTRAL POSITION SWITCH . Repair as necessary.
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