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Diagnostic Aids

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If the wiring harness to the steering gear motor is damaged in any way, it MUST be replaced. You can only service the connectors and terminals.

Use a scan tool to monitor the outputs of the hall-affect sensor 12 volt reference circuit. If the voltage of this circuit does not measure between 11.75-12.00 volts, inspect the harness connector of the rear wheel steering control module. Inspect the harness connector for intermittent or poor connections. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS in Wiring Systems.

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