Circuit between module and part

1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
2. Disconnect the connector on the module side and the connector on the part side of the circuit to be inspected.

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   NOTE:

   • For the connector disconnection procedure, refer to the removal/installation procedure for each part.
3. Inspect for continuity between the applicable terminals of the module-side connector and the part-side connector.

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   NOTE:

   • If the inspection is difficult due to the distance between the module-side and part-side connectors being too far, the inspection can be performed using only one of the connectors by shorting one of the connector terminals using a jumper wire.

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   If there is continuity: 

   • There is no open circuit in the circuit, therefore the inspection is completed.

   If there is no continuity: 

   • To specify the malfunctioning location, go to the next step.
4. Refer to the appropriate wiring diagram and verify if there is a common connector between the applicable circuits.

If there is a common connector: 

• Disconnect the common connector and inspect the connector and terminal. (See CONNECTOR INSPECTION .)

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• Inspect each common connector for continuity to determine the malfunctioning location.

• Repair or replace the vehicle wiring harness which has an open circuit.

If there is no common connector: 

• Repair or replace the vehicle wiring harness.