Diagnostic Procedure
1.

Check visually cooling fan whether it is operated always or not when A/conditioner switch is turned off.

2.

Is cooling fan operated always when A/conditioner switch is turned off?

caution

This current data is nothing but an example at certain condition. Thus, the real current data could be different from this example.

▶ Go to "ECM inspection" procedure as below.

▶ Go to "Coolant inspection" procedure.

▶ Go to "Spark plug inspection" procedure.

▶ Go to "Alternator inspection" procedure.

ECM Inspection
3.

Connect probe of the LED circuit tester to "high speed control" terminal or "low speed control" terminal of the ECM harness connector.

☞ Connect tongs of the LED circuit tester to battery (+) terminal.

4.

Perform fan-high (fan-low) actuation test using a GDS.

5.

Check for LED lamp on the circuit tester while actuation testing.

■ Specification : LED lamp is lit while actuation testing.

6.

Is LED lamp circuit tester lit normally?

▶ Go to "Coolant inspection" procedure.

▶ Go to "Spark plug inspection" procedure.

▶ Go to "Alternator inspection" procedure.

▶ Repair control circuit between cooling fan harness connector and ECM harness connector as necessary.

▶ Check for ECM.

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