Terminal and Connector Inspection
1.

Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

2.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,or damage.

3.

Has a problem been found?

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

▶ Go to "W/Harness Inspection" procedure.

Diagnosis Circuit Inspection
■ Check power in harness
1.

Ignition "ON"

2.

Measure voltage between Diagnosis terminal of Cluster Ionizer harness connector and chassis ground.

Specification

1) At over 2V: Cluster Ionizer is O.K.

2) At below 2V: Cluster Ionizer is abnormal.

3.

Is the measured voltage below 1.5V?

▶ Go to Next Inspection procedure.

▶ Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,or damage.

▶ Go to Next Inspection procedure.

■ Check for open in harness
4.

Ignition "OFF"

5.

Disconnect Cluster Ionizer and A/C control Module main harness connector.

6.

Measure resistance between ground terminal of Cluster Ionizer harness connector and ground terminal of A/C control Module harness connector.

Specification : below 1Ω

7.

Is the measured resistance within specification?

▶ Go to Next Inspection procedure.

▶ Check for open in harness.

▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

Power Circuit Inspection
■ Check for open in harness
1.

Ignition "OFF"

2.

Disconnect Cluster Ionizer and Connect A/C control Module main harness connector.

3.

Ignition "ON"

4.

Measure voltage between Power terminal of Cluster Ionizer harness connector and chassis ground.

Specification : BATT.

5.

Is the measured voltage within specification?

▶ Go to Next Inspection procedure.

▶ Check for open or short to ground in harness.

▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

Signal Circuit Inspection
■ Check for open in harness
1.

Ignition "OFF"

2.

Disconnect Cluster Ionizer and A/C control Module main harness connector.

3.

Measure resistance between signal terminal of Cluster Ionizer harness connector and signal terminal of A/C control Module harness connector.

Specification : below 1Ω

4.

Is the measured resistance within specification?

▶ Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,or damage.

▶ Check for open in harness.

▶ Substitute with a known-good Cluster Ionizer and check for proper operation. If the problem is corrected, replace Cluster Ionizer and then go to "Verification of Vehicle Repair" procedure.

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