DTC Description

If the voltage of the cluster ionizer's diagnosis line is lower than 1.5V, the air-control module sets DTC B1688.

DTC Detectiong Condition

Item

Detecting Condition

Possible cause

DTC Strategy

•

Check Cluster Ionizer

1.

Poor connection in wireharness.

2.

Open in power or signal or ground circuit.

3.

Short to ground in power or signal or ground circuit.

4.

Faulty Cluster Ionizer.

Enable Conditions

•

IG KEY ON

Threshold value

•

After IGN KEY ON, when the voltage keeps lower than 1.5V for more than 2 seconds

Failsafe

•

The cluster ionizer does not run any more.

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