Jeep Grand Cherokee WK. Manual — part 407

INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

DIAGNOSIS AND TESTING

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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B1200-AIRBAG WARNING INDICATOR CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on and when requested to turn on by the Occupant Restraint Controller (ORC).

•

Set Condition:
The Instrument Cluster software detects the voltage across the Airbag Lamp is below 0.5 volts when ON.

Possible Causes

INSTRUMENT CLUSTER

Diagnostic Test

1.

CHECK FOR ACTIVE DTC

NOTE: The Instrument Cluster performs internal tests on the Airbag Lamp during each ignition cycle.

With the scan tool, erase DTCs.

Turn the ignition off, wait 10 seconds, then turn the ignition on.

Wait for the Instrument Cluster to perform the bulb check.

With the scan tool, read DTCs.

Is the DTC active?

Yes

>> Replace and program the Instrument Cluster in accordance with the Service Information.

Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)

No

>> Test complete.

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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B1201-AIRBAG WARNING INDICATOR CIRCUIT OPEN

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on and when requested to turn on by the Occupant Restraint Controller (ORC).

•

Set Condition:
The Instrument Cluster software detects the voltage across the Airbag Lamp is above 4.0 volts when ON.

Possible Causes

INSTRUMENT CLUSTER

Diagnostic Test

1.

CHECK FOR AN ACTIVE DTC

NOTE: The Instrument Cluster performs internal tests on the Airbag Lamp during each ignition cycle.
With the scan tool, erase DTCs.

Turn the ignition off, wait 10 seconds, then turn the ignition on.

Wait for the Instrument Cluster to perform the bulb check.

With the scan tool, read DTCs.

Is the DTC active?

Yes

>> Replace and program the Instrument Cluster in accordance with the Service Information.

Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)

No

>> Test complete.

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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B123F-MENU SWITCH STUCK

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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