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STEP
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INSPECTION
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ACTION
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1
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• Do other indicator lights illuminate with the ignition switch at ON?
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Yes
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Inspect the meter fuse
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No
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Go to the next step
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2
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• Inspect the O/D OFF switch
• Is the O/D OFF switch normal?
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Yes
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Go to the next step
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No
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Repair or replace any malfunctioning parts
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3
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• Inspect the voltage at the following PCM terminal
• O/D OFF indicator light signal
• Is terminal voltage normal?
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Yes
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Service as required
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No
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Replace the PCM
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4
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• Inspect the O/D OFF indicator light
• Is the O/D OFF indicator light normal?
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Yes
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Inspect for an open circuit or disconnected connector in the wiring harness between the following
• Ignition switch and O/D OFF indicator light
• O/D OFF indicator light and PCM
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No
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Repair or replace any malfunctioning parts
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5
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• Verify the test results.
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- If normal, return to the diagnostic index to service any additional symptoms.
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- If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
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• If the vehicle is repaired, troubleshooting is completed.
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• If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.
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