NO.1 ACTIVE BONNET WARNING LIGHT DOES NOT ILLUMINATE WHEN IGNITION SWITCH IS TURNED TO ON POSITION [ACTIVE BONNET]

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1 | Active bonnet warning light does not illuminate when ignition switch is turned to on position
POSSIBLE CAUSE | • Active bonnet warning light (LED) malfunction • Instrument cluster malfunction • Communication error between active bonnet control module and instrument cluster • Active bonnet control module malfunction

Diagnostic Procedure

Step | Inspection | Action
--- | --- | ---
1 | VERIFY OTHER WARNING LIGHTS IN INSTRUMENT CLUSTER • Switch the ignition ON. • Are other warning lights in the instrument cluster illuminated? | Yes | Go to the next step.
No | Inspect the instrument cluster circuit power supply and body ground. Go to Step 3.
2 | PERFORM DTC INSPECTION FOR ACTIVE BONNET CONTROL MODULE • Perform the active bonnet control module DTC inspection using the M-MDS. (See DTC INSPECTION [ACTIVE BONNET].) • Are DTCs displayed? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [ACTIVE BONNET].)
No | Go to the next step.
3 | VERIFY WARNING LIGHT ILLUMINATION • Verify the warning light illumination using the instrument cluster input/output check mode. (See INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE.) ― Check code 26 • Are other warning lights in the instrument cluster illuminated? | Yes | Go to the next step.
No | Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) Go to Step 5.
4 | VERIFY INSTRUMENT CLUSTER DTCs • Using the M-MDS, verify DTCs for the instrument cluster. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Is the DTC displayed? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER].)
No | Go to the next step.
5 | VERIFY THAT MALFUNCTION DOES NOT RECUR AFTER REPAIRS • Switch the ignition to LOCK. • Switch the ignition ON. • Is the active bonnet warning light illuminated, and after approx. 6 s, turned off? | Yes | Verify that there are no DTCs in the memory. If there are no DTCs, the troubleshooting is completed.
No | Re-verify the malfunction symptom, then go back to Step 1.