PINPOINT TEST E : The Steering Wheel Switch(es) Illumination Is Inoperative
- E1 CHECK OTHER NON-NETWORK DIMMABLE LIGHTING SOURCES
- Ignition OFF.
- Place the headlamp switch in the parking lamps on position.
- Using the instrument panel dimmer switch, change the dimmable backlighting to its brightest setting.
Are all non-networked dimmable backlighting sources inoperative?
Yes GO to Pinpoint Test A . No If all steering wheel switches do not illuminate, GO to E2. If an individual steering wheel switch does not illuminate, GO to E5. - E2 CHECK THE HORN OPERATION
- Push the driver airbag against the steering wheel to activate the horn.
Does the horn sound?
Yes GO to E3. No Refer to article 'Horn', Go to Pinpoint Test A . - E3 CHECK THE STEERING WHEEL BACKLIGHTING VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Disconnect: Lower Clockspring C218A.
- Measure:
Positive Lead Measurement / Action Negative Lead C218A-9 Ground
Is the voltage greater than 11 volts?
Yes GO to E4. No REPAIR the circuit. - E4 CHECK THE STEERING WHEEL AND HARNESS
- Connect: Lower Clockspring C218A.
- Remove the driver airbag. REFER to Supplemental Restraint System .
- Disconnect: Upper Clockspring C218B.
- Connect: Battery Ground Cable.
- Place the headlamp switch in the parking lamps on position.
- Using the instrument panel dimmer switch, change the dimmable backlighting to its brightest setting.
- Measure:
Positive Lead Measurement / Action Negative Lead (Component side) C218B-9 Ground
Is the voltage greater than 11 volts?
Yes REPAIR the steering wheel harness for an open or INSTALL a new steering wheel. REFER to Steering Column . No INSTALL a new clockspring. REFER to Supplemental Restraint System . - E5 CHECK FOR VOLTAGE AND GROUND TO THE STEERING WHEEL SWITCH
- Remove the driver airbag. REFER to Supplemental Restraint System .
- Disconnect: Suspect Steering Wheel Switch.
- Connect: Battery Ground Cable.
- Place the headlamp switch in the parking lamps on position.
- Measure:
Positive Lead Measurement / Action Negative Lead (Left Switch) C2998-10 (Left Switch) C2998-5 (Right Switch) C2999-6 (Right Switch) C2999-1
Is the voltage greater than 11 volts?
Yes INSTALL a new switch in question. REFER to Steering Column Switches . No REPAIR the steering wheel harness for an open or INSTALL a new steering wheel. REFER to Steering Column .
