Pinpoint Test F: The Start-Stop Switch Illumination Is Inoperative Or Always On (Vehicles With Push Button Start)

F1 VERIFY THE START-STOP SWITCH ILLUMINATION OPERATION
- Ignition ON.
- Place the headlamp switch to the PARKING LAMPS ON position.
- Press the dimmer switch up and down to change the level of the instrument panel illumination.
Is the start/stop switch illumination inoperative or always on?
- Yes : If the start/stop switch illumination is inoperative, GO to F2
  If the start/stop switch illumination is always on, GO to F4
- No : The system is operating correctly at this time. The concern may have been caused by component connections. ADDRESS the root cause of any wiring, terminal or connector issues.

F2 CHECK FOR ILLUMINATION VOLTAGE AND GROUND AT THE START/STOP SWITCH

Ignition OFF.
Disconnect Start/Stop Switch C2195 .
Ignition ON.
Press the dimmer switch up until the instrument panel illumination reaches full brightness.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C2195-6		C2195-1

Is the voltage greater than 11 volts?

Yes : INSTALL a new start/stop switch.
REFER to: IGNITION SWITCH .
No : GO to F3

F3 CHECK FOR ILLUMINATION VOLTAGE AT THE START/STOP SWITCH

Measure:

Positive Lead	Measurement/Action	Negative Lead
C2195-6		Ground

Is the voltage greater than 11 volts?

Yes : REPAIR the illumination ground circuit.
No : REPAIR the illumination circuit.

F4 CHECK THE START/STOP SWITCH ILLUMINATION CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect Start/Stop Switch C2195 .
Disconnect BCM C2280E .

Measure:

Positive Lead	Measurement/Action	Negative Lead
C2195-6		Ground

Is any voltage present?

Yes : REPAIR the illumination circuit.
No : GO to F5

F5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect all BCM connectors.
- Repair:
  - corrosion (install new connector or terminals - clean module pins)
  - damaged or bent pins - install new terminals/pins
  - pushed-out pins - install new pins as necessary
- Reconnect all BCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
- Yes : CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
  REFER to: BODY CONTROL MODULE (BCM) .
- No : The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.