Refer to Wiring Diagrams Cell 71 for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Instrument Panel and Interior Switches Illumination - System Operation and Component Description (413-00 Instrument Panel and Interior Switches Illumination, Description and Operation).
Possible Sources
- Communication network concern
- Wiring, terminals or connectors
- Steering wheel
-
LH lower steering wheel switch
-
RH upper steering wheel switch
-
RH lower steering wheel switch
-
SIMA ( LH upper steering wheel switch)
|
WARNING:
Incorrect repair techniques or actions can cause an
accidental Supplemental Restraint System (SRS) deployment. Never
compromise or depart from these instructions. Failure to precisely
follow all instructions could result in serious personal injury from an
accidental deployment.
|
K1 INSPECT THE NETWORKED ILLUMINATION COMPONENTS |
-
Place the headlamp switch in the PARKING LAMPS ON position.
-
While pressing the illumination dim up and dim down switch, monitor the networked illumination components.
Are all of the networked illumination sources inoperative?
Yes |
GO to Pinpoint Test B
|
|
K2 PERFORM A NETWORK TEST |
-
Using a diagnostic scan tool, perform a network test.
Does the SIMA pass the network test?
No |
DIAGNOSE a concern with the network. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
|
|
K3 CHECK FOR SIMA (SWITCH INPUT MODULE A)
DIAGNOSTIC TROUBLE CODE (DTCS) |
-
Using a diagnostic scan tool, perform the SIMA self-test.
Are any SIMA Diagnostic Trouble Code (DTCs) present?
Yes |
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).
|
|
K4 VERIFY THE STEERING WHEEL SWITCH(ES) FUNCTIONALITY |
-
Check the suspect steering wheel switch(es) for correct operation.
Does the suspect switch(es) operate normally?
Yes |
If all steering wheel switch illumination is inoperative, GO to K17
If only the LH upper steering wheel switch is inoperative, GO to K17
If only the RH upper steering wheel switch is inoperative, GO to K5
If the RH upper, LH lower and RH lower steering wheel switches are inoperative, GO to K9
If both LH lower and RH lower steering wheel switches are inoperative, GO to K15
If only one lower steering wheel switch is inoperative, GO to K16
If the paddle switch(es) is inoperative, GO to Pinpoint Test L
|
No |
For a cruise control concern, without adaptive cruise control, REFER to: Cruise Control (419-03A Cruise Control, Diagnosis and Testing).
For a cruise control concern, with adaptive cruise control, REFER to: Cruise Control - Vehicles With: Adaptive Cruise Control With Lane Centering (419-03B Cruise Control, Diagnosis and Testing).
For an IPC concern, REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
For an audio system concern, REFER to: Information and Entertainment System (415-00 Information and Entertainment System - General Information, Diagnosis and Testing).
|
|
K5 CHECK THE RH (RIGHT-HAND)
UPPER STEERING WHEEL SWITCH DIALOG MODE ILLUMINATION |
-
Place the headlamp switch in the OFF position.
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
-
Remove the driver airbag. For vehicles with adaptive steering,
REFER to: Driver Knee Airbag (501-20B Supplemental Restraint System, Removal and Installation). For vehicles without adaptive steering, REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
-
Disconnect
LH Upper Steering Wheel Switch C2998
.
-
NOTE:
If the jumper wire fuse fails during this step,
refer to the Wiring Diagrams manual to identify the possible locations
of the short to ground.
Connect a fused jumper wire:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C2998-14
|
|
C2998-15
|
C2998-10
|
|
C2998-1
|
Does the RH upper steering wheel switch illuminate?
Yes |
REMOVE the fused jumper wires. GO to K6
|
|
K6 CHECK THE RH (RIGHT-HAND)
UPPER STEERING WHEEL SWITCH DOMAIN MODE ILLUMINATION |
-
NOTE:
If the jumper wire fuse fails during this step,
refer to the Wiring Diagrams manual to identify the possible locations
of the short to ground.
Connect a fused jumper wire:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C2998-14
|
|
C2998-15
|
C2998-11
|
|
C2998-1
|
Does the RH upper steering wheel switch illuminate?
Yes |
REMOVE the fused jumper wires. GO to K17
|
|
K7 CHECK THE RH (RIGHT-HAND)
UPPER STEERING WHEEL SWITCH DIALOG MODE ILLUMINATION CIRCUIT FOR VOLTAGE |
-
Disconnect
RH Upper Steering Wheel Switch C2999
.
-
Measure:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C2999-1
|
|
C2999-4
|
Is the voltage greater than 11 volts?
Yes |
INSTALL a new RH upper steering wheel switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K8 CHECK THE RH (RIGHT-HAND)
UPPER STEERING WHEEL SWITCH DOMAIN MODE ILLUMINATION CIRCUIT FOR VOLTAGE |
-
Disconnect
RH Upper Steering Wheel Switch C2999
.
-
Measure:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C2999-1
|
|
C2999-5
|
Is the voltage greater than 11 volts?
Yes |
INSTALL a new RH upper steering wheel switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K9 CHECK THE LH (LEFT-HAND)
LOWER STEERING WHEEL SWITCH ILLUMINATION CIRCUIT FOR VOLTAGE |
-
Place the headlamp switch in the OFF position.
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
-
Remove the driver airbag. For vehicles with adaptive steering,
REFER to: Driver Knee Airbag (501-20B Supplemental Restraint System, Removal and Installation). For vehicles without adaptive steering, REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
-
Disconnect
LH Lower Steering Wheel Switch C2366
.
-
Place the headlamp switch in the PARKING LAMPS ON position.
Is the voltage greater than 11 volts?
Yes |
INSTALL a new LH lower steering wheel switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
|
K10 VERIFY THE RH (RIGHT-HAND)
LOWER STEERING WHEEL SWITCH FOR AN INTERNAL SHORT |
-
Place the headlamp switch in the OFF position.
-
Disconnect
RH Lower Steering Wheel Switch C2367
.
-
Place the headlamp switch in the PARKING LAMPS ON position.
Is the voltage greater than 11 volts?
Yes |
INSTALL a new RH lower steering wheel switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
|
K11 VERIFY THE RH (RIGHT-HAND)
UPPER STEERING WHEEL SWITCH FOR AN INTERNAL SHORT |
-
Place the headlamp switch in the OFF position.
-
Disconnect
RH Lower Steering Wheel Switch C2999
.
-
Place the headlamp switch in the PARKING LAMPS ON position.
Is the voltage greater than 11 volts?
Yes |
INSTALL a new RH upper steering wheel switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
|
K12 CHECK THE ILLUMINATION VOLTAGE CIRCUIT FOR AN OPEN |
-
Place the headlamp switch in the OFF position.
-
Disconnect
LH Upper Steering Wheel Switch C2998
.
Is the resistance less then 3 ohms?
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K13 CHECK THE ILLUMINATION VOLTAGE CIRCUIT FOR A SHORT TO GROUND |
Is the resistance greater than 10,000 ohms?
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K14 CHECK THE SWITCH CIRCUITS FOR A SHORT TOGETHER |
Is the resistance greater than 10,000 ohms?
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K15 CHECK THE LOWER STEERING WHEEL SWITCH ILLUMINATION |
-
Place the headlamp switch in the OFF position.
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
-
Remove the driver airbag. For vehicles with adaptive steering,
REFER to: Driver Knee Airbag (501-20B Supplemental Restraint System, Removal and Installation). For vehicles without adaptive steering, REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
-
Disconnect
LH Upper Steering Wheel Switch C2998
.
-
Place the headlamp switch in the PARKING LAMPS ON position.
-
NOTE:
If the jumper wire fuse fails during this step,
refer to the Wiring Diagrams manual to identify the possible locations
of the short to ground.
Connect a fused jumper wire:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C2998-14
|
|
C2998-15
|
C2998-12
|
|
C2998-1
|
Do the lower steering wheel switches illuminate?
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K16 CHECK THE STEERING WHEEL SWITCH FOR VOLTAGE |
-
Place the headlamp switch in the OFF position.
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
-
Remove the driver airbag. For vehicles with adaptive steering,
REFER to: Driver Knee Airbag (501-20B Supplemental Restraint System, Removal and Installation). For vehicles without adaptive steering, REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
-
Disconnect Suspect Steering Wheel Switch.
-
Turn the cruise control ON.
Is the voltage greater than 11 volts?
Yes |
INSTALL a new steering wheel switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
No |
INSTALL a new steering wheel.
For vehicles with adaptive steering, REFER to: Steering Wheel - Vehicles With: Adaptive Steering (211-04 Steering Column, Removal and Installation).
For vehicles without adaptive steering, REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
|
|
K17 CHECK FOR CORRECT SIMA (SWITCH INPUT MODULE A)
OPERATION |
-
Disconnect and inspect all SIMA and related in-line 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 the SIMA
and related in-line connectors and all previously disconnected
illumination system connectors. Make sure all connectors seat and latch
correctly.
-
Operate the system to determine if the concern is still present.
Is the concern still present?
Yes |
CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA.
If a service article exists for this concern, DISCONTINUE this test and
FOLLOW the service article instructions. If no service articles address
this concern, INSTALL a new SIMA. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
|
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.
|
|