Pinpoint Test F: The Steering Wheel Controls Are Inoperative/Do Not Operate Correctly
Information and Entertainment System
Pinpoint Test F: The Steering Wheel Controls Are Inoperative/Do Not Operate Correctly
Refer to Wiring Diagram Set 130, Audio System/Navigation for schematic and connector information Electrical Diagrams.
Normal Operation
There are 2 different RH steering wheel switch configurations which include a 5-way infotainment display button as follows:
- Without the SYNC(R) system
- VOL-, VOL+, SEEK-, SEEK+, MEDIA, MUTE
- With the SYNC(R) system
- VOL-, VOL+, SEEK-, SEEK+, VOICE, PHONE
Normal Operation
The Instrument Panel Cluster (IPC) receives the RH steering wheel switch status and data from the Steering Column Control Module (SCCM) over the High Speed Controller Area Network (HS-CAN). The IPC (Instrument Panel Cluster) gateways the RH steering wheel switch status and data over the Infotainment Controller Area Network (I-CAN) to the Accessory Protocol Interface Module (APIM), the Audio Control Module (ACM), the audio Digital Signal Processing (DSP) module (if equipped) and the Front Control/Display Interface Module (FCDIM) (if equipped). The infotainment display in the RH IPC (Instrument Panel Cluster) display screen (8-inch (203 mm) touchscreen with SYNC) or FCDIM (Front Control/Display Interface Module) (without 8-inch (203 mm) touchscreen with SYNC(R)) is controlled through the RH 5-way steering wheel switch.
The audio redundant controls are controlled by the 3 momentary toggle switches. The RH steering wheel switch is hardwired to the SCCM (Steering Column Control Module) through signal and return circuits. The RH steering wheel switch buttons operate a unique switch that uses a different resistance value. The SCCM (Steering Column Control Module) sends out a reference voltage to the RH steering wheel switch on the input circuit and monitors the voltage drop when a switch is pressed. The voltage drop varies depending upon the resistance of the specific switch pressed, indicating to the SCCM (Steering Column Control Module) which switch is pressed.
- B1380:09 (Steering Wheel Right Switch Pack: Component Failure)- a continuous and on-demand DTC that sets in the SCCM (Steering Column Control Module) when the SCCM (Steering Column Control Module) detects any of the RH steering wheel switches buttons stuck closed.
- B1380:11 (Steering Wheel Right Switch Pack: Circuit Short to Ground)- a continuous and on-demand DTC that sets in the SCCM (Steering Column Control Module) when the SCCM (Steering Column Control Module) detects a short to ground on the RH steering wheel switches input circuit.
- B1380:17 (Steering Wheel Right Switch Pack: Circuit Voltage Above Threshold)- a continuous and on-demand DTC that sets in the SCCM (Steering Column Control Module) when the SCCM (Steering Column Control Module) detects an open or short to voltage on the RH steering wheel switches input circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Clockspring
- Steering wheel switch
- SCCM (Steering Column Control Module)
- ACM (Audio Control Module)
- APIM (Accessory Protocol Interface Module)
PINPOINT TEST F : THE STEERING WHEEL CONTROLS ARE INOPERATIVE/DO NOT OPERATE CORRECTLY
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: For vehicles equipped with navigation or not equipped with SYNC(R), start this pinpoint test at Step F3.
F1 CHECK THE SYNC(R) SYSTEM OPERATION
NOTE: Carrying out a Master Reset returns all preference settings to the factory defaults, erases all the phone book and call histories, and deletes any devices paired with the SYNC(R) system. For vehicles with a 8-inch (203 mm) touchscreen, all navigation and address data is deleted.
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, test the audio output for the audio input jack, USB (Universal Serial Bus) port, and Bluetooth connection using the VOICE switch on the steering wheel controls to enter each mode.
Do all of the SYNC(R) inputs function correctly?
Yes
The SYNC(R) system is operating correctly at this time. CARRY OUT a SYNC(R) system Master Reset. REFER to the Owner's Literature.
REVIEW the SYNC(R) system operation with the customer. If the customer device still does not operate correctly, the fault is with the customer device.
No
GO to F2.
F2 RESET THE APIM (Accessory Protocol Interface Module) AND RECHECK SYNC(R) SYSTEM OPERATION
- Carry out an APIM (Accessory Protocol Interface Module) power reset by disconnecting the battery for 5 minutes, then reconnecting it.
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, test the audio output for the audio input jack, USB (Universal Serial Bus) port, and Bluetooth connection using the VOICE switch on the steering wheel controls to enter each mode.
Do all of the SYNC(R) inputs function correctly?
Yes
The SYNC(R) system is operating correctly at this time. CARRY OUT a SYNC(R) system Master Reset. REFER to the Owner's Literature.
REVIEW the SYNC(R) system operation with the customer. If the customer device still does not operate correctly, the fault is with the customer device.
No
GO to F3.
F3 RETRIEVE THE RECORDED DTCs FROM THE IPC (Instrument Panel Cluster) SELF-TEST
- Check for recorded IPC (Instrument Panel Cluster) DTCs from the continuous self-test.
Is DTC U0212:00 recorded?
Yes
REFER to Instrument Panel, Gauges and Warning Indicators.
No
GO to F4.
F4 MONITOR THE STEERING WHEEL SWITCH PIDs
- Enter the following diagnostic mode on the scan tool: SCCM (Steering Column Control Module) DataLogger.
- Monitor the steering wheel switch PIDs while pressing each steering wheel switch as follows:
Steering Wheel Switch PID OK R_CURS_OK UP CURSOR R_CURS_UP DOWN CURSOR R_CURS_DWN LEFT CURSOR R_CURS_LFT RIGHT CURSOR R_CURS_RGT VOL- SW_VOLDOWN VOL+ SW_VOLUP SEEK- SW_SEEKMINUS SEEK+ SW_SEEKPLUS MEDIA SW_MEDIA MUTE SW_MUTE PHONE (SYNC(R)) SW_PHONE VOICE (SYNC(R)) SW_VOICE
Does each individual PID value agree with each switch position?
Yes
GO to F8.
No
If only one PID value is incorrect or the PID value always reads one particular switch position, INSTALL a new RH steering wheel switch. CLEAR any DTCs present. TEST the system for normal operation.
Otherwise, GO to F5.
F5 CHECK FOR VOLTAGE TO THE RH STEERING WHEEL SWITCHES
- Ignition OFF.
- Remove the driver air bag module.
- Disconnect: RH Steering Wheel Switch C2999.
- Ignition ON.
- Measure the voltage between the RH steering wheel switch, harness side as follows:
Positive Meter Lead Negative Meter Lead C2999-2 C2999-5 C2999-3 C2999-5 C2999-10 C2999-5 C2999-8 C2999-5
Is the voltage approximately 5 volts?
Yes
INSTALL a new RH steering wheel switch. CLEAR the DTCs. REPEAT the self-test.
No
GO to F6.
F6 CHECK FOR VOLTAGE TO THE CLOCKSPRING
- Ignition OFF.
- Disconnect: Clockspring C218B.
- Ignition ON.
- Measure the voltage between the clockspring component side as follows:
Clockspring Component Side Clockspring Component Side C218B-6 C218B-16 C218B-7 C218B-16 C218B-14 C218B-16 C218B-15 C218B-16
Is the voltage approximately 5 volts?
Yes
INSTALL a new steering wheel. CLEAR any DTCs present. TEST the system for normal operation.
No
GO to F7.
F7 CHECK FOR VOLTAGE AT THE SCCM (Steering Column Control Module)
- Ignition OFF.
- Remove the clockspring.
- Ignition ON.
- Measure the voltage between the SCCM (Steering Column Control Module), component side as follows:
Clockspring Component Side Clockspring Component Side C2414D-5 C2414D-10 C2414D-6 C2414D-10 C2414D-7 C2414D-10 C2414D-8 C2414D-10
Is the voltage approximately 5 volts?
Yes
INSTALL a new clockspring. CLEAR any DTCs present. TEST the system for normal operation.
No
GO to F8.
F8 CHECK FOR CORRECT SCCM (Steering Column Control Module) OPERATION
- Ignition OFF.
- Disconnect all the SCCM (Steering Column Control Module) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SCCM (Steering Column Control Module) connectors and make sure they are seated correctly.
- Connect: All Disconnected Connectors.
- Install the driver air bag module.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new SCCM (Steering Column Control Module). INSTALL the driver air bag module. CLEAR the DTCs. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.