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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

Normal Operation

There are 2 separate groups of switches: the first group has 5 switches for the redundant audio controls and the second group has 2 switches for SYNC(R) control. The Steering Column Control Module (SCCM) sends out a reference voltage to the switches and monitors the voltage drop when an audio or SYNC(R) control switch is pressed. The voltage drop varies depending upon the resistance of each switch, providing a specific indication to the SCCM (Steering Column Control Module) of which switch is pressed.

The SCCM (Steering Column Control Module) sends a network message to the Accessory Protocol Interface Module (APIM) for the or SYNC(R) switches and to the ACM (Audio Front Control Module) for the redundant audio controls.

- DTC B1380:09 (Steering Wheel Right Switch Pack: Component Failure)- sets when the SCCM (Steering Column Control Module) detects one or more buttons are stuck. This DTC can be either continuous or on-demand.

- DTC B1380:11 (Steering Wheel Right Switch Pack: Circuit Short To Ground)- sets when the SCCM (Steering Column Control Module) detects a short to ground on the signal circuit. This DTC can be either continuous or on-demand.

- DTC B1380:17 (Steering Wheel Right Switch Pack: Circuit Voltage Above Threshold)- sets when the SCCM (Steering Column Control Module) detects a short to voltage on the signal circuit. This DTC can be either continuous or on-demand.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Clockspring

- Steering wheel controls

- SCCM (Steering Column Control 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.

- 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.

For a concern with the VOL-, SEEK-, SEEK+ or MEDIA switch, GO to F3.

For all other concerns, 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 DETERMINE THE INOPERATIVE STEERING WHEEL CONTROLS

- Determine which steering wheel controls are inoperative by pressing each steering wheel control switch individually while operating the audio system in various modes (AM/FM, SYNC(R) (if equipped), etc.).

Is the concern with the VOL-, VOL+, SEEK-, SEEK+ or MEDIA switch?

Yes
GO to F4.
No
GO to F5.

F4 CHECK THE REDUNDANT AUDIO CONTROL SWITCHES

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: SCCM (Steering Column Control Module) DataLogger.

- Press each audio control switch while monitoring the redundant audio control switch PIDs (SCCS).

Redundant Audio Controls SCCS PID Value SW_MEDIA RELEASED/PRESSED SW_SEEKMINUS RELEASED/PRESSED SW_SEEKPLUS RELEASED/PRESSED SW_VOLDOWN RELEASED/PRESSED SW_VOLUP RELEASED/PRESSED



Does the PID value agree with the switch position?

Yes
GO to F9.
No
If only one switch does not display the correct PID value, INSTALL a new RH steering wheel switch. TEST the system for normal operation.

Otherwise, GO to F6.

F5 CHECK THE SYNC(R) CONTROL SWITCHES

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: SCCM (Steering Column Control Module) DataLogger.

- Press each SYNC(R) control switch while monitoring the switch PID in the SCCM (Steering Column Control Module).

SYNC(R) Switches SCCM (Steering Column Control Module) PID Value SW_PHONE RELEASED/PRESSED SW_VOICE RELEASED/PRESSED



Does the PID value agree with the switch position?

Yes
GO to F9.
No
If only one switch does not display the correct PID value, INSTALL a new RH steering wheel switch. TEST the system for normal operation.

Otherwise, GO to F6.

F6 CHECK FOR REFERENCE VOLTAGE TO THE SWITCHES

- Ignition OFF.

- Disconnect: RH Wheel Switch C2999.

- Ignition ON.

- For a concern with the VOL-, VOL+, SEEK-, SEEK+ or MEDIA switches, measure the voltage between the steering wheel switch, right C2999-2, circuit VME14 (BU/BK), harness side and the steering wheel switch, right C2999-4, circuit RME14 (RD/BK), harness side.






- For a concern with the VOICE or PHONE switches, measure the voltage between the steering wheel switch, right C2999-6, circuit VME54 (RD), harness side and the steering wheel switch, right C2999-7, circuit RME54 (YE), harness side.

Is approximately 5 volts present?

Yes
INSTALL a new RH steering wheel switch. CLEAR any DTCs present. TEST the system for normal operation.
No
GO to F7.

F7 CHECK FOR VOLTAGE TO THE CLOCKSPRING

- Ignition OFF.

- Remove the driver air bag module.

- Disconnect: Clockspring C218B.

- Ignition ON.

- For a concern with the VOL-, VOL+, SEEK-, SEEK+ or MEDIA switches, measure the voltage between the clockspring connector C218B pin 14, component side and the clockspring C218B pin 6, component side.






- For a concern with the VOICE or PHONE switches, measure the voltage between the clockspring connector C218B pin 16, component side and the clockspring C218B pin 8, component side.






Is approximately 5 volts present?

Yes
INSTALL a new steering wheel. TEST the system for normal operation. CLEAR any DTCs present. TEST the system for normal operation.
No
GO to F8.

F8 CHECK FOR VOLTAGE AT THE SCCM (Steering Column Control Module)

- Ignition OFF.

- Remove the clockspring.

- Ignition ON.

- For a concern with the VOL-, VOL+, SEEK-, SEEK+ or MEDIA switches, measure the voltage between the SCCM (Steering Column Control Module) C2414D pin 6, component side and the SCCM (Steering Column Control Module) C2414D pin 5, component side.






- For a concern with the VOICE or PHONE switches, measure the voltage between the SCCM (Steering Column Control Module) C2414D pin 10, component side and the SCCM (Steering Column Control Module) C2414D pin 9, component side.






Is approximately 5 volts present?

Yes
INSTALL a new clockspring. CLEAR any DTCs present. TEST the system for normal operation.
No
GO to F9.

F9 CHECK FOR CORRECT SCCM (Steering Column Control Module) OPERATION

- 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 seat 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. 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 any DTCs present. REPEAT the self-test.

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