Interface Dial And Center Switch Panel Buttons Do Not Work (Without Auto Idle Stop System)

NOTE: 

• Check the vehicle 12 volt battery condition first - Refer to: 12 Volt Battery Test (Without SH-AWD) or 12 Volt Battery Test (With SH-AWD) .
• Check the connectors for poor connections or loose terminals.

1. Problem verification

   - 1. Turn the vehicle to the ON mode.

   - 2. Check if the center display operates by using the interface dial and the center switch panel hard buttons.

   Do the interface dial and the center switch panel hard buttons workΩ

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   The failure is duplicated, go to step 2.

2. Open wire check (GND line)

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Center switch panel/interface dial 7P connector

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Center switch panel/interface dial 7P connector: disconnected
   Test point 1	Center switch panel/interface dial 7P connector No. 6 - Refer to: Center Switch Panel/Interface Dial Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector For Inputs And Outputs (Without Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector for Inputs and Outputs (2018-19)
   Test point 2	Body ground

   Is there continuity?

   YES 

   The GND wire is OK. Go to step 3.

   NO 

   Repair an open in the wire between the center switch panel/interface dial and body ground (G302).

3. Open wire check (ACC line)

   - 1. Turn the vehicle to the ON mode.

   - 2. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Center switch panel/interface dial 7P connector: disconnected
   Test point 1	Center switch panel/interface dial 7P connector No. 1 - Refer to: Center Switch Panel/Interface Dial Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector For Inputs And Outputs (Without Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector for Inputs and Outputs (2018-19)
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The ACC wire is OK. Go to step 4.

   NO 

   Repair an open in the wire between the No. B37 (7.5 A) fuse in the under-dash fuse/relay box and the center switch panel/interface dial.

4. Shorted wire check (JOG line)

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Audio-navigation unit connector F (18P)

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Center switch panel/interface dial 7P connector: disconnected
   	Audio-navigation unit connector F (18P): disconnected
   Test point 1	Center switch panel/interface dial 7P connector No. 4 - Refer to: Center Switch Panel/Interface Dial Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector For Inputs And Outputs (Without Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector for Inputs and Outputs (2018-19)
   Test point 2	Body ground

   Is there continuity?

   YES 

   There is a short to body ground in the wire between the audio-navigation unit and the center switch panel/interface dial. Replace the affected shielded harness.

   NO 

   The JOG wire is not shorted to ground. Go to step 5.

5. Shorted wire check (JOG SH line to JOG line)

   - 1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Center switch panel/interface dial 7P connector: disconnected
   	Audio-navigation unit connector F (18P): disconnected
   Test point 1	Center switch panel/interface dial 7P connector No. 4 - Refer to: Center Switch Panel/Interface Dial Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector For Inputs And Outputs (Without Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector for Inputs and Outputs (2018-19)
   Test point 2	Center switch panel/interface dial 7P connector No. 5 - Refer to: Center Switch Panel/Interface Dial Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector For Inputs And Outputs (Without Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector for Inputs and Outputs (2018-19)

   Is there continuity?

   YES 

   There is a short in the wires between the audio-navigation unit and the center switch panel/interface dial. Replace the affected shielded harness.

   NO 

   The JOG SH and the JOG wires are not shorted. Go to step 6.

6. Open wire check (JOG line)

   - 1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Center switch panel/interface dial 7P connector: disconnected
   	Audio-navigation unit connector F (18P): disconnected
   Test point 1	Audio-navigation unit connector F (18P) No. 16 - Refer to: Audio-Navigation Unit Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Audio-Navigation Unit Connector for Inputs and Outputs (Without Auto Idle Stop System) (2015-17) or Audio-Navigation Unit Connector for Inputs and Outputs (Undefined) (2018), or Audio-Navigation Unit Connector for Inputs and Outputs (2019)
   Test point 2	Center switch panel/interface dial 7P connector No. 4 - Refer to: Center Switch Panel/Interface Dial Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector For Inputs And Outputs (Without Auto Idle Stop System) (2015-17) or Center Switch Panel/Interface Dial Connector for Inputs and Outputs (2018-19)

   Is there continuity?

   YES 

   The JOG wire is OK. Go to step 7.

   NO 

   There is an open in the wire between the audio-navigation unit and the center switch panel/interface dial. Replace the affected shielded harness.

7. Center switch panel/interface dial check (substitution)

   - 1. Substitute a known-good center switch panel/interface dial.

   - 2. Reconnect all the connectors, and recheck.

   Does the symptom go away?

   YES 

   Replace the original center switch panel/interface dial.

   NO 

   Replace the audio-navigation unit .