DTC 2618: LaneWatch Diag (With Display Audio) (2017)

NOTE: 

• First, check the Vehicle 12 volt battery condition .
• This navigation DTC sets when Connection NG is indicated in the LaneWatch diagnosis (the LaneWatch icon is red in the System Links).
• Before you troubleshoot, make sure to follow the General Troubleshooting Information - Refer to: How to Troubleshoot the Navigation System (With Display Audio) (2017) .
• Check the connectors for poor connections or loose terminals.

1. Problem verification

   -1. Clear the hard error codes.

   - 2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

   - 3. Check for hard error codes.

   Is DTC 2618 indicated?

   YES 

   The failure is duplicated, go to step 2.

   NO 

   Intermittent failure, the system is OK at this time.

2. Determine possible failure area (LaneWatch camera power and ground, others)

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

   - 2. Disconnect the following connector.

   LaneWatch camera 6P connector

   - 3. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	LaneWatch camera 6P connector: disconnected
   Test point 1	LaneWatch camera 6P connector No. 3
   Test point 2	LaneWatch camera 6P connector No. 4

   Courtesy of HONDA, U.S.A., INC.

   Is there about 6 - 9 V?

   YES 

   Go to step 7.

   NO 

   Go to step 3.

3. Determine possible failure area (LWC VCC line, SH LWC line)

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

   Test condition	Vehicle ON mode
   	LaneWatch camera 6P connector: disconnected
   Test point 1	LaneWatch camera 6P connector No. 6
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there about 6 - 9 V?

   YES 

   Go to step 6.

   NO 

   Go to step 4.

4. Open wire check (LWC VCC line)

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

   Test condition	Vehicle ON mode
   	LaneWatch camera 6P connector: disconnected
   Test point 1	Audio-navigation unit connector C (24P) No. 21 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	Body ground

   Is there about 6 - 9 V?

   YES 

   There is an open in the wire between the audio-navigation unit and the LaneWatch camera. Replace the affected shielded harness.

   NO 

   The LWC VCC wire is not open. Go to step 5.

5. Shorted wire check (LWC VCC line)

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

   - 2. Disconnect the following connector.

   Audio-navigation unit connector C (24P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   	Audio-navigation unit connector C (24P): disconnected
   Test point 1	Audio-navigation unit connector C (24P) No. 21 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   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 LaneWatch camera. Replace the affected shielded harness.

   NO 

   Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .

6. Open wire check (SH LWC line)

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

   - 2. Disconnect the following connector.

   Audio-navigation unit connector C (24P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector C (24P): disconnected
   	LaneWatch camera 6P connector: disconnected
   Test point 1	Audio-navigation unit connector C (24P) No. 9 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	LaneWatch camera 6P connector No. 1

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .

   NO 

   There is an open in the wire between the audio-navigation unit and the LaneWatch camera. Replace the affected shielded harness.

7. Shorted wire check (UNIT TO LWC, LWC TO UNIT lines)

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

   - 2. Disconnect the following connector.

   Audio-navigation unit connector C (24P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   	Audio-navigation unit connector C (24P): disconnected
   Test circuit 1
   Test point 1	Audio-navigation unit connector C (24P) No. 22 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	Body ground

   Test circuit 2
   Test point 1	Audio-navigation unit connector C (24P) No. 23 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	Body ground

   Is there continuity?

   YES 

   There is a short to body ground in the wire (s) between the audio-navigation unit and the LaneWatch camera. Replace the affected shielded harness.

   NO 

   The UNIT TO LWC wire and the LWC TO UNIT wire are not shorted. Go to step 8.

8. Shorted wire check (UNIT TO LWC line to LWC TO UNIT line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   	Audio-navigation unit connector C (24P): disconnected
   Test point 1	Audio-navigation unit connector C (24P) No. 22 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	Audio-navigation unit connector C (24P) No. 23 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)

   Is there continuity?

   YES 

   There is a short in the wires between the audio-navigation unit and the LaneWatch camera. Replace the affected shielded harness.

   NO 

   The UNIT TO LWC to the LWC TO UNIT wire are not shorted. Go to step 9.

9. Open wire check (UNIT TO LWC, LWC TO UNIT lines)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   	Audio-navigation unit connector C (24P): disconnected
   Test circuit 1
   Test point 1	Audio-navigation unit connector C (24P) No. 22 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	LaneWatch camera 6P connector No. 2

   Test circuit 2
   Test point 1	Audio-navigation unit connector C (24P) No. 23 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
   Test point 2	LaneWatch camera 6P connector No. 5

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Replace the LaneWatch camera .

   NO 

   There is an open in the wire (s) between the audio-navigation unit and the LaneWatch camera. Replace the affected shielded harness.