Audio-Navigation System DTC 2618

DTC 2618  : LaneWatch Diag

NOTE: 

• Check the vehicle 12 volt battery condition first .
• 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 .
• Check any official Honda service website for more service information about the navigation system.
• 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 (male terminals) No. 3:
   Test point 2	LaneWatch camera 6P connector (male terminals) 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 CAM+B line, LWC CAM GND 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 (male terminals) No. 4:
   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 CAM+B 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
   Test point 2	Body ground

   Is there about 6 - 9 V?

   YES 

   There is an open in the wire. Replace the affected shielded harness.

   NO 

   The LWC CAM+B wire is not open. Go to step 5.

5. Shorted wire check (LWC CAM+B 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

   Test point 2

   Body ground

   Is there continuity?

   YES 

   There is a short to body ground in the wire. Replace the affected shielded harness.

   NO 

   Replace the audio-navigation unit .

6. Open wire check (LWC CAM GND 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
   Test point 2	LaneWatch camera 6P connector (male terminals) No. 3:

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

   Is there continuity?

   YES 

   Replace the audio-navigation unit .

   NO 

   There is an open in the wire. 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
   Test point 2	Body ground

   Test circuit 2

   Test point 1	Audio-navigation unit connector C (24P) No. 23
   Test point 2	Body ground

   Is there continuity?

   YES 

   There is a short to body ground in the wire(s). 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
   Test point 2	Audio-navigation unit connector C (24P) No. 23

   Is there continuity?

   YES 

   There is a short in the wires. 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
   Test point 2	LaneWatch camera 6P connector (male terminals) No. 2:

   Test circuit 2
   Test point 1	Audio-navigation unit connector C (24P) No. 23
   Test point 2	LaneWatch camera 6P connector (male terminals) 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). Replace the affected shielded harness.