DTC 2618 (Audio Unit)

DTC 2618  : LaneWatch Diag

NOTE: 

• Check the vehicle 12 volt battery condition first .
• This audio 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 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.

   -3. Wait for at least 6 seconds.

   -4. 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 (LWC CAM VCC line, 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 (female terminals) No. 1:
   Test point 2	Body ground

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

   Is there about 8.0 V?

   YES 

   The LWC CAM VCC wire is OK. Go to step 5.

   NO 

   Go to step 3.

3. Open wire check (LWC CAM 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 unit connector B (24P) No. 8
   Test point 2	Body ground

   Is there about 8.0 V?

   YES 

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

   NO 

   The LWC CAM VCC wire is not open. Go to step 4.

4. Shorted wire check (LWC CAM VCC line)

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

   -2. Disconnect the following connector.

   Audio unit connector B (24P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   	Audio unit connector B (24P): disconnected
   Test point 1	Audio unit connector B (24P) No. 8
   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 unit .

5. Determine possible failure area (SH LWC CAM line, others)

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

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   Test point 1	LaneWatch camera 6P connector (female terminals) No. 2:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   The SH LWC CAM wire is OK. Go to step  7.

   NO 

   Go to step 6.

6. Open wire check (SH LWC CAM line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   Test point 1	Audio unit connector B (24P) No. 9
   Test point 2	Body ground

   Is there continuity?

   YES 

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

   NO 

   Replace the audio unit .

7. Shorted wire check (LWC UART line)

   -1. Disconnect the following connector.

   Audio unit connector B (24P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected
   	Audio unit connector B (24P): disconnected
   Test point 1	Audio unit connector B (24P) No. 22
   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 LWC UART wire is not shorted to ground. Go to step 8.

8. Open wire check (LWC UART line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	LaneWatch camera 6P connector: disconnected

   	Audio unit connector B (24P): disconnected
   Test point 1	Audio unit connector B (24P) No. 22
   Test point 2	LaneWatch camera 6P connector (female terminals) No. 6:

   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.