DTC B1418

DTC B1418  : GREEN/RED LED Disconnect

DTCs (Telematics System)

NOTE:  Check the connectors for poor connections or loose terminals.

1. Problem verification

   -1. Clear the DTCs with the HDS.

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

   -3. Open the driver's door, and wait more than 1 minute.

   -4. Turn the vehicle to the ON mode.

   -5. Wait for at least 1 minute.

   -6. Check for DTCs with the HDS.

   DTC Description	DTC
   B1418 GREEN/RED LED Disconnect

   Is DTC B1418 indicated?

   YES 

   The failure is duplicated, go to step 2.

   NO 

   Intermittent failure, the system is OK at this time.

2. Open wire check (E-CALL LED RED line, E-CALL LED GREEN line)

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

   -2. Open the driver's door, and wait more than 1 minute.

   -3. Disconnect the following connectors.

   Telematics control unit connector A (32P)

   Telematics switch module 7P connector

   -4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Telematics control unit connector A (32P): disconnected
   	Telematics switch module 7P connector: disconnected
   Test point 1	Telematics control unit connector A (32P) No. 20
   Test point 2	Telematics switch module 7P connector (female terminals) No. 5:

   Test point 1	Telematics control unit connector A (32P) No. 21
   Test point 2	Telematics switch module 7P connector (female terminals) No. 4:

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

   Is there continuity?

   YES 

   The E-CALL LED RED and the E-CALL LED GREEN wires are not open. Go to step 3.

   NO 

   Repair an open in the wire.

3. Open wire check (GND line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Telematics control unit connector A (32P): disconnected
   	Telematics switch module 7P connector: disconnected
   Test point 1	Telematics switch module 7P connector (female terminals) No. 3:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   The GND wire is OK. Go to step 4.

   NO 

   Repair an open in the wire or poor ground (G501).

4. Telematics switch module check

   -1. Substitute a known-good telematics switch module.

   -2. Reconnect all the connectors.

   -3. Clear the DTCs with the HDS.

   -4. Turn the vehicle to the OFF (LOCK) mode.

   -5. Open the driver's door, and wait more than 1 minute.

   -6. Turn the vehicle to the ON mode.

   -7. Wait for at least 1 minute.

   -8. Check for DTCs with the HDS.

   DTC Description	DTC
   B1418 GREEN/RED LED Disconnect

   Is DTC B1418 indicated?

   YES 

   Replace the telematics control unit .

   NO 

   Replace the original telematics switch module.