DTC U017F-00 (2014 2015 SRS Unit)

DTC U017F-00  : Lost Communication With the Driver's E-Pretensioner Unit

NOTE: Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components of the correct part number, and that they were properly installed .
• Before doing this troubleshooting procedure, review SRS Precautions and Procedures , General Troubleshooting Information , and Battery Terminal Disconnection and Reconnection - Refer to: Battery Terminal Disconnection and Reconnection (2014 2015) .
• Before replacing the E-pretensioner unit, check the E-pretensioner unit software version with the HDS. If the software version is not the latest, update the E-pretensioner unit software , and retest.

DTC (SRS)

1. Problem verification

   -1. Clear the DTCs with the HDS.

   - 2. Turn the vehicle to the ON mode, then wait for 10 seconds.

   - 3. Check for DTCs with the HDS.

   DTC Description	DTC
   U017F-00 Lost communication with the driver's E-pretensioner unit

   Is DTC U017F-00 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures . If another DTC is indicated, troubleshoot the DTC.

2. Fuse check

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

   - 2. Check the following fuse.

   Fuse	No. E26 (30 A)
   Location	Passenger's under-hood fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the fuse, then turn vehicle to the ON mode. If the fuse blows again, check for a short to ground in the passenger's under-hood fuse/relay box No. E26 (30 A) fuse circuit.

3. Open wire check (+B EPT L line)

   -1. Disconnect the following connector.

   Driver's E-pretensioner unit 16P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Driver's E-pretensioner unit 16P connector: disconnected
   Test circuit	+B EPT L
   Test point 1	Driver's E-pretensioner unit 16P connector No. 1 (GRN)
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The 'B EPT L wire is OK. Go to step 4.

   NO 

   Open in the floor wire harness; replace the floor wire harness, then clear the DTC.

4. Open wire check (PGND line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Driver's E-pretensioner unit 16P connector: disconnected
   Test circuit	PGND

   Test point 1	Driver's E-pretensioner unit 16P connector No. 4 (BLK)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   The PGND wire is OK. Go to step 5.

   NO 

   Open in the floor wire harness; check for a poor ground at G602. If the ground is OK, replace the floor wire harness, then clear the DTC.

5. Open wire check (F-CAN_H, F-CAN_L lines)

   -1. Disconnect the following connector.

   Front passenger's E-pretensioner unit 14P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Driver's E-pretensioner unit 16P connector: disconnected
   	Front passenger's E-pretensioner unit 14P connector: disconnected
   Test circuit	F-CAN_H
   Test point 1	Driver's E-pretensioner unit 16P connector No. 12 (WHT)
   Test point 2	Front passenger's E-pretensioner unit 14P connector No. 10 (WHT)

   Test circuit	F-CAN_L
   Test point 1	Driver's E-pretensioner unit 16P connector No. 13 (BRN)
   Test point 2	Front passenger's E-pretensioner unit 14P connector No. 11 (BRN)

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

   Is there continuity?

   YES 

   The F-CAN_H and F-CAN_L wires are OK. Substitute a known-good E-pretensioner unit , then recheck. If the symptom/indication goes away with a known-good E-pretensioner unit, replace the original E-pretensioner unit .

   NO 

   Open in the harness between driver's E-pretensioner unit 16P connector terminal No. 12 and front passenger's E-pretensioner unit 14P connector terminal No. 10, or between driver's E-pretensioner unit 16P connector terminal No. 13 and front passenger's E-pretensioner unit 14P connector terminal No. 11; replace the floor wire harness, then clear the DTC.