DTC B2858-12

DTC B2858-12  : Driver's E-Pretensioner Motor Circuit Short to Power

NOTE: 

• Before doing this troubleshooting procedure, review General Troubleshooting Information .
• 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.
• When you replace the E-pretensioner unit, check the HDS and replace the indicated side of E-pretensioner unit on the HDS.

DTC (E-pretensioner)

1. Problem verification

   - 1. Clear the DTCs with the HDS.

   - 2. Turn the vehicle to the ON mode.

   - 3. Check for DTCs with the HDS.

   DTC Description	DTC
   B2858-12 Driver's E-Pretensioner Motor Circuit Short to Power

   Is DTC B2858-12 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

2. Shorted wire check (L EPT MTR + line to power)

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

   - 2. Disconnect the following connector.

   Driver's E-pretensioner unit 16P connector

   - 3. Turn the vehicle to the ON mode.

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

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

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

   Is there 3.9 V or more?

   YES 

   Repair a short to power in the wire between the driver's E-pretensioner unit and the driver's E-pretensioner motor.

   NO 

   The L EPT MTR + wire is OK. Replace the E-pretensioner unit .