DTC C1270-11

DTC C1270-11  : Automatic Brake Hold Switch Signal Circuit Short

NOTE: Before you troubleshoot, review the general troubleshooting information .

DTC (Electric servo brake)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC	Freeze Frame
   C1270-11 Automatic Brake Hold Switch Signal Circuit Short

   Is DTC C1270-11 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 . If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

2. Automatic brake hold switch check

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

   -2. Check the automatic brake hold switch .

   Is the automatic brake hold switch OK?

   YES 

   Go to step 3.

   NO 

   Replace the electric parking brake/automatic brake hold switch .

3. Shorted wire check (BRAKE_HOLD line)

   -1. Disconnect the following connectors.

   Electric parking brake/automatic brake hold switch 12P connector

   Gauge control module connector A (32P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Electric parking brake/automatic brake hold switch 12P connector: disconnected
   	Gauge control module connector A (32P): disconnected
   Test point 1	Electric parking brake/automatic brake hold switch 12P connector (female terminals) No. 7:
   Test point 2	Body ground

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

   Is there 1 MΩ or more?

   YES 

   Replace the gauge control module .

   NO 

   Repair a short to body ground in the wire between the electric parking brake/automatic brake hold switch and the gauge control module.