DTC C1270-11

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

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

DTC (VSA)

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
   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 .

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 automatic brake hold switch .

3. Shorted wire check (BRAKE HOLD line)

   -1. Disconnect the following connectors.

   Automatic brake hold switch 6P connector *1

   Automatic brake hold switch 12P connector *2

   Gauge control module connector A (32P)

   *1: Automatic brake hold switch 6P connector type

   *2: Automatic brake hold switch 12P connector type

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

   Test condition	Vehicle OFF (LOCK) mode
   	Automatic brake hold switch 6P connector *1: disconnected
   	Automatic brake hold switch 12P connector *2: disconnected
   	Gauge control module connector A (32P): disconnected
   Test point 1	Automatic brake hold switch 6P connector (female terminals) No. 3 *1: Automatic brake hold switch 12P connector (female terminals) No. 12 *2:
   Test point 2	Body ground

   *1: Automatic brake hold switch 6P connector type

   *2: Automatic brake hold switch 12P connector type

   Automatic brake hold switch 6P connector type 

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

   Automatic brake hold switch 12P connector type 

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

   Is there continuity?

   YES 

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

   NO 

   Go to step 4.

4. Gauge control module check (substitution)

   -1. Substitute a known-good gauge control module .

   -2. Reconnect the following connectors.

   Automatic brake hold switch 6P connector *1

   Automatic brake hold switch 12P connector *2

   Gauge control module connector A (32P)

   *1: Automatic brake hold switch 6P connector type

   *2: Automatic brake hold switch 12P connector type

   -3. Turn the vehicle to the ON mode.

   -4. Clear the DTC with the HDS.

   -5. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.

   -6. Check for DTCs with the HDS.

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

   Is DTC C1270-11 indicated?

   YES 

   Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .

   NO 

   Replace the gauge control module .