Honda HR-V Owners & Service Manuals

Honda HR-V: DTC B12C5 Engine Start/Stop Switch Failure

Keyless Access Power Control Unit - Diagnostics

DTC (Power Control Unit)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.

1. Problem verification:

  1. Clear the DTCs with the HDS.

Clear DTCs

  1. Press the engine start/stop button at least 20 times, then wait for at least 20 seconds.
  2. Check for DTCs with the HDS.

Keyless Access Power Control Unit - Diagnostics

Is DTC B12C5 indicated?

YES

Go to step 2.

NO

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Determine possible failure area (+B SMART line, SSB GND line, or other):

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Disconnect the following connector.

Engine start/stop switch 10P connector

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

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Is there battery voltage?

YES

The +B SMART and SSB GND wires are OK. Go to step 3.

NO

Go to step 6.

3. Shorted wire check (SS2 (-), SS1 (+) lines):

  1. Disconnect the following connector.

Keyless access control unit connector B (36P)

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

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Is there continuity?

YES

Repair short to ground in the wire.

NO

The SS2 (-) and SS1 (+) wires are not shorted. Go to step 4.

4. Open wire check (SS2 (-), SS1 (+) lines):

Check for continuity between test points 1 and 2 respectively.

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Is there continuity?

YES

The SS2 (-) and SS1 (+) wires are OK. Go to step 5.

NO

Repair an open or high resistance in the wire.

5. Engine start/stop switch check:

Do the engine start/stop switch test.

Is the engine start/stop switch OK?

YES

Replace the keyless access control unit.

NO

Replace the engine start/stop switch.

6. Open wire check (+B SMART line):

Measure the voltage between test points 1 and 2.

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Is there battery voltage?

YES

Repair an open or high resistance in the SSB GND wire.

NO

Repair an open or high resistance in the +B SMART wire.

    READ NEXT:

     DTC B12C6 Electric Steering Lock Switch C/D Monitor Circuit Failure

    DTC (Power Control Unit) NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN

     DTC B12C7 Electric Steering Lock Motor Circuit Failure

    DTC (Power Control Unit) NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN

     DTC B12D0, B12D1, B12D2

    NOTE: Refer to the DTC code shown on the display, and then inspect the connectors and terminals based on the instructions in the table below. DTC (Power Control Unit) NOTE: If you are troubleshoot

    SEE MORE:

     AWD System DTC Troubleshooting Index (AWD)

    TESTING AWD CONTROL UNIT INITIALIZATION (AWD) Procedure NOTE: Whenever the AWD control unit is replaced, it must be initialized. Park the vehicle on a flat and level surface. 1. HDS - Connect 2. AWD Control Unit - Initialization Select the ADJUSTMENT in the AWD WITH INTELLIGENT CONTROL with t

     Front Brake Disc Removal and Installation

    Removal & Installation NOTE: Keep grease away from the brake disc and the brake pads. 1. Vehicle - Lift 2. Front Wheels - Remove 3. Brake Caliper - Remove Fig. 13: Brake Caliper Mounting Bolt Torque Specifications Remove the brake hose mounting bolt (A) Remove the caliper assembly (B). NOTE

    © 2019-2024 Copyright www.hohrv2.com