Honda HR-V Owners & Service Manuals

Honda HR-V: DTC B1280 Turn Signal Switch Circuit Malfunction

Multiplex Integrated Control Unit (Micu) - Diagnostics

DTC (MICU)

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. Turn signal/hazard warning lights system check 1:

  1. Turn the vehicle to the ON mode.
  2. Check the parameter(s) below with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Are both data list values indicated OFF?

YES

Go to step 2.

NO

Go to step 4.

2. Turn signal/hazard warning lights system check 2:

  1. Operate the turn signal switch to the left or right position.
  2. Check the parameter(s) below with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Are both data list values indicated ON?

YES

Go to step 3.

NO

Intermittent failure, the system is OK at this time.

3. Shorted wire check (R TURN SW to L TURN SW line):

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

Combination light switch 12P connector

  1. Connect terminals A and B with a jumper wire.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Multiplex Integrated Control Unit (Micu) - Diagnostics

  1. Check the parameter(s) below with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Are both data list values correct?

YES

The R TURN SW wire and the L TURN SW wire is not shorted. Replace the combination light switch.

NO

Repair a short between the wires.

4. Shorted wire check (L TURN SW line or R TURN SW line):

  1. Check the parameter(s) below with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Is Turn Signal Switch (LEFT) value ON?

YES

Go to step 5.

NO

Go to step 6.

5. Shorted wire check (L TURN SW line):

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

Combination light switch 12P connector

  1. Check the parameter (s) below with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Is Turn Signal Switch (LEFT) value ON?

YES

Repair a short to ground in the wire.

NO

The L TURN SW wire is OK. Replace the combination light switch.

6. Shorted wire check (R TURN SW line):

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

Combination light switch 12P connector

  1. Check the parameter(s) below with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Is Turn Signal Switch (RIGHT) value ON?

YES

Repair a short to ground in the wire.

NO

The R TURN SW wire is OK. Replace the combination light switch.

    READ NEXT:

     DTC B1281, B1282, B1283, B1284 Front Wiper Position Circuit Malfunctions

    DTC Troubleshooting: B1281, B1282, B1283, B1284 DTC (MICU) NOTE : If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body

     DTC U1280 (MICU) B-CAN Communication Bus Line Error (BUS-OFF)

    DTC (MICU) 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 Diagn

     DTC U128D (MICU) MICU Lost Communication With Gauge Control Module

    NOTE : The DTC may be stored due to the grounding failure or the power source failure at the transmitting control unit (the grounding inspection and the power source inspection on each control unit

    SEE MORE:

     Opening and Closing the Moonroof

    ■Opening/Closing the Moonroof You can only operate the moonroof when the ignition switch is in ON (II)*1. Use the switch in the front of the ceiling to open and close the moonroof. ■ Automatic operation To open: Pull the switch back firmly. To close: Push the switch forward firmly. The moonr

     Fog Lights

    When the low beam headlights are on, turn the fog light switch on to use the fog lights. When the fog lights are on, the indicator in the instrument panel will be on. The fog lights go off when the headlights turn off, or when the daytime running lights are on. Daytime Running Lights The headlights

    © 2019-2025 Copyright www.hohrv2.com