DTC C1128-4A: Electric Parking Brake Switch Circuit Malfunction: Notes
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
| Description |
Electric parking brake switch circuit malfunction |
| Detection condition |
- Electric parking brake control module detects an open circuit in the electric parking brake switch circuit.
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| Fail-safe |
- The electric parking brake control module operates the electric parking brake under any of the following conditions while the vehicle is stopped.
- Ignition is switched ON (engine off or on) and selector lever is in P or N position (ATX)
- Ignition is switched ON (engine off or on) and shift lever is in neutral position (MTX)
- Ignition is switched ON (engine off or on) and driver's door is open from closed condition
- Ignition is switched off and brake pedal is depressed
- Ignition is switched off and driver's door is open
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| Possible cause |
- Electric parking brake switch connector or terminal malfunction
- Electric parking brake switch malfunction
- Electric parking brake control module connector or terminal malfunction
- Open circuit in wiring harness between the following terminals:
- Electric parking brake switch terminal C-Electric parking brake control module terminal 2K
- Electric parking brake switch terminal G-Electric parking brake control module terminal 1W
- Electric parking brake control module malfunction
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