DTC P0778: Notes
DTC P0778 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0778 |
2-4 brake solenoid valve circuit malfunction (open circuit/short circuit) |
| DETECTION CONDITION |
- Open circuit or short circuit in 2-4 brake solenoid signal system (while TCM monitors solenoid output voltage, the voltage that differs from the ON/OFF signal output by CPU in TCM is detected).
Diagnostic support note:
- This is continuous monitor (CCM).
- MIL does not illuminates.
- PENDING CODE is not available.
- FREEZE FRAME DATA is not available.
- O/D OFF indicator light flashes.
- DTC is stored in TCM memory.
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| POSSIBLE CAUSE |
- Open circuit between 2-4 brake solenoid valve terminal A and TCM terminal 2V
- Short to ground between 2-4 brake solenoid valve terminal A and TCM terminal 2V
- Short to power between 2-4 brake solenoid valve terminal A and TCM terminal 2V
- 2-4 brake solenoid valve malfunction
- Damaged connector between 2-4 brake solenoid valve and TCM
- TCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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