DTC P0689:00 [MZI-3.7]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0689:00 |
ECM/PCM power relay sense circuit low |
| DETECTION CONDITION |
- This DTC sets when the passive anti theft system (PATS) system indicates the key is in ON or START position and the ignition switch position run circuit indicates OFF, ACC, or LOCK position
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| POSSIBLE CAUSE |
- PATS system malfunction
- Ignition circuit fuse (MAIN, IG KEY 1, IG KEY 2)
- Open circuit between battery positive terminal and PCM terminal 1AJ
- Ignition switch malfunction
- Short to ground circuit between battery positive terminal and PCM terminal 1AJ
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 Courtesy of MAZDA MOTORS CORP.
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