DTC B10E7-16: IG1 Relay Circuit Malfunction [Start Stop Unit]: Notes
DTC B10E7:16 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
IG1 relay circuit malfunction |
| Detection condition |
- Start stop unit detects the IG1 monitor voltage of less than 2.5 V for 1 s or more while the engine is not being cranked with the ignition switched ON (engine off or on).
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| Fail-safe |
Not applicable |
| Possible cause |
- IG1 relay malfunction
- IG1 relay circuit malfunction
- Short to ground in wiring harness between MAIN 200 A fuse and IG1 relay terminal D
- MAIN 200 A fuse malfunction
- Open circuit in wiring harness between battery positive terminal and IG1 relay terminal D
- Start stop unit connector or terminal malfunction
- Wiring harness between IG1 relay terminal C and start stop unit terminal 1B malfunction
- Short to ground in wiring harness between IG1 relay terminal C and start stop unit terminal 1B
- C/U IG1 15 A fuse malfunction
- Wiring harness between IG1 relay terminal C and start stop unit terminal 1B malfunction
- C/U IG1 15 A fuse malfunction
- Open circuit in wiring harness between IG1 relay terminal C and start stop unit terminal 1B
- Start stop unit malfunction
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 Courtesy of MAZDA MOTORS CORP.
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