C1140high severityChassis
Actuator Relay Malfunction
on 2003 Infiniti FX45 4.5L V8 · AWD
What this code means
The ABS/VDC actuator relay that powers the hydraulic pump and solenoids is faulty or not switching properly. No direct OBD P-code equivalent.
Symptoms
- ABS warning light on
- VDC/traction control disabled
- No pump operation during braking
Common causes
- Failed actuator relay
- Corroded relay connector
- Wiring open or short to relay
- Faulty ABS control unit
Diagnostic steps
- Scan for C1140 and check freeze frame
- Inspect actuator relay and connector
- Test relay coil and contacts
- Check ground and power supply to actuator
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ANCEL AD410 →
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C0021
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C0023
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C0024
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C0025
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C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic