Code
C1350
MITSUBISHI
C — Chassis
Rear inlet valve
Views:
UK: 17
EN: 24
RU: 18
AI status
Completed
Completed
100%
Causes
- Open, shorted, or intermittent wiring to the rear inlet valve
- Corroded or poor connector at the valve or ABS module
- Faulty rear inlet solenoid (stuck, shorted coil, internal leakage)
- Contamination or debris in hydraulic unit preventing valve movement
- Low or contaminated brake fluid
- Faulty ABS/hydraulic control module (driver circuit)
Symptoms
- ABS warning lamp (and/or traction control lamp) illuminated
- Possible reduced or altered ABS operation during braking
- Brake pedal feel may be different (pulsation or firmer/softer than normal)
- Unusual noise from ABS pump/valve area when ABS operates
- Stored ABS-related fault codes, possibly multiple chassis codes
What to check
- Read and record all stored ABS/chassis codes and freeze frame data with a scan tool
- Visually inspect wiring and connectors to the rear inlet valve and ABS unit for damage, corrosion, or loose pins
- Check battery voltage and engine ground integrity (perform tests with systems under load)
- Measure solenoid coil resistance at the valve connector and compare to service specification
- Backprobe the valve connector while performing an actuator test to confirm control signal (voltage/PWM) and ground
- Perform a scan-tool commanded actuator/solenoid test if available
Signal parameters
- Supply voltage: nominal battery voltage (approx. 11–14 V) to the valve circuit when commanded; verify under load
- Command signal: typically a PWM control from ABS module (0–battery voltage); frequency and duty vary by design—check service manual
- Coil resistance: varies by model—commonly in the range of ~10–50 ohms; consult manufacturer specifications
- Expected current draw: depends on coil and duty cycle—verify with manufacturer data before condemning module
- No-voltage (open) indicates wiring/open coil; near-zero resistance indicates shorted coil
Diagnostic algorithm
- Connect a capable scan tool, read and record codes and live data. Note conditions when code set (speed, temperature, event).
- Clear codes and attempt to re-create the fault by driving or performing ABS activation tests. Confirm code returns.
- Visually inspect the wiring harness and connector for the rear inlet valve. Repair any obvious damage, corrosion, or loose pins.
- With ignition off, disconnect the valve connector and measure coil resistance. Compare to service specification. Replace valve if out of range.
- Backprobe the valve connector, turn ignition on, and command the valve with the scan tool while observing the control signal (voltage/PWM) and ground. Use an oscilloscope if available for PWM verification.
- If control signal is present but valve does not respond and coil resistance is correct, suspect a mechanically seized or hydraulically blocked valve—inspect/replace hydraulic unit or valve.
- If no control signal, check continuity and resistance between the ABS module and valve connector, verify fuses, and check module grounds. Repair any wiring faults.
- If wiring and valve are good but no proper command or intermittent output, suspect ABS module driver failure—consult manufacturer procedures for module testing/replacement.
- After repairs, bleed brakes if hydraulic unit or components were opened, clear codes, and perform road test and ABS self-tests to confirm the issue is resolved.
Likely causes
- Damaged harness between ABS module and rear inlet valve
- Corroded connectors at the valve or ABS hydraulic unit
- Solenoid coil out of specification or mechanically seized valve
- Debris or internal hydraulic failure in ABS actuator
- Intermittent ground or low system voltage under load
- ABS module output transistor failure
Fault status
Status
Rear inlet valve circuit/operation fault detected — possible electrical fault (open/short/intermittent) or hydraulic valve malfunction.
Repair difficulty: Medium
Diagnostic time: 1-3 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email