P0704

Code

GWM P — Powertrain

- Clutch Sensor Circuit Malfunction

Brand: GWM

Type: P — Powertrain

Views: UK: 2 EN: 4 RU: 5

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open or shorted clutch switch/sensor wiring
Failed clutch pedal position sensor or mechanical switch
Loose, corroded or damaged connector or terminal
Poor ground at ECM/PCM/TCM or control module
Intermittent contact from worn switch or broken wire
Faulty PCM/TCM or incorrect software (less common)

Symptoms

MIL (Malfunction Indicator Lamp) illuminated
Engine will not start if clutch-start inhibitor active
Cruise control or shift-inhibitor functions disabled
Unexpected or harsh shifting, inability to select gears (automatic mated to manual clutch)
Intermittent starting or no-crank condition when clutch depressed

What to check

Read freeze frame and related live PIDs with a scan tool (clutch switch state, vehicle speed, RPM)
Visually inspect clutch switch and pedal assembly for damage or misalignment
Check connectors for corrosion, bent pins, or pushed-out terminals at switch and module
Verify fuses and power/ground circuits for PCM/TCM and clutch switch circuit
Wiggle test the pedal wiring while monitoring live data for intermittent changes
Check for additional transmission or starter-related DTCs

Signal parameters

Typical clutch switch (binary) — closed = near 0 V (ground), open = battery voltage (approx. 9–14 V) with ignition ON; verify with scope or multimeter
Alternate clutch position sensors (analog) — expected 0.5–4.5 V sweep with pedal travel; check manufacturer spec if available
Switch continuity: closed 10 kΩ / OL
Intermittent faults: watch for voltage drop or bouncing between open/closed when pedal moved slowly

Diagnostic algorithm

Verify the DTC and capture freeze-frame/live data with scan tool; note conditions when code set (key on, engine off, during cranking, pedal position).
Perform a visual inspection of the clutch pedal area, switch mounting, and wiring harness for chafing, pinched wires, or connector damage.
With ignition ON, measure voltage at the clutch switch connector: verify reference voltage and switch output per signal_params. Operate pedal and observe change. If sensor is analog, check for smooth voltage change through travel.
Check continuity and resistance of switch contacts with pedal depressed/released. Compare to expected values. If readings are out of range, replace or repair switch.
Backprobe harness from switch to control module for open/short to power or ground. Repair any damaged wiring, secure connectors, and retest.
If wiring and switch are good, verify proper ground at the control module and check for corrosion or poor mating at module connector.
Clear codes and perform a road/bench test to confirm the fault does not return. If code returns and wiring/switch check out, consider module input circuit fault and evaluate/replace PCM/TCM only after thorough verification.
After repair, confirm proper operation of starting and shift-inhibit functions and retest for stored codes.

Likely causes

Clutch switch stuck open or welded contacts from wear
Broken or chafed wiring near pedal harness or bulkhead
Corroded connector pins at clutch switch or module connector
High resistance ground at control module causing false readings
Aftermarket pedal modification or incorrect replacement switch wiring

Fault status

⚠️ Status

Clutch sensor circuit malfunction detected — open/short/intermittent input to control module; may prevent starting or inhibit normal shift/cruise functions.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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P0704 — - Clutch Sensor Circuit Malfunction