Quick Diagnostic: MID 130 PSID 27
Select FMI for Diagnostic Path:
FMI 0: Unintentional Disengagement
Cause: Control valve leaking air into cylinder.
Symptom: TECU fights to keep clutch engaged. Yellow warning.
FMI 1: Unintentional Engagement
Cause: Air leak (Valve, Hose, or Cylinder).
Symptom: System cannot maintain disengagement. Red warning.
FMI 7 / 12 / 14: Mechanical / Slipping
Cause: Physical clutch failure or slipping detected.
Symptom: Engine torque limited, stuck in gear.
FMI 11: Unknown Fault (Clutch Drag)
Cause: Drive detected while clutch is disengaged.
Symptom: Hard gear engagement, warped flywheel.
FMI 0 – Step 1: Leak Test & Control
Run Tech Tool > Leak Test. If it fails, replace the Clutch Control Valve and calibrate.
FMI 0 – Step 2: TECU Signal
Swap TECU to rule out incorrect solenoid signaling.
FMI 1 – Step 1: External Seals
Check valve gasket. Swap Clutch Control Valve. Re-run Leak Test.
FMI 1 – Step 2: Internal Integrity
Remove Trans. Bucket Test the Cylinder and Braided Hose.
FMI 11 – Step 1: Input Shaft Speed Test
Jack drive wheel, release brake. Run Input Shaft Speed Test. Can you hold the wheel still while clutch is disengaged?
FMI 11 – Step 2: Triage Check
Swap TECU to rule out speed sensor interpretation errors.
FMI 7/12/14 – Step 1: Performance Tests
Run Performance Test. If results are normal, proceed to TECU swap.
FMI 7/12/14 – Step 2: Final Isolation
Swap TECU and calibrate. If fault remains, pull transmission.