Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSVOLKSWAGEN1991JETTA L4-1984CC 2.0L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSRECALL - REVISED VEHICLE SYSTEM WORK PROCEDURESWORK PROCEDUREI. CHECK/REPLACE TRANSMISSION CONTROL MODULE (TCM)
1991 Volkswagen Jetta L4-1984cc 2.0L DOHC
I. Check/Replace Transmission Control Module (Tcm)
1991 Volkswagen Jetta L4-1984cc 2.0L DOHCSECTION I. Check/Replace Transmission Control Module (Tcm)
I. Check/replace Transmission Control Module (TCM)
- Connect Engine Scan Tool VAG-1551 and check Part No. of installed TCM. Turn ignition OFF. Also visually check TCM for color dot.
Note
Transmission Control Module (TCM) must be removed to visually identify the unit.
- with ignition switched ON, fully depress accelerator one time.
Note
Since tester printouts tend to fade, make a photocopy of the printout and attach to repair order hard copy for future reference. Identify removed Transmission Control Modules (TCM) with a completely filled out Warranty parts tag and return TCM to your Parts Department for shipment to VWoA Warranty Parts Test Center.
- Connect Engine Scan Tool VAG-1551 and check Part No. of installed TCM. Turn ignition OFF. Also visually check TCM for color dot.
Note
Transmission Control Module (TCM) must be removed to visually identify the unit.
- with ignition switched ON, fully depress accelerator one time.
Note
Since tester printouts tend to fade, make a photocopy of the printout and attach to repair order hard copy for future reference. Identify removed Transmission Control Modules (TCM) with a completely filled out Warranty parts tag and return TCM to your Parts Department for shipment to VWoA Warranty Parts Test Center.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.