Troubleshooting & error codes

18 of 18

• 1-11

  Solenoid output open circuit

  Cause: A solenoid wire is not connected, a pin is bent at the gearbox connector, or a cold/broken solder joint in the mechatronic modification.

  Fix: Check harness continuity to the gearbox plug, inspect the connector pins, and re-inspect the modification solder joints. Solenoid reference resistances: solenoids 1-7 = 5.5Ω, solenoid 8 = 10Ω, solenoid 9 = 25Ω.

• 13

  Power ground not connected

  Cause: Ground difference greater than ~2V between TCU ground and chassis.

  Fix: Verify the power-ground path (pins 43-45) and TCU grounds (pins 1-3); use a solid dedicated chassis ground point.

• 14-16

  Supply voltage too low

  Cause: Weak battery, undersized power wire, or a bad/blown fuse on the battery feed.

  Fix: Check battery charge, the wire gauge on pins 51-53, and the 15A fuse. Battery +12V must be constant (not ignition-switched).

• 17-23

  RPM / speed sensor failure

  Cause: Wrong engine-speed sensor type, no signal conditioning, or a trigger wheel with too few teeth.

  Fix: Feed a clean 0-5V square wave to pin 65; condition VR or 12V Hall signals; use a 36-1 or 60-2 wheel. Do not use a filtered tacho output.

• 25-29

  Pressure sensor signal fault

  Cause: Sensor wiring fault or a short to ground.

  Fix: Check the sensor wiring and connector for shorts or breaks.

• 31

  Oil temperature sensor failure

  Cause: Transmission fluid temperature sensor or its wiring is faulty.

  Fix: Check the oil temp sensor connector and wiring (TCU pin 14, gearbox plug pin 13).

• 32

  CAN1 no message (gear selector)

  Cause: The CAN1 bus to the gear selector is not communicating.

  Fix: Check CAN1 wiring to the selector (TCU pins 68/69), confirm the correct selector protocol, and verify bus termination.

• 33

  CAN2 no message (engine ECU)

  Cause: Most common first-start fault. CAN H/L swapped, the wrong CAN protocol selected in TunerPro, missing bus termination (needs 60Ω total across the two CAN wires), the ECU not running during the test, or an ECU with no native support.

  Fix: Swap CAN H/L (TCU pins 66/67), select the correct CAN profile for your ECU in TunerPro, confirm 60Ω total bus termination, and make sure the engine ECU is powered and running when you test.

• 61-104

  Internal fault / over-temperature

  Cause: The TCU itself is too hot or has an internal fault.

  Fix: Let the unit cool and improve airflow at its mounting location. If it persists, contact TurboLamik.

• 105

  Maps newer than driver software

  Cause: The loaded map is from a newer TCU firmware than your TunerPro driver files.

  Fix: Update TunerPro and the XDF/ADX driver files to the latest version from download.turbolamik.eu (or load a matching older map).

• 112 / 122 / 132 ...

  Solenoid resistance too high (PCB wiring)

  Cause: A cold solder joint or damaged PCB trace inside the modified mechatronic unit.

  Fix: Re-inspect and reflow the modification solder joints; replace the PCB if a trace is damaged. Intermittent codes that clear and return usually mean a vibrating cold joint.

• 1X6 / 1X7 / 1X8

  Solenoid short to gearbox case

  Cause: Internal contamination or a ground fault inside the mechatronic unit.

  Fix: Measure resistance from the affected pin to the gearbox case: it must be greater than 1MΩ. If not, the mechatronic unit needs replacement.

• Symptom

  Car will not move after first startup

  Cause: Mechatronic modification not completed correctly, no power reaching the TCU, or the wrong CAN profile leaving the TCU in fallback.

  Fix: Confirm the TCU/display is alive, read any error codes, and check all solenoid resistances and the power feed on pins 51-53.

• Symptom

  Harsh or jerky shifts from new

  Cause: Adaptation has not been run yet, or the torque value the TCU sees is wrong.

  Fix: Get the torque reading correct first (watch clutch slip in TunerPro), then run the adaptation drive cycle (20+ upshifts per gear at 55-80°C oil temperature).

• Symptom

  Shifts fine cold but harsh or slipping when warm

  Cause: Overheating fluid with a marginal cooler, or adaptation was learned with cold fluid and wrong values.

  Fix: Fit a thermostatic bypass or external cooler, then reset adaptations and re-learn once the cooling is sorted.

• Symptom

  Gear hunting / constant up-down shifting

  Cause: ATF level incorrect (must be checked at the right temperature with the engine running), or contaminated pressure regulators.

  Fix: Check the ATF level per the correct procedure; if contamination is suspected, do a dynamic fluid flush.

• Symptom

  No start after mechatronic service

  Cause: The drive position sensor is not seated correctly; it needs the ZF guide pins during reassembly.

  Fix: Reassemble the mechatronic unit using the proper ZF service guide pins so the position sensor seats square.

• Symptom

  Adaptation never completes ('A' symbol never appears)

  Cause: Not all adaptation conditions are met at once. The usual miss is the torque reading being 0 or out of range because CAN is not configured.

  Fix: Hit every condition together: oil 55-80°C, RPM 1600-3200, throttle above 2%, torque 80-140 Nm, drive program 0, gears 3-7. Fix the torque/CAN setup first.