Initial Inspection and Diagnostic Overview

Problems which occur in the ECVT are often solved by conducting the basic inspection and adjustment procedures. Before troubleshooting the ECVT, always conduct the following preliminary checks to save time and labor.

In diagnosing the problem, it is best to first locate the part of the ECVT system (such as clutch, control unit, switches, hydraulic control valve, transmission, etc.) that is causing the problem.

Instruments required for checks. It is recommended that tachometer and circuit tester be located inside the driver compartment to facilitate measurements.
^ Engine tachometer
^ Circuit tester
^ Oil pressure gauge [0 - 3,432 kPa (0 - 498 psi) range]
^ Boost meter (used to measure intake manifold vacuum pressure)
^ Timing light

Preliminary checks.
^ Ensure that the necessary engine adjustments are made properly. Ensure idle speed, idle boost and ignition timing are all checked. Check engine rpm when the dashpot and lever come in contact with each other. If the engine operates erratically, check the stall engine speed.
^ Ensure the accelerator pedal, transmission control cable and carburetor linkages operate properly (Confirmation of the full-open and full-close functions).
^ Ensure the accelerator switch and throttle-position switch operate within the specified ranges in relation to the depression of the accelerator pedal.
^ Ensure the selector cable linkage is adjusted to the specified position and the inhibitor switch operates at the specified position.
^ Ensure the clutch control unit connector and the brush holder harness connector are connected properly.
^ Ensure the clutch control unit is self-diagnosed properly.
^ Ensure no leakage occurs at and around the transmisson.
^ Ensure the ATF level is in the specified range.