Transmission Control Systems

If a diagnostic trouble code is displayed during the diagnostic trouble code check, check the circuit listed for that code in the table below.









2 trip detection logic
- This indicates items for which 2 trip detection logic is used. With this logic, when a logic malfunction is first detected, the malfunction is temporarily stored in the ECM memory. If the same case is detected again during the second drive test, this second detection causes the O/D OFF indicator light to blink.



- The 2 trip repeats the same mode twice. (However, the ignition switch must be turned OFF between the 1st trip and 2nd trip.)

HINTS:
^ If the malfunction returns to normal while a malfunction warning is being output, the "O/D OFF" indicator light will stop blinking and go OFF. However, the diagnostic trouble code is retained in memory until it is cleared from memory.

^ If the diagnosis system outputs a diagnostic trouble code even though the "O/D OFF" indicator was not blinking, there is an intermittent problem. Check all the connections in the circuits corresponding to that code.

^ Codes 42, 62, 63 and 64 are limited to a shorted or an open circuit in the electrical system comprised of the solenoids, wire harnesses, and connectors. The ECM is unable to detect mechanical trouble (sticking, for example) in the solenoid valves.

^ If the speed sensors No.1 and No.2 happen to fail simultaneously, the ECM will neither alert the driver by blinking the "O/D OFF" indicator nor record any diagnostic trouble code. It will, however, decide that the vehicle can be driven only in 1st and none of the other gears, shifting upward will then be prohibited.