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Home >> Mazda >> 1994 >> 626 V6-2496cc 2.5L DOHC >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Scan Tool Testing and Procedures >> Outline >> Page 1

Page 1

OUTLINE

Hold Switch

- If there is an open or short circuit in the hold switch or harness, selection to/from hold mode is not possible.


Park/Neutral Switch

- If a malfunction occurs in the wiring of the Park/Neutral switch, the powertrain control module (Transaxle) cannot determine the range position, and shifting may be abnormal in D, S, and L ranges. There may not be a shift to Fourth gear.


Throttle Position Sensor

- If there is an open or short circuit in the throttle position sensor or harness, diagnostic trouble code No.12 is displayed by the self-diagnosis function, and hold mode is canceled.

- If a malfunction occurs in the throttle position sensor, the powertrain control module (Transaxle) judges the throttle opening to be at a constant 4/8 stroke.


Idle Switch

- If there is an open circuit in the idle switch or harness, the powertrain control module (Transaxle) does not correct throttle characteristics. In case of misadjustment of throttle position sensor, lockup is not canceled when cruising (throttle fully closed) and vehicle jolts when accelerator pedal is depressed or released.

- If there is a short circuit in the idle switch or harness, the line pressure will be low (does not match throttle characteristics) and the transaxle may slip when shifting.


Vehicle Speed Pulse Generator

- If there is no input signal from the vehicle speed pulse generator, diagnostic trouble code No.55 is displayed by the self-diagnosis function and hold mode is canceled.

- If a malfunction occurs in the vehicle speed pulse generator, shifting is made based on signals from speedometer.

- If a malfunction occurs in the vehicle speed pulse generator and vehicle speed sensor at the same time, 1-2, 2-3 and 3-4 shift solenoid valve go OFF, and D and S ranges go to Third gear position. L range goes to 1st gear position, and lockup is inhibited.


Vehicle Speed Sensor

- If there is no input signal from the vehicle speed sensor, diagnostic trouble code No.06 is displayed by the self-diagnosis function and hold mode is canceled.

- If a malfunction occurs in the vehicle speed sensor, shifting is made normal based on signals from vehicle speed pulse generator.


Stoplight Switch

- If there is an open circuit in the stoplight switch or harness, lockup is not canceled when brake pedal is pressed.

- If there is a short circuit in the stoplight switch or harness, lockup and slip lockup is inhibited, but slip lockup functions when coasting.


ATF Thermosensor

- If there is an open or short circuit in the ATF thermosensor or harness, diagnostic trouble code No.56 is displayed by the self-diagnosis function but hold mode operates normally.

- If a malfunction occurs in the ATF thermosensor, shift shock will be strong.

- The hold indicator lamp does not flash if there is an open and short circuit in the ATF thermosensor or harness; however the diagnostic trouble code No. is memorized in the powertrain control module (Transaxle), and the diagnostic trouble code No. is displayed when TAT terminal is grounded.


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