P0750

Description








Shift solenoid valves A and B are turned ON or OFF by the TCM in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and throttle position sensors. Gears will then be shifted to the optimum position.





TCM TERMINALS AND REFERENCE VALUE

ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code SET SOL A/CIRC with CONSULT-II or P0750 without CONSULT-II is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.

POSSIBLE CAUSE
Check the following items.
- Harness or connectors
(The solenoid circuit is open or shorted.)
- Shift solenoid valve A

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

NOTE: If "DTC Confirmation Procedure" has been previously conducted always turn ignition switch OFF and wait at least 5 seconds before conducting the next test.

After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II








1. Turn ignition switch ON and select "DATA MONITOR" mode for "ENGINE" with CONSULT-II.
2. Start engine.
3. Drive vehicle in D position and allow the transmission to shift 1 -> 2 ("GEAR").

WITH GST
Follow the procedure "With CONSULT-II".





WIRING DIAGRAM - AT - SSV/A

Diagnostic Procedure





1: CHECK VALVE RESISTANCE





2: CHECK VALVE OPERATION





3: CHECK POWER SOURCE CIRCUIT





4: CHECK DTC





5: CHECK TCM INSPECTION