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DTC work support item Description Check items (Possible cause) 4TH GR FNCTN P0734 Following items for “A/T 4th gear function (P0734)” can be con- I Self-diagnosis status (whether the diagnosis is being con- I Self-diagnosis result (OK or NG) I Shift solenoid valve A I Shift solenoid valve B I Overrun clutch solenoid valve I Line pressure solenoid valve I Each clutch I Hydraulic control circuit TCC S/V FNCTN P0744 Following items for “A/T TCC S/V function (lock-up) (P0744)” I Self-diagnosis status (whether the diagnosis is being con- I Self-diagnosis result (OK or NG) I Torque converter clutch sole- I Each clutch I Hydraulic control circuit DIAGNOSTIC PROCEDURE WITHOUT CONSULT-II NCAT0022S07 OBD-II Self-diagnostic Procedure (With GST) NCAT0022S0701 Refer to EC-101, section “Generic Scan Tool (GST)”. OBD-II Self-diagnostic Procedure (No Tools) NCAT0022S0702 Refer to EC-81, “Malfunction Indicator Lamp (MIL)”. SAT491J SAT851J TCM Self-diagnostic Procedure (No Tools) NCAT0022S0703 Preparation Turn ignition switch to “OFF” position. 2. Connect the handy type vacuum pump to the throttle opener 3. Disconnect the throttle position switch harness connector. 4. Turn ignition switch to “ON” position. 5. Check continuity of the closed throttle position switch. Continuity should exist. (If continuity does not exist, check throttle opener and 6. Go to “TCM self-diagnostic procedure (No tools)”. GI MA EM LC EC FE CL MT AX SU BR ST RS BT HA SC EL IDX ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION CONSULT-II (Cont’d) AT-49 |