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ON-BOARD DIAGNOSTIC 05–02–28 DTC P0733 A3U050201030W14 Diagnostic procedure DTC P0733 Gear 3 incorrect (Incorrect Gear Ratio Detected) DETECTION CONDITION • PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when Monitoring condition: — ATF temperature 20 °°°° C {68 °°°° F} or above. — Driving in 3 GR in D range. P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773. Diagnostic support note: • This is a continuous monitor (CCM). • MIL does not illuminate. • O/D OFF indicator light flashes if PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA is not available. • Pending code is not available. • DTC stored in the PCM memory. POSSIBLE CAUSE • ATF level low • Deteriorated ATF • Shift solenoids A or C stuck • Pressure control solenoid stuck • Line pressure low • 3-4 clutch slipping • Forward clutch slipping • Control valve stuck (Bypass, TCC or 3-4 shift valve) • Oil pump • PCM malfunction STEP INSPECTION ACTION 1 VERIFY RELATED REPAIR INFORMATION • Check for related Service Bulletins availability. • Is any related repair information available? Yes Perform repair or diagnosis according to available repair information. No Go to next step. 2 CHECK ATF CONDITION • Check ATF condition. • Is it okay? Yes Go to next step. No Replace transaxle, then go to Step 8. 3 CHECK ATF LEVEL • Start engine. • Warm up ATX. • Is ATF level within specification? Yes Go to next step. No Adjust ATF level, then go to Step 8. 4 INSPECTION SHIFT SOLENOID VALVE A AND • Perform inspection of operation. (See 05–17– • Verify the click sound of shift solenoid A and C • Was click heard from solenoids? Yes Go to next step. No Replace solenoid that you could not hear click sound, then 1712-1U-01G(05-02).fm 28 ページ 2001年6月29日 金曜日 午後4時35分 |