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TM-178 < COMPONENT DIAGNOSIS > [5AT: RE5R05A] P0734 4GR INCORRECT RATIO P0734 4GR INCORRECT RATIO Description INFOID:0000000005274053 This malfunction is detected when the A/T does not shift into 4GR position as instructed by TCM. This is not On Board Diagnosis Logic INFOID:0000000005274054 • This is an OBD-II self-diagnostic item. when TCM detects any inconsistency in the actual gear ratio. Possible Cause INFOID:0000000005274055 • Input clutch solenoid valve DTC Confirmation Procedure INFOID:0000000005274056 CAUTION: Always drive vehicle at a safe speed. WITH CONSULT-III 1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III. 2. Make sure that “ATF TEMP 1” is within the following range. ° C – 180 ° C If out of range, drive vehicle to warm ATF or stop engine to cool ATF. 3. Select “4TH GR FNCTN P0734” of “DTC & SRT CONFIRMATION” mode for “TRANSMISSION” with 4. Drive vehicle and maintain the following conditions. − 50 rpm or more INPUT SPEED: 300 rpm or more 5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from CAUTION: If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS”. In TM-151, "CONSULT-III Function (TRANS- If “COMPLETED RESULT NG” is detected, go to . If “STOP VEHICLE” is detected, go to the following step. 6. Stop vehicle. 7. Drive vehicle in “D” position allowing it to shift from 1GR to 5GR and check shift timing and shift shock. - Touch “OK” to complete the inspection when normally shifted from the 1GR to 5GR. - Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1GR to 5GR. Go to 271, "Check Before Engine Is Started" . - Perform TM-151, "CONSULT-III Function (TRANSMISSION)" when not shifted from the 1GR to 5GR. (Neither “OK” nor “NG” are indicated.) WITH GST |