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P0734 4GR INCORRECT RATIO TM-67 < DTC/CIRCUIT DIAGNOSIS > C E F G H I J K L M A B TM N O P If “TESTING” does not appear on CONSULT for a long time, select “SELF-DIAG RESULTS”. In case a 1st trip DTC other than P0734 is shown, refer to “ TM-37, "CONSULT Function (TRANSMIS- ”. 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 167, "Check Before Engine Is Started" - TM-37, "CONSULT Function (TRANSMISSION)" when not shifted from the 1GR to 5GR. (Neither “OK” nor “NG” are indicated.) Diagnosis Procedure INFOID:0000000007357168 1. CHECK CAN COMMUNICATION LINE Perform self-diagnosis. Refer to TM-37, "CONSULT Function (TRANSMISSION)" , . Is a malfunction in the CAN communication indicated in the results? YES >> Check CAN communication line. Refer to NO >> GO TO 2. 2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT Check TCM power supply and ground circuit. Refer to OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. 3. DETECT MALFUNCTION ITEM Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector. OK >> GO TO 4. NG >> Repair or replace damaged parts. 4. REPLACE CONTROL VALVE WITH TCM 1. Replace control valve with TCM. Refer to TM-176, "Removal and Installation" . 2. Perform TM-66, "DTC Confirmation Procedure" OK or NG OK >> INSPECTION END NG >> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to "Check Before Engine Is Started" . August 2012 2012 Pathfinder |