P0731

Test 312-315:

Test 316:

SYMPTOM:
P0731-GEAR RATIO ERROR IN 1ST

When Monitored and Set Condition:
P0731-GEAR RATIO ERROR IN 1ST
When Monitored: The transmission gear/speed ratio is monitored continuously while the transmission is in gear. This code is set if the gear/speed ratio is not correct for a period of time.
Set Condition: A hard code is set within 3 seconds, an intermittent code sets with 3 seconds, an intermittent code sets within 15 seconds. Codes P0731, P0732, P0733, P0734 set if the ratio of the input RPM (NO to output RPM (No) does not match the given gear ratio.

POSSIBLE CAUSES
- CHECKING SYMPTOMS AND POSSIBLE CAUSES
- LOW BATTERY VOLTAGE CAUSING SYMPTOM
- INTERMITTENT CODE P0731

Test 106-111:

Test 112-115:

Test 116-120:

SYMPTOM:
ADDITIONAL GEAR RATIO ERROR IN 1ST (P0731)

POSSIBLE CAUSES
- UD AND L-R CLUTCH VOLUME INDEXES OUT OF SPEC
- LTD AND L-R PRESSURES < 95 PSI AT 2000 RPM
- TRANSAXLE NEEDS REPAIR
- L-R SWITCH VALVE STUCK IN REV
- UD ACCUMULATOR SEALS WELDED TOGETHER
- TRANSAXLE SEALS ARE DEFECTIVE
- CUST COMP DELAYED 1ST OR REV ENGAGE/COAST DOWN STOP BUMP
- UD PRESSURE < 5 PSI IN 4TH GEAR
- L-R ACCUM SEALS WELDED TOGETHER
- TCM FAULT CAUSES LOW UD PRESSURE
- TRANSAXLE DEFECT