Transmission Slipping
Symptom:TRANSMISSION SLIPPING
When Monitored and Set Condition
When Monitored: Engine rpm greater than 450 rpm, output speed greater than 180 rpm, no N2 - N3 input speed sensor errors present, no gear selector lever errors present, no ABS system errors, no transfer case errors present, and all wheel speeds between 70 - 380 rpm with no wheel slip detected. Set Condition: Calculated ratio not within allowable range for the engaged gear. No shifting operation.
Set Condition: The TCM constantly calculates the transmission ratio based on the N2 - N3 input speed signals and the calculated output shaft speed (CAN message from the ABS). The TCM will detect if the transmission is slipping or an invalid gear ratio is present
POSSIBLE CAUSES
- OTHER DTCS PRESENT
- AXLE - MECHANICAL - GEAR RATIO
- INTERNAL TRANSMISSION
- TCM - TRANSMISSION SLIPPING
Test 1:
