Transmission Inputs
TRANSMISSION RANGE SENSOR CHECK OPERATION
| DTCs | P0706 - Out of range signal frequency for PWM TRS P0707, P0708 - Low /High duty cycle for PWM TRS |
| Monitor Execution | Continuous |
| Monitor Sequence | None |
| Sensors OK | |
| Monitoring Duration | 5 seconds of signal out of range |
TYPICAL TRS CHECK ENTRY CONDITIONS
| Auto Transmission Entry Conditions | Minimum | Maximum |
| battery voltage | 7v | 18v |
TYPICAL TRS MALFUNCTION THRESHOLDS
| PWM TRS: Frequency > 175 Hz or < 75 Hz, Duty Cycle > 90% or < 10% |
OUTPUT SHAFT SPEED SENSOR FUNCTIONAL CHECK OPERATION
| DTCs | P0720 - OSS circuit P0722 - OSS no signal |
| Monitor Execution | Continuous |
| Monitor Sequence | None |
| Sensors OK | TSS, Wheel Speed |
| Monitoring Duration | 30 seconds |
TYPICAL OSS FUNCTIONAL CHECK ENTRY CONDITIONS
| Auto Transmission Entry Conditions | Minimum | Maximum |
| Gear selector position | drive | |
| Engine rpm (above converter stall speed) OR | 3000 rpm | |
| Turbine shaft rpm (if available) OR | 1500 rpm | |
| Output shaft rpm | 300 - 650 rpm | |
| Vehicle speed (if available) | 12.5 - 15 mph |
TYPICAL OSS FUNCTIONAL CHECK MALFUNCTION THRESHOLDS
| Circuit/no signal - vehicle is inferred to be moving with positive driving torque and OSS < 100 to 200 rpm for 5 to 30 seconds |
TURBINE SHAFT SPEED SENSOR FUNCTIONAL CHECK OPERATION
| DTCs | P0715 - TSS circuit P0717 - TSS no signal |
| Monitor Execution | Continuous |
| Monitor Sequence | None |
| Sensors OK | OSS, Wheel Speed |
| Monitoring Duration | 30 seconds |
TYPICAL TSS FUNCTIONAL CHECK ENTRY CONDITIONS
| Auto Transmission Entry Conditions | Minimum | Maximum |
| Gear selector position | Forward range | |
| Engine rpm (above converter stall speed) OR | 3000 rpm | |
| Output shaft rpm OR | 600 - 650 rpm | |
| Vehicle speed (if available) | 12.5 - 15 mph |
TYPICAL TSS FUNCTIONAL CHECK MALFUNCTION THRESHOLDS
| Circuit/no signal - vehicle is inferred to be moving with positive driving torque and TSS < 200 rpm for 5 - 30 seconds |
SYSTEM VOLTAGE
| DTCs | P0882 - voltage out of range low P0883 - voltage out of range high |
| Monitoring Execution | Electrical - Continuous |
TRANSMISSION FLUID TEMPERATURE SENSOR FUNCTIONAL CHECK OPERATION
| DTCs (non-MIL) | P0712, P0713 or P0710 - Opens/shorts P1711 - in range failures P1783 - Transmission overtemperature (non-MIL fault, TFT > 275 deg F for 5 seconds) |
| Monitor Execution | Continuous |
| Monitor Sequence | None |
| Sensors OK | ECT substituted if TFT has malfunction |
| Monitoring Duration | 5 seconds for electrical, 600 seconds for functional check |
TYPICAL TFT STUCK LOW/HIGH CHECK ENTRY CONDITIONS
| Auto Transmission Entry Conditions | Minimum | Maximum |
| Engine Coolant Temp (hot or cold, not midrange) | > 100 °F | < 20 °F |
| Time in run mode | 500 - 600 sec | |
| Time in gear, vehicle moving, positive torque | 150 sec | |
| Vehicle Speed | 15 mph | |
| Time with engine off (cold start) OR | 420 min | |
| Engine Coolant Temp AND Trans Fluid Temp (inferred cold start) | 122 °F |
TYPICAL TFT MALFUNCTION THRESHOLDS
| Opens/shorts: TFT voltage <0.05 or > 4.6 volts for 5 - 12 seconds TFT Stuck low/high, i.e. TFT stuck at high temperature or stuck at low temperature): Stores a fault code if TFT stabilizes (stops increasing if temperature < 70 deg F, stops decreasing if temperature > 225 deg F) before reaching the temperature region where all MIL tests are enabled (70 to 225 deg F). If TFT remains constant (+/- 2 deg F) for approximately 2.5 minutes of vehicle driving outside the 70 to 225 deg F zone a P0711 fault code will be stored. Old logic used to indicate a "pass" for a single delta, and not test until the normal operating region (70-225 deg F) was reached. |
CAN
| DTCs | U0073 - CAN bus off U0100 - Lost communication with ECM |
| Monitoring Execution | Continuous |
| Monitoring Sequence | None |