OBD System Description - Comprehensive Component Rationality Monitor

OBD System Description - Comprehensive Component Rationality Monitor

Monitoring Procedure
Input signal of transmission range sensor (P0705), transmission fluid temperature sensor (P0711), input shaft speed sensor (P0717), output shaft speed sensor (P0722), TCC lock-up solenoid valve (P0741, P0742), shift solenoid valve (P0751, P0752, P0756, P0757), pressure control solenoid valve (P0961), TCM (P1702), CAN communication (U0073, U0100) are checked for circuit rationality by monitoring each sensor and vehicle condition.

DTC Description / Detecting Condition / Confirmation Procedure

P0705
Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (P R N D L Input). P0705

P0711
Refer to DTC P0711: Transmission Fluid Temperature Sensor "A" Circuit Range / Performance. P0711

P0717
Refer to DTC P0717. input Speed Sensor "A" Circuit No Signs P0717

P0722
Refer to DTC P0722: Output Speed Sensor Circuit No Signs P0722

P0741
Refer to DTC P0741 / P0742: Torque Converter Clutch Circuit Performance or Stuck OFF / Stuck ON. P0741

P0742
Refer to DTC P0741 / P0742: Torque Converter Clutch Circuit Performance or Stuck OFF / Stuck ON. P0742

P0751
Refer to DTC P0751 P0752: Shift Solenoid "A" Performance or Stuck OFF Shift Solenoid "A" Stuck ON. P0751

P0752
Refer to DTC P0751 P0752: Shift Solenoid "A" Performance or Stuck OFF Shift Solenoid "A" Stuck ON. P0752

P0756
Refer to DTC P0756 P0757. Shift Solenoid "B" Performance or Stuck OFF Shift Solenoid "B" Stuck ON. P0756

P0757
Refer to DTC P0756 P0757. Shift Solenoid "B" Performance or Stuck OFF Shift Solenoid "B" Stuck ON. P0757

P0961
Refer to DTC P0961: Pressure Control Solenoid "A" Control Circuit Range / Performance. P0961

P1702
Refer to DTC P0602 / P1702: Control Module Programming Error / Internal Control Module Check Sum Error. P1702

U0073
Refer to DTC U0073: Control Module Communication Bus Off. U0073

U0100
Refer to DTC U0100: Lost Communication with ECM. U0100

Transmission Range Sensor Rationality Monitor

Operation

Enable conditions

Typical malfunction thresholds

Transmission Fluid Temperature Sensor Rationality Monitor

Operation

Enable conditions

Input Shaft Speed Sensor Rationality Monitor

Operation

Enable conditions

Typical malfunction thresholds

Output Shaft Speed Sensor Rationality Monitor

Operation

Enable conditions

Typical malfunction thresholds

TCC Solenoid Valve Rationality Monitor

Monitoring procedure
TCM monitors operation (engagement condition) of TCC in response to ON/OFF command to the TCC solenoid using input and output speed sensor signals.

Operation

Enable conditions

Typical malfunction thresholds

Shift Solenoid Valve "A" Rationality Monitor

Monitoring procedure
TCM calculates the actual transmission gear ratio from input and output speed sensor signals and monitor it.
TCM detects a trouble when the actual transmission gear ratio is not equal to the ratio of each gear as commanded by TCM.

Operation

Enable conditions

Typical malfunction thresholds

Shift Solenoid Valve "B" Rationality Monitor

Monitoring procedure
TCM calculates the actual transmission gear ratio from input and output speed sensor signals and monitor it.
TCM detects a trouble when the actual transmission gear ratio is not equal to the ratio of each gear as commanded by TCM.

Operation