Section 21 (Transmission Control Module (TCM) - Nag1 Automatic Transmission)

• Diagnostic Code Index
• Diagnosis And Testing
  • P0219-Engine OVERSPEED
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0501-Vehicle Speed Sensor 1 Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0562-Battery Voltage Low
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0563-Battery Voltage High
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0601-Internal Memory Checksum Invalid
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0602-Control Module Programming Error/Not Programmed
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0604-Internal Control Module Ram
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0605-Internal Control Module ROM
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0613-Internal Transmission Processor
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0614-ECM/TCM Incompatible
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0642-Sensor Reference Voltage 1 Circuit Low
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0643-Sensor Reference Voltage 1 Circuit High
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0657-Solenoid Supply Voltage Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0710-Transmission Temperature Sensor Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0712-Transmission Temperature Sensor Low
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0714-Transmission Temperature Sensor Intermittent
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0717-Input Speed Sensor 1 Circuit No Signal
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0730-Incorrect Gear Ratio
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0731-Gear Ratio Error In 1ST
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0732-Gear Ratio Error In 2ND
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0733-Gear Ratio Error In 3RD
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0734-Gear Ratio Error In 4TH
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0735-Gear Ratio Error In 5TH
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0741-Torque Converter Clutch Circuit Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0742-Torque Converter Clutch Stuck On
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0743-TCC Solenoid Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0748-Modulator Pressure Solenoid Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0752-1-2/4-5 Solenoid
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0753-1-2/4-5 Solenoid Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0757-2-3 Solenoid
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0758-2-3 Solenoid Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0762-3-4 Solenoid
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0763-3-4 Solenoid Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0778-Shift Pressure Solenoid Circuit
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P0817-Starter Disable (P/N) Circuit/Open
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1629-TCM Internal - Solenoid Supply/ Watchdog
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1631-TCM Internal- Processor Clock Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1632-TCM Internal - Test Internal Watchdog Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1633-TCM Internal - Test External Watchdog Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1634-TCM Internal- Internal Watchdog Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1636-TCM Internal- External Watchdog Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1637-TCM Internal-EEPROM Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1638-TCM Internal-Can 1 Ram Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1639-TCM Internal-Can 2 Ram Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1644-Incorrect Variant/Configuration
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1704-Input Speed Sensor 1 OVERSPEED
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1705-Input Speed Sensor 2 OVERSPEED
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P1731-Incorrect Gear Engaged
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P2638-Torque Management Feedback Signal Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P2767-Input Speed Sensor 2 Circuit No Signal
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P2783-Torque Converter Temperature Too High
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • P2784-Input Speed Sensor 1/2 Correlation
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0002-Can C Bus Off Performance
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
  • U0100-Lost Communication With ECM/Pcm
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
  • U0103-Lost Communication With Electric Gear Shift Module
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0121-Lost Communication With Anti-Lock Brake Module
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0141-Lost Communication With IPM
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0155-Lost Communication With Cluster/CCN
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0164-Lost Communication With HVAC Control Module
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0401-Implausible Data Received From ECM/Pcm
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0404-Implausible Data Received From ESM
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0414-Implausible Data Received From FDCM
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0415-Implausible Data Received From Abs
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0423-Implausible Data Received From Cluster/CCN
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0424-Implausible Data Received From HVAC Control Module
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0431-Implausible Data From FCM/TIPM
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U110B-Lost Engine Coolant Message
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1118-Lost Engine Message
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1119-Lost FCM Message
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1400-Implausible TPS Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1401-Implausible Engine Speed Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1402-Implausible Engine Temperature Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1404-Implausible Static Engine Torque Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1405-Implausible Minimum Engine Torque Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1406-Implausible Maximum Engine Torque Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1407-Implausible Engine Torque Request Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1408-Implausible Brake Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1409-Implausible Left Front Wheel Speed Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U140A-Implausible Right Front Wheel Speed Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U140B-Implausible Left Rear Wheel Speed Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U140C-Implausible Right Rear Wheel Speed Signal Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U140D-Implausible Wheel Speed Signals Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U140F-Implausible Engine Variant Data
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1410-Implausible/Missing FCM Variant Data
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1505-Implausible Message Data Length Received From FDCM
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1507-Implausible Engine Temperature Message Data Length Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1508-Implausible Message Data Length Received From ESM
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U1509-Implausible Engine Variant Message Data Length Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U150A-Implausible FCM Variant Message Data Length Received
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
• Standard Procedure
  • Nag1 Pre-Diagnostic Troubleshooting Procedure
    • Notes
    • Diagnostic Test
  • Nag1 Transmission Verification Test
    • Notes
    • Road Test Procedure
    • Diagnostic Test