DIAGNOSTIC TROUBLE CODE INDEX - DTC: ADAPTIVE SPEED CONTROL MODULE (ASCM

Friday, October 8, 2021
by Oliveston Ltd

GENERAL INFORMATION

DIAGNOSTIC TROUBLE CODE INDEX - DTC: ADAPTIVE SPEED CONTROL MODULE (ASCM) (G1566095)

DESCRIPTION AND OPERATION
 
 
ADAPTIVE SPEED CONTROL MODULE (ASCM)
CAUTION:

Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.

NOTES:

  • Guided Diagnostics must be followed and the repair advised by the process completed. Failure to do so may result in the rejection of any warranty claim made.

  • If a control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component.

  • Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

  • When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with an up-to-date calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into account.

  • Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

  • Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.

  • If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.

  • Check JLR claims submission system for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and carry out the recommendations as required.

The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Adaptive Speed Control Module (ASCM). For additional diagnosis and testing information, refer to the relevant Diagnosis and Testing section in the workshop manual. For additional information, refer to:

Speed Control (310-03A Speed Control - TDV6 3.0L Diesel, Diagnosis and Testing),
Speed Control (310-03B Speed Control - V6 S/C 3.0L Petrol, Diagnosis and Testing),
Speed Control (310-03C Speed Control - V8 S/C 5.0L Petrol, Diagnosis and Testing).

 

DTC DESCRIPTION POSSIBLE CAUSES ACTION
B1A84-81 Car Configuration Data - Invalid serial data received
  • Car configuration file mismatch with vehicle specification
  • Using the manufacturer approved diagnostic system, check and up-date the car configuration file as necessary
C1A67-54 Forward Looking Sensor - Missing calibration
  • The adaptive speed control module may be horizontally misaligned
  • Investigate for signs of mild impact damage around the adaptive speed control module and mounting bracket. Rectify as necessary. Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, refer to the relevant section of the workshop manual and adjust the adaptive speed control module alignment
C1A67-87 Forward Looking Sensor - Missing message
  • Adaptive speed control module internal failure
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
C1A67-96 Forward Looking Sensor - Component internal failure
  • Adaptive speed control module internal failure
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
C1A67-97 Forward Looking Sensor - Component or system operation obstructed or blocked
NOTE:

Adaptive cruise control is disabled and instrument pack displays warning message "radar sensor blocked"

  • Adaptive speed control module obstructed by snow, heavy rain or paint protection covering
  • The adaptive speed control module misaligned
  • Check and clear any obstructions from the sensor. This DTC will be cleared automatically when environmental conditions allow
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, refer to the relevant section of the workshop manual and adjust the adaptive speed control module alignment
C1A67-98 Forward Looking Sensor - Component or system over temperature
  • Adaptive speed control module over temperature
NOTE:

This DTC may be set by environmental conditions and will clear automatically when conditions allow

  • Allow the vehicle to cool. Using the manufacturer approved diagnostic system, clear the DTCs and retest
P174E-29 Output Shaft Speed / ABS Wheel Speed Correlation - Signal invalid
  • Invalid data from the anti-lock brake system control module
    • Road speed signal
  • Using the manufacturer approved diagnostic system, check the anti-lock brake system control module for related DTCs and refer to the relevant DTC index
U0001-82 High Speed CAN Communication Bus - Alive/sequence counter incorrect / not updated
  • Invalid data received from another control module via the high speed CAN bus (powertrain)
  • Using the manufacturer approved diagnostic system, check the snapshot data to determine the invalid data source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
U0001-87 High Speed CAN Communication Bus - Missing message
  • Missing message from another control module via the high speed CAN bus (powertrain)
  • Using the manufacturer approved diagnostic system, check the snapshot data to determine the missing message source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
U0001-88 High Speed CAN Communication Bus - Bus off
  • High speed CAN bus (powertrain) circuit short circuit to ground, short circuit to power, open circuit, high resistance
  • Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance
U0300-00 Internal Control Module Software Incompatibility - No sub type information
  • Car configuration file mismatch with vehicle specification
  • Incorrect adaptive speed control module installed
  • Using the manufacturer approved diagnostic system, check and up-date the car configuration file as necessary
  • Install a new adaptive speed control module as necessary
U0300-55 Internal Control Module Software Incompatibility - Not configured
  • Car configuration file mismatch with vehicle specification
  • Using the manufacturer approved diagnostic system, check and up-date the car configuration file as necessary
U0305-4A Software Incompatibility with Cruise Control Module - Incorrect component installed
  • Incorrect adaptive speed control module installed
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
U0401-00 Invalid Data Received From ECM/PCM - No sub type information
  • The engine control module did not respond correctly to an adaptive speed control module request
    • Speed control cancel
    • Automatic brake cancel
  • Using the manufacturer approved diagnostic system, check the engine control module for related DTCs and refer to the relevant DTC index
U0401-67 Invalid Data Received From ECM/PCM - Signal incorrect after event
  • The engine control module did not respond correctly to an adaptive speed control module request
    • Resume speed control
  • Using the manufacturer approved diagnostic system, check the engine control module for related DTCs and refer to the relevant DTC index
U0401-81 Invalid Data Received From ECM/PCM - Invalid serial data received
  • The engine control module has inhibited adaptive speed control operation
  • Using the manufacturer approved diagnostic system, check the engine control module for related DTCs and refer to the relevant DTC index
U0415-53 Invalid Data Received From Anti-Lock Brake System (ABS) Control Module - Deactivated
  • Adaptive speed control operation is disabled due to an anti-lock brake system fault
  • Using the manufacturer approved diagnostic system, check the anti-lock brake system control module for related DTCs and refer to the relevant DTC index
U0415-81 Invalid Data Received From Anti-Lock Brake System Control Module - Invalid serial data received
  • The anti-lock brake system control module has inhibited adaptive speed control operation
  • Using the manufacturer approved diagnostic system, check the anti-lock brake system control module for related DTCs and refer to the relevant DTC index
U0417-67 Invalid Data Received From Park Brake Control Module - Signal incorrect after event
  • The electric park brake control module did not respond correctly to an adaptive speed control module request
    • Electric park brake apply
  • Using the manufacturer approved diagnostic system, check the electric park brake control module for related DTCs and refer to the relevant DTC index
U0417-81 Invalid Data Received From Park Brake Control Module - Invalid serial data received
  • The electric park brake control module has inhibited adaptive speed control operation
  • Using the manufacturer approved diagnostic system, check the electric park brake control module for related DTCs and refer to the relevant DTC index
U0418-68 Invalid Data Received From Brake System Control Module - Event information
  • The anti-lock brake system control module has inhibited intelligent emergency braking / advanced emergency brake assist
  • Using the manufacturer approved diagnostic system, check the anti-lock brake system control module for related DTCs and refer to the relevant DTC index
U0421-81 Invalid Data Received from Suspension Control Module A - Invalid serial data received
  • The integrated suspension control module has inhibited adaptive speed control operation
  • Using the manufacturer approved diagnostic system, check the integrated suspension control module for related DTCs and refer to the relevant DTC index
U0423-81 Invalid Data Received from Instrument Panel Cluster Control Module - Invalid serial data received
  • The instrument cluster has inhibited adaptive speed control operation
  • Using the manufacturer approved diagnostic system, check the instrument cluster for related DTCs and refer to the relevant DTC index
U0428-81 Invalid Data Received From Steering Angle Sensor Module - Invalid serial data received
  • Missing/invalid data from the steering angle sensor module
  • Using the manufacturer approved diagnostic system, check the steering angle sensor module for related DTCs and refer to the relevant DTC index
U1A00-88 Private Communication Network - Bus off
  • Adaptive speed control module internal failure
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
U1A14-49 CAN Initialisation Failure - Internal electronic failure
  • High speed CAN bus (powertrain) circuit short circuit to ground, short circuit to power, open circuit, high resistance
  • Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance
U1A4B-16 Control Module Processor B - Circuit voltage below threshold
  • Adaptive speed control module power or ground circuit open circuit, high resistance
  • Battery/charging system fault
  • Using the manufacturer approved diagnostic system, check datalogger signal - ECU Power Supply Voltage (0xD112). Refer to the electrical circuit diagrams and check the adaptive speed control module power and ground circuits for open circuit, high resistance
  • Refer to the relevant section of the workshop manual and test the battery and charging system
U2101-00 Control Module Configuration Incompatible - No sub type information
  • Car configuration file mismatch with vehicle specification
  • Using the manufacturer approved diagnostic system, check and up-date the car configuration file as necessary
U2107-00 Collision Mitigation By Braking - No sub type information
  • Intelligent emergency braking system activation has been recorded. Vehicle has been involved in a collision
NOTE:

This DTC is for information only

  • If this DTC is present without any vehicle collision damage, contact dealer technical support
U3000-41 Control Module - General checksum failure
  • Adaptive speed control module internal failure
    • Micro controller error
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
U3000-42 Control Module - General memory failure
  • Adaptive speed control module internal failure
    • Internal memory test error
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
U3000-44 Control Module - Data memory failure
  • Adaptive speed control module internal failure
    • Internal memory error
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
U3000-49 Control Module - Internal electronic failure
  • Adaptive speed control module internal failure
    • Internal clock error
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new adaptive speed control module
U3000-63 Control Module - Circuit/component protection time-out
  • Adaptive speed control module internal failure
    • Internal protection has been activated
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, contact dealer technical support
U3000-96 Control Module - Component internal failure
  • Adaptive speed control module internal failure
    • XCM_PLL_Lock_Fault
  • Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, contact dealer technical support
U3003-16 Battery Voltage - Circuit voltage below threshold
  • Adaptive speed control module power or ground circuit open circuit, high resistance
  • Battery/charging system fault
  • Using the manufacturer approved diagnostic system, check datalogger signal - ECU Power Supply Voltage (0xD112). Refer to the electrical circuit diagrams and check the adaptive speed control module power and ground circuits for open circuit, high resistance
  • Refer to the relevant section of the workshop manual and test the battery and charging system
U3003-17 Battery Voltage - Circuit voltage above threshold
  • Battery/charging system fault
  • Using the manufacturer approved diagnostic system, check datalogger signal - ECU Power Supply Voltage (0xD112). Refer to the relevant section of the workshop manual and test the battery and charging system
U3003-62 Battery Voltage - Signal compare failure
  • Mismatch between the voltage at the adaptive speed control module and the voltage value broadcast on the CAN bus
  • Using the manufacturer approved diagnostic system, check datalogger signal - ECU Power Supply Voltage (0xD112) - and compare it to battery voltage