Description and Operation

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 checked and/or the donor vehicle.

When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.

NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), 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 (DMM) accurate to three decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

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

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.

Where an 'on demand self-test' is referred to, this can be accessed via the 'DTC Monitor' tab on the manufacturers approved diagnostic system.

The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Active Safety Belt Module, for additional Diagnosis and Testing information refer to the relevant Diagnosis and Testing Section. For additional information, refer to: DIAGNOSIS AND TESTING

DTC	Description	Possible Cause	Action
U1A14-00	CAN Initialization Failure - no sub type information	Power distribution fault to control module CAN network fault	Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network. After installing a new control module, updating software or repairing a wiring harness perform an On Demand Self Test and Retract and Release Self Test using the manufacturers approved diagnostic system.
U2001-68	Reduced System Function - event information	Seat belt retractor mechanism has exceeded the design limit for the durability	NOTE: If required, it is only necessary to install a new component on the side affected by the DTC. Confirm the Safety belt retractor mechanism Confirm the Safety belt retractor mechanism has exceeded the design limit for durability by interrogating the Active Safety Belt Module. Using the manufacturer approved diagnostic system check the Dynamic Safety belt Health Status at PID5824, if the Safety belt status is confirmed as 'not healthy' (01) install a new retractor mechanism as required. If the Safety belt status is 'healthy' (00) clear the DTC and refer to DIAGNOSIS AND TESTING and perform the Retract and Release Self Test using the manufacturers approved diagnostic system. Refer to the Warranty Policy and Procedures manual if a module/component is suspect
U2101-00	Control Module Configuration Incompatible - no sub type information	The control module is not compatible with the vehicle	Check the vehicle configuration file to ensure the vehicle configuration is correct for the installed hardware. The Active Safety Belt Control Modules are handed (connector shell is different between LH and RH sides) and cannot be installed on another vehicle as they store VIN data. Using the manufacturer approved diagnostic system run the routine RID 0402h to clear self learnt data (except VIN). Cycle the ignition and the module should re-learn the correct configuration. clear the DTC and refer to DIAGNOSIS AND TESTING and perform the Retract and Release Self Test using the manufacturers approved diagnostic system. Refer to the Warranty Policy and Procedures manual if a module/component is suspect.
U3000-45	Control Module - program memory failure	Component internal memory failure	Install a new control module, refer to the Warranty Policy and Procedures manual if a module/component is suspect. After installing a new control module, updating software or repairing a wiring harness perform an On Demand Self Test and Retract and Release Self Test using the manufacturers approved diagnostic system
U3000-49	Control Module - internal electronic failure	Component internal electronic failure	Install a new control module, refer to the Warranty Policy and Procedures manual if a module/component is suspect. After installing a new control module, updating software or repairing a wiring harness perform an On Demand Self Test and Retract and Release Self Test using the manufacturers approved diagnostic system
U3000-4B	Control Module - over temperature	Belt retraction motor has exceeded the design operating temperature	During 'aggressive' cornering or braking the belt mechanism will operate to ensure the occupant is correctly positioned in the seat. This DTC is set when the belt retraction motor has exceeded the temperature threshold and functionality is inhibited until the motor has cooled. Allow the motor to cool and then clear the DTC. If the DTC resets refer to the Warranty Policy and Procedures manual if a module/component is suspect. After installing a new control module, updating software or repairing a wiring harness perform an On Demand Self Test and Retract and Release Self Test using the manufacturers approved diagnostic system
U3002-81	Vehicle Identification Number - invalid serial data received	Vehicle identification number not stored New module configuration routine not completed	Using the manufacturer approved diagnostic system carry out the new module configuration routine
U3003-62	Battery Voltage - signal compare failure	Power distribution fault to control module CAN network fault	This DTC is set when the control module registers a difference of more than 2 volts between the CAN reference battery voltage and the module supply voltage. Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network. After installing a new control module, updating software or repairing a wiring harness perform an On Demand Self Test and Retract and Release Self Test using the manufacturers approved diagnostic system
U3006-16	Control Module Input Power "A" - circuit voltage below threshold	Vehicle battery discharged Power distribution fault to control module causing volt drop on supply circuits Internal control module fault	This DTC is set when the measured supply voltage is below 9 volts. Refer to the battery care manual and confirm vehicle battery is fully charged and serviceable. Refer to the relevant information and check the charging system is performing correctly. Refer to the electrical circuit diagrams and check the power and ground connections to the module. If no faults are found suspect the control module, refer to the Warranty Policy and Procedures manual if a module/component is suspect
U3006-17	Control Module Input Power "A" - circuit voltage above threshold	Vehicle charging system fault Internal control module fault	This DTC is set when the measured supply voltage is above 16 volts. Refer to the battery care manual and confirm vehicle battery is fully charged and serviceable. Refer to the relevant information and check the charging system is performing correctly. Refer to the electrical circuit diagrams and check the power and ground connections to the module. If no faults are found suspect the control module, refer to the Warranty Policy and Procedures manual if a module/component is suspect
U0452-29	Invalid Data Received From Restraints Control Module - signal invalid	Supplementary Restraints System fault Restraints Control Module fault	Check the Restraints Control Module for related DTCs and refer to the relevant DTC index
U0452-31	Invalid Data Received From Restraints Control Module - no signal	Supplementary Restraints System fault Restraints Control Module fault	Check the Restraints Control Module for related DTCs and refer to the relevant DTC index
U0415-29	Invalid Data Received From Anti-Lock Braking System (ABS) Control Module - signal invalid	Anti-Lock Braking System fault Anti-Lock Braking System control module fault	Check the Anti-Lock Braking System Control Module for related DTCs and refer to the relevant DTC index
U0415-31	Invalid Data Received From Anti-Lock Braking System (ABS) Control Module - no signal	Anti-Lock Braking System fault Anti-Lock Braking System control module fault	Check the Anti-Lock Braking System Control Module for related DTCs and refer to the relevant DTC index
U0422-29	Invalid Data Received From Body Control Module - signal invalid	Central Junction Box system fault	Check the Central Junction Box for related DTCs and refer to the relevant DTC index
U0422-31	Invalid Data Received From Body Control Module - no signal	Central Junction Box system fault	Check the Central Junction Box for related DTCs and refer to the relevant DTC index
U0423-29	Invalid Data Received From Instrument Panel Control Module - signal invalid	Instrument Panel Control Module system fault	Check the Instrument Panel Control Module for related DTCs and refer to the relevant DTC index
U0423-31	Invalid Data Received From Instrument Panel Control Module - no signal	Instrument Panel Control Module system fault	Check the Instrument Panel Control Module for related DTCs and refer to the relevant DTC index
U0001-88	High Speed CAN Communication Bus - bus off	Power distribution fault to control module CAN network fault	Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network. After installing a new control module, updating software or repairing a wiring harness perform an On Demand Self Test and Retract and Release Self Test using the manufacturers approved diagnostic system
U0104-00	Lost Communication With Cruise Control Module - no sub type information	Power distribution fault to control module CAN network fault	Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network between the Active Safety Belt Module and Speed Control Module
U0405-29	Invalid Data Received From Cruise Control Module - signal invalid	Speed control system related fault	Check the Speed Control Module for related DTCs and refer to the relevant DTC index
U0103-00	Lost Communication With Gear Shift Control Module A - no sub type information	Power distribution fault to control module CAN network fault	Refer To The Electrical Circuit Diagrams And Check The Power And Ground Connections To The Module. Using The Manufacturer Approved Diagnostic System, Complete A Can Network Integrity Test. Refer To The Electrical Circuit Diagrams And Check The Can Network Between The Active Safety Belt Module And Transmission Shift Control Module