Tesla service tasks.

Self-tests

Homelink Test

Tests Local Interconnect Network (LIN) connections to the HomeLink Electronic Control Unit (ECU). This routine takes a few seconds.

TEST-SELF_VCFRONT_X_HOMELINK

Model 3 / Y Model S / X (2021+)

Self-tests

Horn Connection Test

Checks whether the horn is properly installed and connected.

TEST-SELF_VCFRONT_X_HORN

Model 3 / Y Model S / X (2021+)

Service procedures

HV Battery Superdischarge

Discharges the High Voltage (HV) Battery using a compatible V3 Supercharger.

PROC_HV_X_SUPERDISCHARGE

Model 3 / Y Model S / X (2021+)

Self-tests

HV Pack Hot Seal Test Results

Requests the results from the HV Pack Hot Seal Test Routine and returns successul if the routine ran to completion.

TEST-SELF_VCFRONT_X_THERMAL-HV-PACK-HOT-SEAL-RESULTS

Model S / X (2021+)

Self-tests

HV Pack Hot Seal Test Start

Starts the HV Pack Hot Seal Test Routine. The routine will run for up to 50 minutes

TEST-SELF_VCFRONT_X_THERMAL-HV-PACK-HOT-SEAL-START

Model S / X (2021+)

Self-tests

HV Pack Hot Seal Test Stop

Stops the HV Pack Hot Seal Test Routine. The routine will run for up to 50 minutes

TEST-SELF_VCFRONT_X_THERMAL-HV-PACK-HOT-SEAL-STOP

Model S / X (2021+)

Self-tests

HVAC Blower Connectivity Self-Test

Tests the connectivity of the HVAC blower motor to the right vehicle controller (VCRIGHT) ECU.

TEST-SELF_VCRIGHT_X_HVAC-BLOWER

Model S / X (2021+)

Self-tests

HVAC Blower Test

Tests for power, connection, and communication of the Heating, Ventilation and Air Conditioning (HVAC) blower controlled by the Left Vehicle Controller (VCLEFT).

TEST-SELF_VCLEFT_X_HVAC-BLOWER

Model 3 / Y Model S / X (2021+)

Self-tests

HVAC Case Actuator Test

Tests HVAC case door actuator functionality and returns a pass / fail result. This is the same routine used by Tesla in the manufacturing environment to certify HVAC case actuators are performing to specification.

TEST-SELF_VCRIGHT_X_HVAC-CASE-ACTUATORS

Model S / X (2021+)

Self-tests

HVAC Case Test

This routine tests the different actuators inside the HVAC case and certifies that they are within the design specs and action range

TEST-SELF_VCRIGHT_X_HVAC-CASE-ACTUATORS

Model 3 / Y

Self-tests

HVAC Compressor Ping Test

Tests for power, connection, and communication of the Heating, Ventilation and Air Conditioning (HVAC) compressor controlled by the Front Vehicle Controller (VCFRONT2).

TEST-SELF_VCFRONT2_X_HVAC-COMPRESSOR-PING

Model 3 / Y

Self-tests

HVAC Compressor Ping Test

Tests for power, connection, and communication of the Heating, Ventilation and Air Conditioning (HVAC) compressor controlled by the Front Vehicle Controller (VCFRONT).

TEST-SELF_VCFRONT_X_HVAC-COMPRESSOR-PING

Model 3 / Y Model S / X (2021+)

Self-tests

HVAC Left Lateral Vanes Test

HVAC Left Lateral Vanes Test

TEST-SELF_VCRIGHT_L_HVAC-VANE-ACTUATOR

Model 3 / Y

Service procedures

HVAC Refrigerant Distribution

Runs the HVAC Refrigerant Distribution task.

PROC_VCRIGHT_X_THERMAL-HVAC-REFRIGERANT-DISTRIBUTION

Model 3 / Y Model S / X (2021+)

Service procedures

HVAC Refrigerant Distribution - Start

Starts the HVAC Refrigerant Distribution task.

PROC_VCRIGHT_X_THERMAL-HVAC-REFRIGERANT-DISTRIBUTION-START

Model 3 / Y Model S / X (2021+)

Service procedures

HVAC Refrigerant Distribution - Stop

Stops the HVAC Refrigerant Distribution task.

PROC_VCRIGHT_X_THERMAL-HVAC-REFRIGERANT-DISTRIBUTION-STOP

Model 3 / Y Model S / X (2021+)

Self-tests

HVAC Right Lateral Vanes Test

HVAC Right Lateral Vanes Test

TEST-SELF_VCRIGHT_R_HVAC-VANE-ACTUATOR

Model 3 / Y

Self-tests

HVAC System Performance Test

Tests the cabin HVAC operation (cabin heating and cooling) and returns pass or fail.

TEST-SELF_VCFRONT2_X_HVAC-PERFORMANCE

Model 3 / Y

Self-tests

HVAC System Performance Test

This routine tests the cabin HVAC operation (cabin heating and cooling) and returns pass or fail. This is the same routine used by Tesla factory EOL to certify the cabin HVAC is performing to specification.

TEST-SELF_VCRIGHT_X_HVAC-PERFORMANCE

Model 3 / Y Model S / X (2021+)

Service procedures

HVBMS - Clear Isolation Counters

This routine clears the High Voltage Battery Management System (HVBMS) isolation counters, which clears BMS_a027_SW_Repeated_Isolation_Failure_In_Drive and BMS_a172_SW_Isolation_Failure_In_Drive_Warning alerts. Execute this routine after repairing any isolation issue on the vehicle's High Voltage (HV) system. The HVBMS isolation counters latch the alerts BMS_a027 and BMS_a172 when reaching a certain count threshold.

PROC_HVBMS_X_RESET-ISOLATION-COUNTERS

Model 3 / Y Model S / X (2021+)

Self-tests

HVBMS BMB and VSH Connection Test

This routine checks the HVBMS connections to the Battery Monitoring Board (BMB) and the Voltage Sense Harness (VSH).

TEST-SELF_HVBMS_X_BMB-COMMS-VSH

Model 3 / Y Model S / X (2021+)

Communication checks

HVBMS CAN Communication Test

This routine will test if the High Voltage Battery Management System (HVBMS) is communicating over CAN to the Gateway.

PING-TP_HVBMS

Model 3 / Y Model S / X (2021+)

Self-tests

HVBMS HVS and HVI CAN Communication Test

This routine will test if the High Voltage Battery Management System (HVBMS) is able to communicate over HVS and HVI CAN bus'.

TEST-SELF_HVBMS_X_CAN-COMMS

Model 3 / Y Model S / X (2021+)

Diagnostic tests

HVBMS read HVC PN

The test reads the High Voltage Contactor (HVC) part number and reports the part number to High Voltage Battery Management System (HVBMS).

TEST_HVBMS_X_READ-HVC-PN

Model 3 / Y Model S / X (2021+)