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Diagnostic tests 2026 firmware

Check ANC A2B Bus Connection

Coriander/tasks/TEST-BASH_SPK_X_A2B-ANC-CHECK

Model S / X (2021+)

What this task does

Check that the ANC A2B Bus that connects all the ANC microphones, accelerometers are working

Vehicle & firmware coverage

Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.

Model S / X (2021+) AMD · Firmware 2026.20.6.1
Vehicle coverage
2021+ Model S, 2021+ Model X
Supported connection
Local connection
Vehicle state
Stationary · Drive; Stationary · Neutral; Stationary · Parked
Gateway diagnostic level
No specific level listed

Task inputs (3)

timeout

timeout · Int

Firmware default: 45

A2B A

test_a2b_a · Bool

Test Main A2B Bus

Firmware default: false

A2B B

test_a2b_b · Bool

Test Active Noise Cancellation A2B Bus

Firmware default: true

Related service tasks

Browse all tasks →
Diagnostic tests

Check A2B Bus Connection

Check that the main A2B Bus that connects all the telephony microphones, and speakers are working

TEST-BASH_SPK_X_A2B-CHECK

Model S / X (2021+)
Diagnostic tests

Check MCU and PWS Speaker Connections

Check the electrical connection between the MCU speakers and check PWS speaker

TEST-BASH_SPK_X_MCU-PWS-CHECK

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

Check MCU Speaker Connections

Tests the electrical connection between the Media Control Unit (MCU) and speakers.

TEST-BASH_SPK_X_MCU-CHECK

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