MacBook Air M2 A2681 (820-02536) - Trackpad/keyboard not working

Hi,

I have a MacBook Air M2 with a non-working trackpad and keyboard. I tested it using a known-good trackpad and keyboard, but they didn’t work either. Based on this, I suspect a logic board failure.

Here are my measurements so far:

UT3A0 Output:

• TPAD_KBD_WAKE_L = 1.8V

UT320 Output:

• IPD_SYS_AWAKE_CONN = 3.28V

UT330 Output:

• IPD_MTP_FUNC_1_CONN = 3.26V

UT340 Output:

• IPD_MCU_INT_L = 3.25V

UT350 Output:

• SPI_IPD_TOUCH_CS_CONN_L = 1.25V

UT360 Output:

• SPI_IPD_MOSI_CONN = 0V
• SPI_IPD_CLK_CONN = 0V
• SPI_IPD_CLK = 0V
• SPI_IPD_MCU_CS_CONN_L = 3.28V
• SPI_IPD_MISO = 0V
• SPI_IPD_MOSI = 1.25V

UT370 Output:

• IPD_TOUCH_INT_L = 1.25V

UT380 Output:

• IPD_MCU_RESET_CONN_L = 1.8V
• IPD_TOUCH_RESET_CONN_L = 1.8V

Main Power Rails:

• PPBUS_AONSW_IPD_F = 11.95V
• PP5V_S2SW_IPD_F = 5.18V
• PP3V3_S2SW_IPD_F = 3.28V
• IPD_LID_OPEN_1V8 = 1.8V
• IPD_OCP_FLT = 0V

Note: Measurements were taken while the logic board was not installed in the top case.

Any history available?

Compare diode mode readings with good board, or reference table:

Device was water damaged at Trackpad connector, Keyboard daughter board and Audio area (Audio already fixed).