Front Camera Module Communication Stop Mode [09/2022 - 11/2022]: Procedure

WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

Disconnect the cable from the negative (-) battery terminal.
Disconnect the T21 forward recognition camera connector.

Measure the resistance according to the value(s) in the table below.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of wire harness connector (to Forward Recognition Camera)

Standard Resistance

Tester Connection	Condition	Specified Condition
T21-13 (GND) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

Reconnect the cable to the negative (-) battery terminal.

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Condition	Specified Condition
T21-16 (IGB) - Body ground	Ignition switch ON	11 to 14 V

Result

Result
OK
NG

Result:

REPLACE FORWARD RECOGNITION CAMERA

Refer to REMOVAL [09/2022 - 11/2022]

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)