Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STOP LIGHT SWITCH OPERATION (FOR STOP LIGHT)

Check that the stop light comes on while depressing the brake pedal, and goes off when releasing the brake pedal.

STOP LIGHT SWITCH OPERATION REFERENCE

Brake pedal condition	Stop light condition
Depressed	ON
Released	OFF

NG: INSPECT STOP LIGHT SWITCH CIRCUIT

OK: Go to next step

INSPECT STOP LIGHT SWITCH OPERATION (FOR BACK-UP SIGNAL)

Turn the ignition switch off.
Disconnect the stop light switch connector.

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

Standard resistance

RESISTANCE REFERENCE CHART

Tester connection	Switch condition	Specification
3 - 4	Switch pin free (Brake pedal depressed)	10 kΩ or higher
3 - 4	Switch pin pushed in (Brake pedal released)	Below 1 Ω
1 - 2	Switch pin free (Brake pedal depressed)	Below 1 Ω
1 - 2	Switch pin pushed in (Brake pedal released)	10 kΩ or higher

NG: REPLACE STOP LIGHT SWITCH

Fig 1: Inspecting Stop Light Switch Operation

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT ECM

Reconnect the stop light switch connector.
Disconnect the ECM connector.

Fig 2: Identifying Stop Light Switch Connector And ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Turn the ignition switch to the ON position.

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

Standard voltage:

3MZ-FE

VOLTAGE CHART

Tester connection	Brake pedal condition	Specification
E4-15 (STP) - Body ground	Depressed	10 to 14 V
E4-15 (STP) - Body ground	Released	Below 1 V

2AZ-FE

VOLTAGE CHART

Tester connection	Brake pedal condition	Specification
E5-4 (STP) - Body ground	Depressed	10 to 14 V
E54 (STP) - Body ground	Released	Below 1 V

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

Standard voltage:

3MZ-FE

VOLTAGE CHART

Tester connection	Brake pedal condition	Specification
E4-16 (ST1-) - Body ground	Depressed	Below 1 V
E4-16 (ST1-) - Body ground	Released	10 to 14 V

2AZ-FE

VOLTAGE CHART

Tester connection	Brake pedal condition	Specification
E4-16 (ST1-) - Body ground	Depressed	Below 1 V
E4-16 (ST1-) - Body ground	Released	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - ECM)

OK: REPLACE ECM