Typical Malfunction Thresholds

Stop light switch status

Stuck ON

WIRING DIAGRAM

HINT:

Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

READ VALUE OF INTELLIGENT TESTER (STOP LIGHT SW)

(a) Connect an intelligent tester to the DLC3.

(b) Turn the ignition switch ON and turn the tester ON.

(c) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STOP LIGHT SW.

(d) Read the values displayed on the tester.

Item

Measurement Item: Range (display)

Normal Condition

STOP LIGHT SW

Stop light switch status: ON or OFF

• ON: Brake pedal is depressed

• OFF: Brake pedal is released

CHECK FOR INTERMITTENT PROBLEMS

CHECK FOR INTERMITTENT PROBLEMS

INSPECT STOP LIGHT SWITCH ASSEMBLY (See page ES-250)

REPLACE STOP LIGHT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - ECM) (See page ES-251)

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REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM

R15GG

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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