Knock Sensors

Knock Sensors

This Document will describe how to uninstall and test your knock sensors for proper operation. They are a very important part of the engine management system and if found to be faulty, the engine management will put the engine in a safe running made known as a limp mode. This is done by the engine control unit in order to protect the engine from harm such as burning of valves and things like that.

Lexus V8 1UZ-FE Intake Top Removal

How to check knock sensors on a Lexus V8 1UZ-FE engine.

1. REMOVE AIR INTAKE CHAMBER ASSEMBLY.

Lexus V8 Knock Sensors

Getting ready to check knock sensors on a Lexus V8

2. REMOVE INTAKE MANIFOLD ASSEMBLY.

3. REMOVE THE SENSORS.

    • Disconnect the knock sensor connectors.
Lexus V8 Knock Sensors

Removing Lexus V8 Knock Sensors to test for faults

  • Using SST (09816-30010), remove the 2 knock sensors.

4. INSPECT THE SENSORS.

V8 Lexus Knock Sensor

Lexus V8 Knock Sensor Resistance Check.

  • Using an ohmmeter, check that there is no continuity between terminal and body.
  • If there is continuity, replace the sensor.

5. REINSTALL THE SENSOR.

Lexus V8 Knock Sensor Install

Lexus V8 Knock Sensor Install

  • Using SST (09816-30010), install the 2 sensors.

Torque: 44 Nm (33 ft.lb)

css.php
Visit Us On FacebookVisit Us On TwitterVisit Us On Google PlusVisit Us On YoutubeVisit Us On LinkedinVisit Us On Pinterest