#
KNOCK SENSOR INSPECTION [L3]

BME014018920W01

  Note

  • Perform the following test only when directed.

## Resistance Inspection

1. Turn the ignition switch to LOCK.

2. Disconnect the knock sensor connector.

3. Measure the resistance between the knock sensor terminals A and B using an ohmmeter.

  • If not as specified, replace the knock sensor.
  • If the knock sensor is okay, but PID value is out of specification, perform the "Circuit Open/Short Inspection".

Specification

  Approx. 4.87 megohms

## Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [L3].)

2. Inspect the following wiring harnesses for open or short. (Continuity check)

### Open circuit

  • If there is no continuity, the circuit is open. Repair or replace the harness.
  - Knock sensor terminal A (harness-side) and PCM terminal 2S (harness-side)
  - Knock sensor terminal B (harness-side) and PCM terminal 2P (harness-side)

### Short circuit

  • If there is continuity, the circuit is shorted. Repair or replace the harness.
  - Knock sensor terminal A (harness-side) and power supply
  - Knock sensor terminal A (harness-side) and body GND
  - Knock sensor terminal B (harness-side) and power supply
  - Knock sensor terminal B (harness-side) and body GND