Code 0212

COMPONENT DESCRIPTION
The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.
* Freeze frame data is not stored in the ECM for the knock sensor. The MIL will not light for knock sensor malfunction.




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values, and are measured between each terminal and 128 (ECM ground).




ON BOARD DIAGNOSIS LOGIC




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

NOTE: Before performing the following procedure, confirm that battery voltage is more than 10 V.

With Consult
1. Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.
2. Start engine and run it for at least 5 seconds at idle speed.
3. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

OR

With Generic Scan Tools
1. Start engine and run it for at least 5 seconds at idle speed.
2. Select "MODE with GST.
3. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

OR

Without Scan Tools
1. Start engine and run it for at least 5 seconds at idle speed.
2. Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3. Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
4. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".







WIRING DIAGRAM




DIAGNOSTIC PROCEDURE




COMPONENT INSPECTION
1. Disconnect knock sensor harness connector.
2. Check resistance between terminal 02 and ground.
Approximately 500 - 620 k ohms [at 25 °C (77 °F)]
- It is necessary to use an ohmmeter which can measure more than 10 M ohms.

CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use a new one.