DTC 55

Data Trouble Code No. 52 - Knock Sensor Signal (left)

Detecting Condition

No No. 1 Knock Sensor signal to Engine Control module for 3 crank revolutions with engine speed between 1,600 rpm and 5,200 rpm.

Trouble Area

- Open or short in No. 1 Knock Sensor circuit.
- No. 1 Knock Sensor (looseness).
- Engine Control Module.

Malfunction Indicator Lamp

Normal Mode On
Test Mode N.A.

Code 52,53 And 55 Description:

Circuit Description
Knock sensors are fitted one each to the right bank and left bank of the cylinder block to detect engine knocking. This sensor contains a piezoelectric element which generates a voltage when it becomes deformed, which occurs when the cylinder block vibrates due to knocking. If engine knocking occurs, ignition timing is retarded to suppress it.

DTC Detection Driving Pattern:

DTC Detection

Code 52,53 And 55 Diagnostic Chart:

Diagnostic Chart

Code 52,53 And 55 Circuit Diagram:

Circuit Diagram

Code 52,53 And 55 Inspection Procedure:

Code 52,53 And 55 Inspection Procedure Page 2:

Inspection Procedure