CIRCUIT OPERATION
- The left bank knock sensor sends a signal voltage to the ECM terminal K/S.
- The ground terminal is grounded with ECM terminal K/SE.
TECHNICAL DESCRIPTION
- The left bank knock sensor converts the vibration of the cylinder block into a voltage and outputs it.
- The ECM checks whether the voltage is within a specified range.
DESCRIPTIONS OF MONITOR METHODS
- Left bank knock sensor output voltage is out of specified range.
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
Sensor (The sensor below is determined to be normal)
Check Condition
- 2 seconds or more have passed since the engine starting sequence was completed.
Judgment Criterion
- Left bank knock sensor output voltage has continued to be higher than 2.3 volts for 2 seconds.
FAIL-SAFE AND BACKUP FUNCTION
- Fix the ignition timing with an allowance against knock.
FAIL-SAFE AND BACKUP FUNCTION
- Fix the ignition timing with an allowance against knock.
OBD-II DRIVE CYCLE PATTERN
- Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 22 .
TROUBLESHOOTING HINTS (The most likely causes for this code to be stored are: )
- Shorted left bank knock sensor circuit or connector damage.
- ECM failed.