Symptom:
P0325-KNOCK SENSOR #1 CIRCUIT
When Monitored and Set Condition:
P0325-KNOCK SENSOR #1 CIRCUIT
When Monitored: With the ignition on and the engine running.
Set Condition: The Knock Sensor circuit voltage falls below a minimum value at idle or
deceleration. The minimum value is from a look-up table internal to the PCM and is based
on engine rpm. DTC also sets if sensor output goes above 5.0 volts. Two Trip Fault.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
(K42) KS SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K42) KS SIGNAL CIRCUIT SHORTED TO GROUND
(K42) KS SIGNAL CIRCUIT OPEN
(K42) KS SIGNAL CIRCUIT SHORTED TO (K45) KS RETURN CIRCUIT
(K45) KS RETURN CIRCUIT OPEN
KNOCK SENSOR
TEST ACTION APPLICABILITY
1 Ignition on, engine not running.
With the DRBIIIt, read DTCs and record the related Freeze Frame data.
Is the Good Trip displayed and equal to zero?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
2 Turn the ignition off.
Disconnect the Knock Sensor harness connector.
Measure the voltage of the (K42) KS Signal circuit in the Knock Sensor harness
connector.
Is the voltage above 2.0 volts?
All
Yes → Repair the short to voltage in the (K42) KS Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 3
122
DRIVEABILITY - NGC
To Next Page
Loading...
