P0332

CIRCUIT DESCRIPTION
The knock sensor (KS) diagnostic circuitry is contained within the powertrain control module (PCM). The KS produces an AC voltage at all engine speeds and at loads. The PCM adjusts spark timing that is based on the amplitude and on the frequency of the KS signal. The PCM uses the KS signal in order to calculate the average voltage. Then the PCM assigns a voltage value. The PCM inspects the KS and related wiring by comparing the actual knock signal to the assigned voltage range. A normal KS signal should stay outside the assigned voltage range. This diagnostic trouble code (DTC) will set if the KS signal is within the assigned voltage range, or if the KS signal is not present. DTC P0327 refers to the bank 1 KS and diagnostic trouble code (DTC) P0332 refers to bank 2 KS.

CONDITIONS FOR RUNNING THE DTC
^ DTCs P0101, P0102, P0103, P0116, P0117, P0118, P0121, P0122, P0123, P0125, P0128, P0336, P0341, P0502, P0503, P1114, P1115, P1121, P1122, or P1336 are not set.
^ The engine speed is between 1,000-2,500 RPM.
^ The engine has been running for a minimum of 30 seconds.
^ The throttle angle is more than 10 percent.
^ The engine load is more than 40 percent.
^ The engine coolant temperature (ECT) is more than 60°C (140°F).
^ The maximum spark retard is less than 15 degrees.
^ The system voltage is more than 9 volts.

CONDITIONS FOR SETTING THE DTC
^ The PCM detects a KS signal voltage within the predetermined average voltage range for at least 10 seconds.
^ The engine run time is more than 30 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
^ The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records.
If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
^ A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
^ Clear the MIL and the DTC with a scan tool.

TEST DESCRIPTION

Steps 1-3:

Steps 4-12:

The number below refers to the step number on the diagnostic table.
3. This step ensures that the malfunction is present.