P0332

DTC P0332

CIRCUIT DESCRIPTION
The knock sensor (KS) system enables the powertrain control module (PCM) to control the ignition timing for the best possible performance while protecting the engine from potentially damaging levels of detonation. The PCM monitors 2 sensors. Each KS produces an AC signal that varies at all engine speeds and loads. The PCM makes adjustments to the spark timing based on the amplitude and frequency of the KS signal. The PCM receives the KS signal through a signal circuit. The KS ground is supplied by the engine block through the sensor housing. The PCM uses the KS signal to calculate an average voltage range. The PCM inspects the KS and the related wiring by comparing the actual knock signal to the assigned voltage range. If the KS system is operating correctly, the PCM should monitor the KS voltage varying above and below the predetermined average voltage. If the KS signal is within the assigned voltage range, or if the KS signal is not present, a DTC will set. DTC P0327 refers to the bank 1 KS and DTC P0332 refers to the bank 2 KS.

CONDITIONS FOR RUNNING THE DTC
- DTCs P0068, P0101, P0102, P0103, P0116, P0117, P0118, P0120, P0125, P0128, P0220, P0336, P0341, P0502, P0503, P1114, P1115, P1125, P1516, P1518, P2101, P2107, P2108, P2119, P2120, P2125, P2135, P2138 are not set.
- The engine speed is between 1,000-2,500 RPM.
- 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 11 volts.
- The engine run time is more than 30 seconds.

CONDITIONS FOR SETTING THE DTC
The PCM detects a KS signal voltage within the predetermined average voltage range for at least 10 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.

DIAGNOSTIC AIDS
- Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
- Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. The KS should be free of thread sealant. The KS mounting surface should be free of burrs, casting flash, and foreign material.
- For an intermittent condition, refer to Intermittent Conditions. Diagnostic Strategies

TEST

Steps 1-7:

Steps 8-14: