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Home >> Oldsmobile >> 1998 >> Regency >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Systems Tests W/Codes >> Diagnostic Trouble Codes >> DTC P0332 - Knock Sensor Circuit Bank 2 >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK . Read and record FREEZE FRAME and/or FAIL RECORDS data for each DTC set. After performing OBD system check, go to next step.
  2. If engine knock can be heard, repair mechanical problem before proceeding with test. After repairs, operate vehicle within conditions required to set DTC. Using scan tool, select DTC, SPECIFIC function and enter this DTC. If scan tool displays DTC FAILED THIS IGN, go to step 4). If scan tool does not display DTC FAILED THIS IGN, go to next step.
  3. Turn ignition on, engine off. Read and record FAIL RECORDS data for DTC P0327. Operate vehicle within conditions noted in FAIL RECORDS data. Using scan tool, read SPECIFIC DTC. If scan tool displays that this DTC FAILED THIS IGN, go to next step. If scan tool does not display that this DTC FAILED THIS IGN, see DIAGNOSTIC AIDS.
  4. Disconnect KS No. 2 connector. Using a DVOM, check voltage between engine ground and terminal at KS. If voltage is 5 volts, go to next step. If voltage is not 5 volts, go to step 8).
  5. Connect DVOM to bank 2 KS terminal and ground. Select 2-volt AC scale on DVOM. Start and operate engine at idle. Observe DVOM. If voltage is indicated on DVOM, go to step 9). If voltage is not indicated, go to next step.
  6. Turn ignition off. With DVOM still connected between KS terminal and engine ground, tap on engine while observing DVOM. If any signal is present, go to next step. If signal is not present, go to step 9).
  7. Check KS harness connector for incorrect routing or faulty terminal connection at KS. Repair as necessary. After repairs, go to step 12). If no problem is found, go to step 10).
  8. Turn ignition off. Disconnect PCM harness connectors. Turn ignition on and check KS signal circuit between PCM and KS harness connector for open, short to voltage or short to ground. Repair as necessary. After repairs, go to step 12). If no problem is found, go to step 10).
  9. Replace KS. After replacing sensor, go to step 12).
  10. Turn ignition off. Disconnect PCM connectors. Check KS signal circuit for proper terminal connection at PCM. Repair or replace terminal as necessary. After repairs, go to step 12). If terminal is okay, go to next step.
  11. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  12. Read and record FAIL RECORDS data for DTC P0327. Operate vehicle within conditions noted in FAIL RECORDS data. Using scan tool, read SPECIFIC DTC. If scan tool displays DTC P0327 FAILED THIS IGN, return to step 2). If scan tool does not display DTC P0327 FAILED THIS IGN, repair is complete.
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