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DTC P0327 [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))

BME010200100W16

DTC P0327 | Knock sensor circuit low input
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DETECTION CONDITION | • PCM monitors input signal from knock sensor when engine is running. If input voltage at PCM terminal between 81 and 3 is below 1.25 V, PCM determines that knock sensor circuit has malfunction. Diagnostic support note • This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Knock sensor malfunction • Connector or terminal malfunction • Open or short to ground circuit between knock sensor connector terminal A and PCM terminal 81 • Open or short to ground circuit between knock sensor connector terminal B and PCM terminal 3
• Short knock sensor two wires
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record FREEZE FRAME DATA on repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Information and/or on-line repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | INSPECT PCM CONNECTOR TERMINAL • Turn the ignition switch off. • Disconnect PCM connector. • Check for poor connection at terminals 81 and 3 (damaged, pulled-out pins, corrosion, etc.). • Is there any malfunction? | Yes | Repair terminal, then go to Step 8.
No | Go to the next step.
4 | INSPECT KNOCK SENSOR CIRCUITS FOR OPEN • Disconnect knock sensor connector. • Check continuity between the following circuits:

  - Knock sensor female terminal A (harness-side) and PCM terminal 81 (harness-side)
  - Knock sensor female terminal B (harness-side) and PCM terminal 3 (harness-side)

• Are there continuities?
Yes
Go to the next step.
No | Repair or replace suspected wiring harness, then go to Step 8.
5 | INSPECT KNOCK SENSOR CIRCUITS FOR SHORT TO GROUND • Check continuity between following circuits:

  - Knock sensor female terminal A (harness-side) and body ground
  - Knock sensor female terminal B (harness-side) and body ground

• Are there continuities?
Yes
Repair or replace suspected wiring harness, then go to Step 8.
No | Go to the next step.
6 | CHECK FOR SHORT CIRCUITS • Check continuity between knock sensor female terminals A and B (harness-side). • Is there continuity? | Yes | Repair or replace suspected harness, then go to Step 8.
No | Go to the next step.
7 | CHECK KNOCK SENSOR RESISTANCE • Inspect the knock sensor. • Is the knock sensor normal? | Yes | Go to the next step.
No | Replace knock sensor, then go to the next step.
8 | VERIFY TROUBLESHOOTING OF DTC P0327 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the ignition switch to the ON position (Engine off). • Clear the DTC from the memory using the WDS or equivalent. • Start engine.
• Is same DTC present?
Yes
Replace or reprogram PCM. Then go to the next step.
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [AJ].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
No | Troubleshooting completed.