DTC P0327 [L8, LF]

id0102b1806700

DTC P0327

KS circuit low input

DETECTION CONDITION

•  The PCM monitors input signal from the KS when the engine is running. If the input voltage is below 0.01 V the PCM determines that the KS circuit has a malfunction.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA (Mode 2/Mode 12) is available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  KS connector or terminals malfunction

•  KS malfunction

•  Short to ground in wiring harness between the following terminal:

―  KS terminal A and PCM terminal 2U

―  KS terminal B and PCM terminal 2V

•  PCM connector or terminals malfunction

•  KS power supply circuit and ground circuit are shorted to each other

•  Open circuit in wiring harness between the following terminal:

―  KS terminal A and PCM terminal 2U

―  KS terminal B and PCM terminal 2V

•  PCM malfunction

DTC P0327	KS circuit low input
DETECTION CONDITION	• The PCM monitors input signal from the KS when the engine is running. If the input voltage is below 0.01 V the PCM determines that the KS circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2/Mode 12) is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• KS connector or terminals malfunction • KS malfunction • Short to ground in wiring harness between the following terminal: ― KS terminal A and PCM terminal 2U ― KS terminal B and PCM terminal 2V • PCM connector or terminals malfunction • KS power supply circuit and ground circuit are shorted to each other • Open circuit in wiring harness between the following terminal: ― KS terminal A and PCM terminal 2U ― KS terminal B and PCM terminal 2V • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED • Has the FREEZE FRAME DATA (Mode 12) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT KS CONNECTOR AND TERMINALS • Turn the ignition switch off. • Disconnect the KS connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 9.
3		No	Go to the next step.
4	INSPECT KS • Inspect the KS. (See KNOCK SENSOR (KS) INSPECTION [L8, LF]) • Is there any malfunction?	Yes	Replace the KS, then go to Step 9. (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION [L8, LF].)
4		No	Go to the next step.
5	INSPECT KS CIRCUIT FOR SHORT TO GROUND • KS connector is disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― KS terminal A ― KS terminal B • Is there continuity?	Yes	If the short to ground circuit could be detected: • Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: • Replace the PCM (short to ground in PCM internal circuit). (See PCM REMOVAL/INSTALLATION [L8, LF].) Go to Step 9.
5		No	Go to the next step.
6	INSPECT PCM CONNECTOR AND TERMINALS • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 9.
6		No	Go to the next step.
7	VERIFY KS POWER SUPPLY AND GROUND CIRCUIT FOR SHORT TO EACH OTHER • KS and PCM connectors are disconnected. • Inspect for continuity between KS terminals A and B (wiring harness-side). • Is there continuity?	Yes	Repair or replace the suspected wiring harness, then go to Step 9.
7		No	Go to the next step.
8	INSPECT KS CIRCUIT FOR OPEN CIRCUIT • KS and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― KS terminal A and PCM terminal 2U ― KS terminal B and PCM terminal 2V • Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L8, LF].) • Start the engine and warm it up completely. • Perform the KOEO/KOER self test. (See KOEO/KOER SELF TEST [L8, LF].) • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L8, LF].)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L8, LF].) • Are any DTCs present?	Yes	Go to the applicable DTC troubleshooting. (See DTC TABLE [L8, LF].)
10		No	DTC troubleshooting completed.