P032515

DTC Code	DTC Name
P032515	Knock Sensor 1 Bank 1 or Single Sensor Circuit Short to Battery or Open

DESCRIPTION

Refer to DTC P032511.

Tech Tips

When DTC P032515 is stored, the ECM enters fail-safe mode. During fail-safe mode, the ignition timing is delayed to its maximum retardation. Fail-safe mode continues until the power switch is turned off.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P032515	Knock Sensor 1 Bank 1 or Single Sensor Circuit Short to Battery or Open	The knock control sensor output voltage is higher than 4.5 V for 1 second or more (1 trip detection logic).	Open or short in knock control sensor circuit Knock control sensor ECM	Comes on	DTC stored	SAE Code: P0328

Reference: Inspection using an oscilloscope.

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MONITOR DESCRIPTION

If the output voltage transmitted by the knock control sensor remains high for 1 second or more, the ECM interprets this as a malfunction in the sensor circuit, illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (Maintenance Mode).

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Start the engine and wait 5 minutes.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P032515.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

Tech Tips

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
If the judgment result is INCOMPLETE or N/A, idle the engine for 5 minutes and check the DTC judgment result again.

WIRING DIAGRAM

Refer to DTC P032511.

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CAUTION / NOTICE / HINT

Note

Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

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(Select Powertrain in Health Check and then check the time stamp data.)

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If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

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Tech Tips

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

CHECK TERMINAL VOLTAGE (POWER SOURCE OF KNOCK CONTROL SENSOR)

*a	Front view of wire harness connector (to Knock Control Sensor)

Disconnect the knock control sensor connector.
Turn the power switch on (IG).

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Condition	Specified Condition
E1-2 - E1-1	Power switch on (IG)	4.5 to 5.5 V

Result

Proceed to
OK
NG

NG

CHECK HARNESS AND CONNECTOR (KNOCK CONTROL SENSOR - ECM) Click here

OK

INSPECT KNOCK CONTROL SENSOR

Inspect the knock control sensor.

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Tech Tips

Perform "Inspection After Repair" after replacing the knock control sensor.

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Result

Proceed to
OK
NG

OK

GO TO STEP 4 Click here

NG

REPLACE KNOCK CONTROL SENSOR Click here

CHECK HARNESS AND CONNECTOR (KNOCK CONTROL SENSOR - ECM)

Disconnect the knock control sensor connector.
Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
E1-2 - C31-122 (KNK1)	Always	Below 1 Ω
E1-1 - C31-121 (EKNK)	Always	Below 1 Ω
E1-2 or C31-122 (KNK1) - Other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

CLEAR DTC

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs.

Powertrain > Engine > Clear DTCs

Turn the power switch off and wait for at least 30 seconds.

Result

Proceed to
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P032515)

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTCs are not output	A
DTC P032515 is output	B

A

CHECK FOR INTERMITTENT PROBLEMS Click here

B

REPLACE ECM Click here

SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P032515