DTC P0327, P0328; Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) [12/2012 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Warm up the engine.
5. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Knock Feedback Value.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Knock Feedback Value

6. Read the value while driving the vehicle.

   OK

   The value changes.

   HINT: 

   Malfunction does not occur	Knock Feedback Value changes
   Malfunctions occur	Knock Feedback Value does not change

   The Knock Feedback Value change can be confirmed by running the engine with a high load, for example, by activating the air conditioning system and racing the engine.

Result: 

OK 

CHECK FOR INTERMITTENT PROBLEMS:  CHECK FOR INTERMITTENT PROBLEMS [12/2012 - ] 

Result: 

NG 

See step  2

1. Disconnect the knock control sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   X1-2 (KNK1) - X1-1 (EKNK)	Ignition switch ON	4.5 to 5.5 V

Result: 

NG 

See step  4

Result: 

OK 

See step  3

1. Inspect the knock control sensor.

   Refer to INSPECTION [12/2012 - ]

   HINT: 

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

   Refer to INITIALIZATION [12/2012 - ]

Result: 

OK 

REPLACE ECM:  REMOVAL [12/2012 - ] 

Result: 

NG 

REPLACE KNOCK CONTROL SENSOR:  REMOVAL [12/2012 - ] 

1. Disconnect the knock control sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   X1-2 (KNK1) - B77-123 (KNK1)	Always	Below 1 Ω
   X1-1 (EKNK) - B77-124 (EKNK)	Always	Below 1 Ω
   X1-2 (KNK1) or B77-123 (KNK1) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE ECM:  REMOVAL [12/2012 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR