Toyota Tundra (2015 year). Manual — part 1544
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000SVT0VNX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM:
P0327,P0328,P032C,P032D,P0332,P0333,P033C,P033D; Knock Sensor 1 Circuit Low Input (Bank 1 or Single
Sensor); 2015 MY Tundra [08/2014 - ]
DTC
P0327
Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
DTC
P0328
Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
DTC
P032C
Knock Sensor 3 Circuit Low
DTC
P032D
Knock Sensor 3 Circuit High
DTC
P0332
Knock Sensor 2 Circuit Low Input (Bank 2)
DTC
P0333
Knock Sensor 2 Circuit High Input (Bank 2)
DTC
P033C
Knock Sensor 4 Circuit Low Input
DTC
P033D
Knock Sensor 4 Circuit High Input
DESCRIPTION
A flat type knock sensor (non-resonant type) has a structure that can detect vibrations between approximately
5 kHz and 15 kHz.
Knock sensors are fitted onto the engine block to detect engine knocking.
The knock sensor contains a piezoelectric element which generates a voltage when it becomes deformed.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0327
(1 trip detection logic)
Short in knock sensor (for Bank 1
Sensor 1) circuit
Knock sensor (for Bank 1 Sensor 1)
ECM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0327,P032...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0328
(1 trip detection logic)
Open in knock sensor (for Bank 1
Sensor 1) circuit
Knock sensor (for Bank 1 Sensor 1)
ECM
P0332
(1 trip detection logic)
Short in knock sensor (for Bank 2
Sensor 1) circuit
Knock sensor (for Bank 2 Sensor 1)
ECM
P0333
(1 trip detection logic)
Open in knock sensor (for Bank 2
Sensor 1) circuit
Knock sensor (for Bank 2 Sensor 1)
ECM
P032C
(1 trip detection logic)
Short in knock sensor (for Bank 1
Sensor 2) circuit
Knock sensor (for Bank 1 Sensor 2)
ECM
P032D
(1 trip detection logic)
Open in knock sensor (for Bank 1
Sensor 2) circuit
Knock sensor (for Bank 1 Sensor 2)
ECM
P033C
(1 trip detection logic)
Short in knock sensor (for Bank 2
Sensor 2) circuit
Knock sensor (for Bank 2 Sensor 2)
ECM
P033D
(1 trip detection logic)
Open in knock sensor (for Bank 2
Sensor 2) circuit
Knock sensor (for Bank 2 Sensor 2)
ECM
HINT:
When DTC P0327, P0328, P0332, P0333, P032C, P032D, P033C or P033D 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 ignition switch is turned off.
Reference: Inspection using an oscilloscope
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0327,P032...
Standard:
TESTER CONNECTION
TOOL
SETTING
CONDITION
SPECIFIED CONDITION
D74-94 (KNK1) - D74-93
(EKNK)
1 V/DIV.
1 msec./DIV.
Keep engine speed at 4000 rpm with
warm engine
The correct waveform is
as shown
D74-117 (KNK2) - D74-116
(EKN2)
1 V/DIV.
1 msec./DIV.
Keep engine speed at 4000 rpm with
warm engine
The correct waveform is
as shown
D74-96 (KNK3) - D74-95
(EKN3)
1 V/DIV.
1 msec./DIV.
Keep engine speed at 4000 rpm with
warm engine
The correct waveform is
as shown
D74-119 (KNK4) - D74-118
(EKN4)
1 V/DIV.
1 msec./DIV.
Keep engine speed at 4000 rpm with
warm engine
The correct waveform is
as shown
MONITOR DESCRIPTION
The knock sensor, located on the cylinder block, detects spark knock. When spark knock occurs, the
The ECM also senses background engine noise with the knock sensor and uses this noise to check for faults in
the sensor. If the knock sensor output voltage is outside the normal range, the ECM interprets this as a fault in
the knock sensor and stores a DTC.
MONITOR STRATEGY
Related DTCs
P0327: Knock sensor (for Bank 1 Sensor 1) open/short (Low
voltage)
P0328: Knock sensor (for Bank 1 Sensor 1) open/short (High
voltage)
P0332: Knock sensor (for Bank 2 Sensor 1) open/short (Low
voltage)
P0333: Knock sensor (for Bank 2 Sensor 1) open/short (High
voltage)
P032C: Knock sensor (for Bank 1 Sensor 2) open/short (Low
voltage)
P032D: Knock sensor (for Bank 1 Sensor 2) open/short (High
voltage)
P033C: Knock sensor (for Bank 2 Sensor 2) open/short (Low
voltage)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0327,P032...
P033D: Knock sensor (for Bank 2 Sensor 2) open/short (High
voltage)
Required Sensors/Components (Main)
Knock sensor (Bank 1, 2 Sensor 1, 2)
Required Sensors/Components
(Related)
-
Duration
1 second
MIL Operation
Immediate
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs are not stored
None
Battery voltage
10.5 V or more
Time after engine start
5 seconds or more
TYPICAL MALFUNCTION THRESHOLDS
Knock Sensor Range Check (Low voltage): P0327, P0332, P032C and P033C:
Knock sensor voltage
Less than 0.5 V
Knock Sensor Range Check (High voltage): P0328, P0333, P032D and P033D:
Knock sensor voltage
More than 4.5 V
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on.
5.
Start the engine and wait 10 seconds.
6.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
7.
Read the pending DTC.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
8.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
9.
Input the DTC: P0327, P0328, P032C, P032D, P0332, P0333, P033C or P033D.
10.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
11.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0327,P032...
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