Toyota Tundra (2015 year). Manual — part 1156
3.
INSPECT ECM
(a) Disconnect the knock sensor connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
a5-1 - a5-2
Ignition switch ON
4.5 to 5.5 V
a6-1 - a6-2
Ignition switch ON
4.5 to 5.5 V
a3-1 - a3-2
Ignition switch ON
4.5 to 5.5 V
a4-1 - a4-2
Ignition switch ON
4.5 to 5.5 V
NG
REPLACE ECM
OK
CHECK FOR INTERMITTENT PROBLEMS
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0327,P0328,...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000TCW0ZQX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0335,P0337-P0339; Crankshaft Position Sensor "A"
Circuit; 2015 MY Tundra [08/2014 - ]
DTC
P0335
Crankshaft Position Sensor "A" Circuit
DTC
P0337
Crankshaft Position Sensor "A" Circuit Low Input
DTC
P0338
Crankshaft Position Sensor "A" Circuit High Input
DTC
P0339
Crankshaft Position Sensor "A" Circuit Intermittent
DESCRIPTION
cylinders, and uses the NE signal to detect the crankshaft position and engine rpm.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0335
Either condition is met:
No crankshaft position (CKP) sensor signal to ECM
while cranking (1 trip detection logic)
No crankshaft position (CKP) sensor signal to ECM
Open or short in crankshaft
position (CKP) sensor circuit
Crankshaft position (CKP)
sensor
Crankshaft position (CKP)
sensor plate
ECM
P0337
Open or short in CKP sensor
circuit
CKP sensor
CKP sensor plate
ECM
P0338
Open or short in CKP sensor
circuit
CKP sensor
CKP sensor plate
ECM
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0335,P0337-...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0339
Under conditions (a), (b) and (c), no CKP sensor signal to
ECM for 0.05 seconds or more (1 trip detection logic):
(a) Engine speed 1000 rpm or more
(b) Starter signal OFF
(c) 3 seconds or more have elapsed since starter signal
switched from ON to OFF
Open or short in CKP sensor
circuit
CKP sensor
CKP sensor plate
ECM
Reference: Inspection using an oscilloscope.
Standard:
TESTER CONNECTION
TOOL SETTING
CONDITION
SPECIFIED CONDITION
D74-110 (NE+) - D74-111
(NE-)
5 V/DIV., 20
msec./DIV.
Cranking or
idling
The correct waveform is as
shown
D74-90 (G2) - D74-89 (G2-)
5 V/DIV., 20
msec./DIV.
Cranking or
idling
The correct waveform is as
shown
HINT:
G2 is the camshaft position sensor signal, and NE is the crankshaft position sensor signal.
MONITOR DESCRIPTION
If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this
stores a DTC.
MONITOR STRATEGY
Related DTCs
P0335: Crankshaft position sensor range check/rationality
P0337: Crankshaft position sensor check (Low voltage)
P0338: Crankshaft position sensor check (High voltage)
Required sensors/Components (Main)
Crankshaft Position (CKP) sensor
Required sensors/Components (Related)
Camshaft position sensor
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0335,P0337-...
Duration
P0335: 4.7 seconds
P0337, P0338: 4 seconds
MIL operation
Immediate
TYPICAL ENABLING CONDITIONS
ALL
Monitor runs whenever following DTCs not present
None
P0335: Crankshaft Position Sensor Range Check
Case 1
Engine speed (Top dead center)
450 rpm or more
Engine speed (30°CA)
450 rpm or more
Starter
OFF
Time after starter turned from ON to OFF
3 seconds or more
CKP sensor voltage
0.3 to 4.7 V
Case 2
Starter
ON
Minimum battery voltage while starter ON
Below 11 V
CKP sensor voltage
0.3 to 4.7 V
P0337, P0338 Crankshaft Position Sensor Range Check (Low Voltage, High Voltage)
Battery voltage
8 V or higher
Engine switch
ON
Starter
OFF
TYPICAL MALFUNCTION THRESHOLDS
P0335 Crankshaft Position Sensor Range Check
Engine speed signal
No signal
P0337 Crankshaft Position Sensor Range Check (Low Voltage)
CKP sensor voltage
Less than 0.3 V
P0338 Crankshaft Position Sensor Range Check (High Voltage)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0335,P0337-...
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