2001 TOYOTA SEQUOIA check engine

B17411
KNK1
KNK2EKN2
EKNK E7
DI±208
± DIAGNOSTICSENGINE
402 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check for open and short in harness and connector between EB4 connector and
ECM (See page IN±35).
NG Repair or replace harness or connector.
OK
3 Measure voltage between terminals KNK1 and EKNK, KNK2 and EKN2 of ECM.
PREPARATION:
(a) Disconnect the E7 ECM connector.
(b) Turn the ignition switch to ON.
CHECK:
(a) Measure the voltage between the specified ECM termi-
nals.
OK:
Standard:
Tester ConnectionSpecified Condition
KNK1 (E7±29) ± EKNK (E7±28)4.5 to 5.5 V
KNK2 (E7±21) ± EKN2 (E7±20)4.5 to 5.5 V
(b) Reconnect the ECM connector.
NG Replace ECM (See page SF±80).
OK
Check for intermittent problems
(See page DI±11).
4 Check knock sensor installation.
CHECK:
Check the knock sensor installation.
OK:
Torque: 20 NVm (204 kgfVcm, 15 ftVlbf)
NG Tighten the sensor.
OK

A23513
Male Connector
EB4
Wire Harness Side:
Front View
± DIAGNOSTICSENGINE
DI±209
403 Author: Date:
2005 SEQUOIA (RM1146U)
Replace knock sensor (See page SF±66).
5 Check knock sensor.
PREPARATION:
(a) Disconnect the EB4 connector.
CHECK:
(a) Check the resistance between the terminals of the EB4
male connector.
OK:
Standard:
Tester ConnectionSpecified Condition
EB4 male connector 3 ±4120 to 280 kW
EB4 male connector 7 ± 8120 to 280 kW
(b) Reconnect the EB4 connector.
OK Check for intermittent problems
(See page DI±11).
NG
6 Check for open and short in harness and connector between EB4 connector and
knock sensor (See page IN±35).
HINT:

If DTC P0327 or P0328 has changed to P0332 or P0333, check the knock sensor circuit on the right
bank side.

If DTC P0332 or P0333 has changed to P0327 or P0328, check the knock sensor circuit on the left
bank side.
NG Repair or replace harness or connector.
OK
Replace knock sensor.

± DIAGNOSTICSENGINE
DI±211
405 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR DESCRIPTION
If there are no signals from the crankshaft sensor even though the engine is revolving, the ECM interprets
this as a malfunction of the sensor.
MONITOR STRATEGY
Related DTCsP0335Crankshaft position sensor range check or ratio-
nality
Rid / tMain sensors/componentsCrankshaft position sensorRequired sensors/componentsRelated sensors/componentsEngine speed sensor
Frequency of operationContinuous
DurationCase 1: 0.016 sec.
Case 2: 3 times
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not presentSee page DI±18
Case 1:
Engine speed450 rpm±
StarterOFF
Time after starter ON to OFF3 sec.±
Case 2:
Time after starter ON to OFF0.3 sec.±
Number of camshaft position sensor sig-
nal pulse3±
Battery voltage7 V±
Ignition switchON
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Case 1:
Engine speed signalNo signal for 0.016 sec.
Case 2:
Number of crankshaft position sensor signal pulse44 or less, or 58 or more

A21026
Component Side
C2
Crankshaft Position Sensor
± DIAGNOSTICSENGINE
DI±213
407 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:

Read freeze frame data using the hand±held tester. Freeze frame records the engine conditions when
a malfunction is detected. When troubleshooting it is useful for determining whether the vehicle was
running or stopped. the engine was warmed up or not, the air±fuel ratio lean or rich, etc. at the time
of the malfunction.

READ VALUE ON HAND±HELD TESTER
(a) Connect the hand±held tester to the DLC3.
(b) Start the engine and push the hand±held tester tool main switch ON.
(c) When using hand±held tester, enter the following menu: ºDIAGNOSIS / ENHANCED OBD II / DATA
LIST / ALL / ENGINE SPDº.

The engine speed can be confirmed in DATA LIST using the hand±held tester. If there are no NE sig-
nals from the crankshaft position sensor despite the engine revolving, the engine speed will be indi-
cated as zero. If voltage output of the crankshaft position sensor is insufficient, the engine speed will
be indicated as lower RPM (than the actual RPM).
1 Check resistance of crankshaft position sensor.
PREPARATION:
Disconnect the C2 crankshaft position sensor connector.
CHECK:
Measure the resistance between terminals 1 and 2.
OK:
Standard:
Tester ConnectionSpecified Condition
1 ± 2985 to 1,600 W at cold
1 ± 21,265 to 1,890 W at hot
NOTICE:
º Coldº and ºHotº shown above mean the temperature of
the coils themselves. ºColdº is form ±10°C (14°F) to 50°C
(122°F) and ºHotº is from 50°C (122°F) to 100°C (212°F).
NG Replace crankshaft position sensor.
OK

A21027
Wire Harness Side
Crankshaft Position Sensor C2
B17414
E6ECM Connector
NE± NE+
BR3795OK NGClearance
DI±214
± DIAGNOSTICSENGINE
408 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check for open and short in harness and connector between ECM and
crankshaft position sensor.
PREPARATION:
(a) Disconnect the C2 crankshaft position sensor connector.
(b) Disconnect the E6 ECM connector.
CHECK:
Measure the resistance between the wire harness side connec-
tors.
OK:
Standard:
Tester ConnectionSpecified Condition
Crankshaft position sensor (C2±1) ±
NE+ (E6±21)Below 1 W
Crankshaft position sensor (C2±2) ±
NE± (E6±20)Below 1 W
Crankshaft position sensor (C2±1) or
NE+ (E6±21) ± Body ground10 kW or higher
Crankshaft position sensor (C2±2) or
NE± (E6±20) ± Body ground10 kW or higher
NG Repair or replace harness or connector.
OK
3 Check sensor installation (crankshaft position sensor).
CHECK:
Check the crankshaft position sensor installation.
OK:
The crankshaft position sensor is installed properly.
NG Tighten sensor installation bolt.
OK

± DIAGNOSTICSENGINE
DI±215
409 Author: Date:
2005 SEQUOIA (RM1146U)
4 Inspect teeth of sensor plate.
PREPARATION:
Remove the crankshaft angle sensor plate (See page EM±99).
CHECK:
Check the teeth of sensor plate.
NG Replace sensor plate.
OK
Replace ECM (See page SF±80).

A23538
20 msec./DIV (idling) 2 V/DIV
Ground VV1
VV2
NE VV1, VV2 and NE Signal Waveforms
Ground
Ground
± DIAGNOSTICSENGINE
DI±217
411 Author: Date:
2005 SEQUOIA (RM1146U)
Reference: Inspection using the oscilloscope.
The correct waveform is as shown.
Tester ConnectionSpecified Condition
G2+ (E5±27) ± G2± (E5±32)Ct fi hNE+ (E5±25) ± NE± (E5±24)Correct waveform is as shown
MONITOR DESCRIPTION
If there are no signals from the camshaft position sensor even though the engine is turning, or if the rotation
of the camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction of the sen-
sor.
MONITOR STRATEGY
P0340VVT sensor (Bank 1) range check or rationality
RltdDTCP0341VVT sensor (Bank 1) range check or rationalityRelated DTCsP0345VVT sensor (Bank 2) range check or rationality
P0346VVT sensor (Bank 2) range check or rationality
Rid / tMain sensors/componentsVVT sensorRequired sensors/componentsRelated sensors/componentsCrankshaft position sensor, Engine speed sensor
Frequency of operationContinuous
Duration5 sec.
MIL operationP0340, P0345 case 1: 2 driving cycles
P0340, P0345 case 2, P0341, P0346: Immediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
P0340, P0345 Case 1:
StarterON
Minimum battery voltage while starter ON±11 V
P0340, P0345 Case 2:
Engine RPM600 rpm±
StarterOFF
Battery voltage8 V±
Ignition switchON
P0341, P0346:
StarterAfter OFF to ON timing
Engine revolution720CA

DI±218
± DIAGNOSTICSENGINE
412 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
P0340, P0345 Case 1:
VVT sensor signalNo signal
P0340, P0345 Case 2:
VVT sensor signalNo signal
P0341, P0346:
VVT sensor count12 or more / 720CA (= Engine 2 revolutions)
COMPONENT OPERATING RANGE
ParameterStandard Value
VVT sensor signal input during every 720CA3
WIRING DIAGRAM
Refer to DTC P0335 on page DI±210.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air±fuel ratio was lean or rich, as well as other
data from the time when a malfunction occurred.
1 Check resistance of camshaft position sensor (See page SF±76).
NG Repair or replace harness or connector.
OK