Page 1241 of 3115

DI-192
- DIAGNOSTICSENGINE
385 Author: Date:
2004 LAND CRUISER (RM1071U)
MONITOR DESCRIPTION
If there is no signal 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
Duration
Case 1: 4.7 sec.
Case 2: 0.016 sec.
Case 3: 2 rev x 5 times
MIL operationCase 1: 2 driving cycles
Case 2, 3: 1 driving cycle
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
Case 1:
StarterON
Minimum battery voltage while starter ON-11 V
Case 2:
Engine speed600 rpm-
StarterOFF
Time after starter ON to OFF3 sec.-
Case 3:
Time after starter ON to OFF0.3 sec.-
Number of camshaft position sensor sig-
nal pulse1
Battery voltage7 V-
Minimum battery voltage while starter ON-11 V
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Case 1:
Engine speed signalNo signal for 4.7 sec.
Case 2:
Engine speed signalNo signal for 0.016 sec.
Case 3:
Number of crankshaft position sensor signal pulse17 or more and 29 or less
Page 1242 of 3115
A19968
C1
Camshaft Position Sensor
C3
Crankshaft Position SensorRECM
NE+
NE-
E2 27
2 12 1
25
24
GE7
G2+
G2-
32
E7
E7
E7 (Shielded)
E7
E1
ECBR1
DD EE E L G (Shielded)
J17
J/C
BR
BR
- DIAGNOSTICSENGINE
DI-193
386 Author: Date:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM
Page 1243 of 3115

A21026
Component Side
C3
Crankshaft Position Sensor
DI-194
- DIAGNOSTICSENGINE
387 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data 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 OF HAND-HELD TESTER OR OBD II SCAN TOOL
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Start the engine and push the hand-held tester or the OBD II scan tool main switch ON.
(c) Select the item ºDIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPDº.
The engine speed can be confirmed in DATA LIST using the hand-held tester or OBD II scan tool. If
there is no NE signals from the crankshaft position sensor despite the engine revolving, the engine
speed will be indicated 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 C3 crankshaft position sensor connector.
CHECK:
Measure the resistance between terminals 1 and 2.
OK:
Tester ConnectionSpecified Condition
12985 to 1,600 W at cold1 - 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
Page 1244 of 3115
A21027
Wire Harness Side
Crankshaft Position Sensor C3
A21028
E7
ECM ConnectorNE- NE+
- DIAGNOSTICSENGINE
DI-195
388 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Check for open and short in harness and connector between ECM and
crankshaft position sensor.
PREPARATION:
(a) Disconnect the C3 crankshaft position sensor connector.
(b) Disconnect the E7 ECM connector.
CHECK:
Measure the resistance between the wire harness side connec-
tors.
OK:
Tester ConnectionSpecified Condition
Crankshaft position sensor (C3-1) -
NE+ (E7-25)Below 1 W
Crankshaft position sensor (C3-2) -
NE- (E7-24)Below 1 W
Crankshaft position sensor (C3-1) or
NE+ (E7-25) - Body ground10 kW or higher
Crankshaft position sensor (C3-2) or
NE- (E7-24) - 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.
NG Tighten sensor.
OK
Page 1245 of 3115
DI-196
- DIAGNOSTICSENGINE
389 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Inspect teeth of sensor plate.
PREPARATION:
Remove the crankshaft angle sensor plate (See page EM-15).
CHECK:
Check the teeth of sensor plate.
NG Replace sensor plate.
OK
Replace ECM (See page SF-60).
Page 1246 of 3115

FI7059
FI7060A00069
G2 and NE Signal Waveforms
20 msec./Division (Idling)
10 msec./Division (Idling)5 V
/Division
G2
NE
5 V
/Division
G2
NE
- DIAGNOSTICSENGINE
DI-197
390 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0340 Camshaft Position Sensor ºAº Circuit
(Bank 1 or Single Sensor)
DTC P0341 Camshaft Position Sensor ºAº Circuit
Range/Performance (Single Sensor)
CIRCUIT DESCRIPTION
The camshaft position sensor (G signal) consists of a magnet iron core and pickup coil.
The G signal plate has 1 tooth on its outer circumference and is installed on the LH camshaft timing pulley.
When the camshafts rotate, protrusion on the signal plate and air gap on the pickup coil change, causing
fluctuations in the magnetic field and generating a voltage in the pickup coil.
The NE signal plate has 34 teeth and is mounted on the crankshaft. The NE signal sensor generates 34
signals at every engine revolution. The ECM detects the crankshaft angle and the engine revolution based
on the NE signals, and the cylinder and the angle of the G2 based on the combination of the G and NE sig-
nals.
DTC No.DTC Detection ConditionTrouble Area
P0340
No camshaft position sensor signal to ECM during cranking
(2 trip detection logic)
P0340No camshaft position sensor signal to ECM with engine
speed 600 rpm or more (1 trip detection logic)Open or short in camshaft position sensor circuit
Camshaftposition sensor
P0341
While crankshaft rotates twice, camshaft position sensor
signal will be input to ECM 12 times or more (1 trip detec-
tion logic)
Hint:
Under normal condition, the camshaft position signal is
input into the ECM 3 times per 2 engine revolutionsCamshaft position sensor
LH camshaft timing pulley
Jumping teeth of timing belt
ECM
Reference: Inspection using the oscilloscope.
The correct waveform is as shown.
Tester ConnectionSpecified Condition
G2+ (E7-27) - G2- (E7-32)Ct fi hNE+ (E7-25) - NE- (E7-24)Correct waveform is as shown
DIC2E-01
Page 1247 of 3115

DI-198
- DIAGNOSTICSENGINE
391 Author: Date:
2004 LAND CRUISER (RM1071U)
MONITOR DESCRIPTION
If there is no signal 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
RltdDTC
P0340Camshaft position sensor (Bank 1) range check
or rationality
Related DTCs
P0341Camshaft position sensor (Bank 1) range check
or rationality
Rid / tMain sensors/componentsCamshaft position sensorRequired sensors/componentsRelated sensors/componentsCrankshaft position sensor, Engine speed sensor
Frequency of operationContinuous
Duration5 sec.
MIL operationP0340 case 1 (no signal): 2 driving cycles
P0340 case 2 (mis-aligned), P0341: Immediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
P0340 Case 1 (No signal):
StarterON
Minimum battery voltage while starter ON-11 V
P0340 Case 2 (Mis-aligned):
Engine speed600 rpm-
StarterOFF
P0341:
StarterAfter OFF to ON timing
Engine revolution720CA
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
P0340 Case 1 (No signal):
Camshaft position sensor signalNo signal
P0340 Case 2 (Mis-aligned):
Crankshaft/camshaft alignment is mis-aligned (judged by comparing the crankshaft position to the camshaft position)
Camshaft position sensor signal: No input in appropriate timing.
P0341:
Crankshaft/Camshaft alignmentMis-aligned
Camshaft position sensor count12 or more / 720CA (= Engine 2 revolutions)
Page 1248 of 3115

A21026
Component Side
Camshaft Position Sensor C1
- DIAGNOSTICSENGINE
DI-199
392 Author: Date:
2004 LAND CRUISER (RM1071U)
COMPONENT OPERATING RANGE
ParameterStandard Value
Camshaft position sensor signal input during every 720CA3
WIRING DIAGRAM
Refer to DTC P0335 on page DI-191.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine 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.
PREPARATION:
Disconnect the C1 camshaft position sensor connector.
CHECK:
Measure the resistance between terminals 1 and 2.
OK:
Tester ConnectionSpecified Condition
121,630 to 2,740 W at cold1 - 22,065 to 3,225 W at hot
NOTICE:
º Coldº and ºHotº shown above mean the temperature of
the coils themselves. ºColdº is from -10°C (14°F) to 50°C
(122°F) and ºHotº is from 50°C (122°F) to 100°C (212°F).
NG Replace camshaft position sensor.
OK