2001 TOYOTA SEQUOIA oil

A21025
Wire Harness Side:
I1
I2
I3I4
I5I6
I7I8
Ignition Coil with Igniter Connector
B17412
E8
IGT8 IGT2
IGT4
IGT5
IGT6IGT3 IGT7IGT1
ECM Connector
± DIAGNOSTICSENGINE
DI±229
423 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check for open and short in harness and connector in IGT signal circuit between
ECM and ignition coil with igniter.
PREPARATION:
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition with ig-
niter coil connector.
(b) Disconnect the E8 ECM connector.
CHECK:
Check the resistance between the wire harness side connec-
tors.
OK:
Standard:
Tester ConnectionSpecified Condition
Ignition coil (I1±2) ± IGT1 (E8±8)Below 1 W
Ignition coil (I2±2) ± IGT2 (E8±15)Below 1 W
Ignition coil (I3±2) ± IGT3 (E8±11)Below 1 W
Ignition coil (I4±2) ± IGT4 (E8±10)Below 1 W
Ignition coil (I5±2) ± IGT5 (E8±13)Below 1 W
Ignition coil (I6±2) ± IGT6 (E8±12)Below 1 W
Ignition coil (I7±2) ± IGT7 (E8±14)Below 1 W
Ignition coil (I8±2) ± IGT8 (E8±9)Below 1 W
Ignition coil (I1±2) or IGT1 (E8±8) ±
Body ground10 kW or higher
Ignition coil (I2±2) or IGT2 (E8±15) ±
Body ground10 kW or higher
Ignition coil (I3±2) or IGT3 (E8±11) ±
Body ground10 kW or higher
Ignition coil (I4±2) or IGT4 (E8±10) ±
Body ground10 kW or higher
Ignition coil (I5±2) or IGT5 (E8±13) ±
Body ground10 kW or higher
Ignition coil (I6±2) or IGT6 (E8±12) ±
Body ground10 kW or higher
Ignition coil (I7±2) or IGT7 (E8±14) ±
Body ground10 kW or higher
Ignition coil (I8±2) or IGT8 (E8±9) ±
Body ground10 kW or higher
NG Repair or replace harness or connector.
OK

B17411E8
IGT8
IGT2IGT4
IGT5 IGT6IGT3
IGT7IGT1E1(+)(±) (+) (+)
(+)
(+)
(+)
(+)
(+)
E6
± DIAGNOSTICSENGINE
DI±231
425 Author: Date:
2005 SEQUOIA (RM1146U)
6 Disconnect ignition coil with igniter connector, and check voltage between ter-
minals IGT1 ± IGT8 and E1 of ECM connector.
PREPARATION:
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with
igniter connector.
(b) Turn the ignition switch to ON.
CHECK:
Measure the voltage between terminals the E6 and E8 ECM
connectors when the engine is cranked.
OK:
Standard:
Tester ConnectionSpecified Condition
IGT1 (E8±8) ± E1 (E6±1)4.5 V or more
IGT2 (E8±15) ± E1 (E6±1)4.5 V or more
IGT3 (E8±11) ± E1 (E6±1)4.5 V or more
IGT4 (E8±10) ± E1 (E6±1)4.5 V or more
IGT5 (E8±13) ± E1 (E6±1)4.5 V or more
IGT6 (E8±12) ± E1 (E6±1)4.5 V or more
IGT7 (E8±14) ± E1 (E6±1)4.5 V or more
IGT8 (E8±9) ± E1 (E6±1)4.5 V or more
NG Replace ECM (See page SF±80).
OK

A21025
Wire Harness Side:
I1
I2
I3I4
I5I6
I7I8Ignition Coil with
Igniter Connector
DI±232
± DIAGNOSTICSENGINE
426 Author: Date:
2005 SEQUOIA (RM1146U)
7 Check ignition coil with igniter power source circuit.
PREPARATION:
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with
igniter connector.
(b) Turn the ignition switch to ON.
CHECK:
Measure the voltage between the terminal of the wire harness
side connector and body ground.
OK:
Standard:
Tester ConnectionSpecified Condition
I1±1 ± Body ground
I2±1 ± Body ground
I3±1 ± Body ground
I4±1 ± Body ground9t 14VI5±1 ± Body ground9 to 14 V
I6±1 ± Body ground
I7±1 ± Body ground
I8±1 ± Body ground
OK Repair ignition coil with igniter.
NG

A21025
Wire Harness Side:
I1
I2
I3I4
I5I6
I7I8Ignition Coil with Igniter
A21378
Wire Harness Side:
I18
Ignition SwitchIG2
± DIAGNOSTICSENGINE
DI±233
427 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check for open and short in harness and connector between ignition switch and
ignition coil with igniter.
PREPARATION:
(a) Disconnect the I1, 2, I3, I4, I5, I6, I7 or I8 ignition coil with
igniter connector.
(b) Disconnect the I18 ignition switch connector.
CHECK:
Measure the resistance between the wire harness side connec-
tors.
OK:
Standard:
Tester ConnectionSpecified Condition
Ignition coil (I1±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I2±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I3±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I4±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I5±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I6±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I7±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I8±1) ± IG2 (I18±6)Below 1 W
Ignition coil (I1±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I2±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I3±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I4±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I5±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I6±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I7±1) or IG2 (I18±6) ±
Body ground10 kW or higher
Ignition coil (I8±1) or IG2 (I18±6) ±
Body ground10 kW or higher
NG Repair or replace harness or connector.
OK
Replace ignition coil with igniter.

I18
Ignition
SW
A23552
ECM
STOPSTP
ALT
BatteryE4
16 G±Y
J/C1 S14 Stop Light SW
2
G±W
BR7
Stop
Light
LH
R8
Stop
Light
RH3
5
8W±R
A W
High
Mounted
Stop Light
W±B 1L
1 1F
7
F10
Fusible
Link
BlockInstrument
Panel J/B1
4EG±Y
4B8
Brake Inhibit Relay
G±Y 4
See VSC System 2
W
J19
J/CB
C
IC
CC
C
4
BD1
1
22
1H9 H9(*1)
(*2) (*1)(*2)
BD2
12 J/C
A1
4
G±W IG2
*1: w/o Rear Spoiler
*2: w/ Rear Spoiler AM2
To Towing
Converter Relay
W±BST1±
E4 15
4C 4A1
1
3
L±B Sub J/B No.4
2
IGN1 B±O2
4D2
4A
1E 17
2 1C
1 A
J44J11
J/C J10
J
J33
J34 C
3
IJ
52C
2D 11
AM2
B W±RB±R
6
Instrument
Panel J/B
BP1
4 G±W B±O
G±W
G±W G±WSub J/B No.4
J10
J45
4
BJ J57
J/CA
W±BW±B G±W
High
Mounted
Stop LightG±WJ20
J/C G±W H
Engine Room
J/B DI±284
± DIAGNOSTICSENGINE
478 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

DI±304
± DIAGNOSTICSENGINE
498 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P1340, P1341 Camshaft Position Sensor ºAº (Bank
Sensor 1)
CIRCUIT DESCRIPTION
Camshaft position sensor (G signal) consists of a magnet, iron core and pickup coil.
The camshaft drive gear (LH) has 3 teeth on its inner circumference. When the camshaft gear rotates, air
gap changes between the protrusion on the gear and the pickup coil. The change affects the magnetic field
and result in change in the resistance of the MRE element.
The crankshaft signal plate has 32 teeth and is mounted on the crankshaft. The crankshaft position sensor
generates 32 signals at every engine revolution. The ECM detects the standard crankshaft angle based on
the G signal and the actual crankshaft angle and the engine speed by the NE signal.
DTC No.DTC Detecting ConditionTrouble Area
P1340
No camshaft position sensor signal to ECM during cranking
(2 trip detection logic)
Open or short in camshaft position sensor circuit

Camshaft position sensor
P1340
P1341No camshaft position sensor signal to ECM with engine speed
600 rpm or more

Camshaft osition sensor

LH camshaft timing pulley

ECM
MONITOR DESCRIPTION
The camshaft position sensor (G signal) consists of a magnet and MRE element.
The camshaft drive gear has 5 teeth on its inner circumference. When the camshaft gear rotates, air gap
changes between the protrusion on the gear and the pickup coil. The change affects the magnetic field and
result in change in the resistance of the MRE element. The crankshaft angle sensor plate has 32 teeth and
output 32 signals every engine revolution. The ECM detects the standard crankshaft angle based on the
G signal and actual crankshaft angle and engine speed by NE signal.
MONITOR STRATEGY
RltdDTC
P1340Camshaft position sensor (Bank 1) range check
or rationality
Related DTCs
P1341Camshaft 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 operationP1340 case 1 (no signal): 2 driving cycles
P1340 case 2 (mis±aligned), P1341: Immediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
P1340 Case 1 (No signal):
StarterON
Minimum battery voltage while starter ON±11 V
DID8F±01

± DIAGNOSTICSENGINE
DI±493
687 Author: Date:
2005 SEQUOIA (RM1146U)
ECM Power Source Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to terminal IGSW of the ECM and
the EFI relay control circuit in the ECM sends a signal to terminal MREL of the ECM switching on the EFI
relay.
This signal causes current to flow to the coil, closing the contacts of the EFI relay and supplying power to
terminal +B of the ECM.
DID8K±01

DIDIJ±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±517
711 Author: Date:
2005 SEQUOIA (RM1146U)
TOYOTA PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
Part and system nameDefinition
Toyota HCAC system, Hydrocarbon adsorptive Catalyst
(HCAC) system, HC adsorptive three±way catalystHC adsorptive three±way catalytic converter
Variable Valve Timing sensor, VVT sensorCamshaft position sensor
Variable valve timing system, VVT systemCamshaft timing control system
Camshaft timing oil control valve, Oil control valve OCV,
VVT, VSVCamshaft timing oil control valve
Variable timing and lift, VVTLCamshaft timing and lift control
Crankshaft position sensor ºAºCrankshaft position sensor
Engine speed sensorCrankshaft position sensor
THAIntake air temperature
Knock control moduleEngine knock control module
Knock sensorEngine knock sensor
Mass or volume air flow circuitMass air flow sensor circuit
Vacuum sensorManifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCMPower train control module
FC idleDeceleration fuel cut
Idle air control valveIdle speed control
VSV for CCV, Canister close valve VSV for canister controlEvaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
EVAP VAV, Purge VSVEvaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSVEvaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensorFuel tank pressure sensor
Charcoal canisterEvaporative emissions canister
ORVR systemOn±board refueling vapor recovery system
Intake manifold runner controlIntake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)Intake manifold tuning valve
Intake control VSVIntake manifold tuning solenoid valve
AFSAir fuel ratio sensor
O2 sensorHeater oxygen sensor
Oxygen sensor pumping current circuitOxygen sensor output signal
Oxygen sensor reference ground circuitOxygen sensor signal ground
Accel position sensorAccelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motorElectronic throttle actuator
Electronic throttle control system, Throttle actuator control
systemElectronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switchThrottle position sensor
Turbo press sensorTurbocharger pressure sensor
Turbo VSVTurbocharger pressure control solenoid valve
P/S pressure switchPower±steering pressure switch
VSV for ACMActive control engine mount
Speed sensor, Vehicle speed sensor ºAº, Speed sensor for
skid control ECUVehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ºAºTransmission fluid temperature sensor
Electronic controlled automatic transmission, ECTElectronically controlled automatic
Intermediate shaft speed sensor ºAºCounter gear speed sensor