2001 TOYOTA SEQUOIA wiring diagram

A23558
C2
Crankshaft Position Sensor
*1: Shielded C1
Crankshaft Position Sensor
ECM
G±B
(*1)
(*1)VC
E2
EC
BRJ42
J/C
D
DBR 2
Y
1
2L
G
RG2+
G2±
NE+
NE± 123
E8
19
E6
29
E6
21
E6
20
E6 E
EEJ42 J/C
± DIAGNOSTICSENGINE
DI±305
499 Author: Date:
2005 SEQUOIA (RM1146U) P1340 Case 2 (Mis±aligned):
Engine RPM600 rpm±
StarterOFF
P1341:
StarterAfter OFF to ON timing
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
P1340 Case 1 (No signal):
Camshaft position sensor signalNo signal
P1340 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.
P1341:
Crankshaft/Camshaft alignmentMis±aligned
Camshaft position sensor count12 or more / 720CA (= Engine 2 revolutions)
COMPONENT OPERATING RANGE
ParameterStandard Value
Camshaft position sensor signal input at every 720CA3
WIRING DIAGRAM

A23564
Engine Room J/B
EFI Relay
2
1EFI No.2
EFI No.1
3
5 2A2
J5
J/C A
EDW±B1
2F
Battery BF10
FL Block
4
5B
2D1
2H6E4 B±W
IA4
B±W8
MREL
14P±L L±B
E8 E8
2726
AIV2 AIV1 V14
VSV for Air Injection Control
(Bank 1)
V12
VSV for Air Injection Control
(Bank 2)
G±R G±R
G±R
G±R
IG422 J/C J16
BB G±R
IA44
G±R
AA J/C J2
G±RECM
± DIAGNOSTICSENGINE
DI±311
505 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

A23551
Engine Room J/BECM
E4
E4
E4
E4 B±W
IA4
IA4
IA4
IA4
IA4
EB4 ED2
ED2B±W
2H
2A68
EFI Relay
2 1
2F
1 W±B
J5
J/C A
ED
Battery Air Pump Air Switching Valve Air Injection Driver
A43 A46A415
G±RG±R
J2
J/C
A
A EFI No.2 EFI No.1
3 52
2D1
B
4F10
FL Block
5B L
A401
EN B B
B 1
12
2 W
W±L W±L
W
34 2
6 A40
A41A41
A41
A41
A411 2 43
1
8
EBW±BW±B W±B
BATT
VP
VV
E SIP
DI SIV+B
R±W
R±W 8
3
9 G±W G±W
GR±L GR±L4
25
13
AIDAIRPAIRV
A/PUMP
2MREL
14 DI±320
± DIAGNOSTICSENGINE
514 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

B17426
± DIAGNOSTICSENGINE
DI±333
527 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
Refer to DTC P1441, P1444 and P2440 on page DI±314.
INSPECTION PROCEDURE
1 Check any other DTCs output (In addition to secondary air injection system
DTCs).
PREPARATION:
(a) Connect a hand±held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the tester ON.
(c) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
CHECK:
(a) Read DTCs.
RESULT:
Display (DTC Output)Proceed To
ºP1442 and/or P1445º and P2441A
P1442 and/or P1445B
ºP1442 and/or P1445 and/or P2441º and other DTCsC
HINT:
If any DTCs other than P1441 and/or P1444 and P2440 are output, troubleshoot those DTCs first.
B Go to step 6.
C Go to DTC chart (See page DI±58).
A
2 Check vacuum hose between throttle body and VSV for air injection control.
CHECK:
(a) Check that the vacuum hoses between the throttle body
and VSV for air injection control are securely connected.
OK:
The vacuum hoses are securely connected.
CHECK:
(a) Check the vacuum hoses for blockage or damage.
OK:
The vacuum hoses are no blockages and damage.
NG Repair or replace vacuum hoses.
OK

B17411
ECM Connector
E1AIDI
A16555
AIR INJ CHECK
AIR PUMP............................ON
EASV ............................OPEN
ASV1. .............................OPEN
ASV2...............................OPEN
A/F BANK1.......................19.05
A/F BANK2.......................19.05
PRESSURE....................17 kPa
PULSATION..............25.39 kPa
AI STATUS...........................OK
Remaining Time 05 sec.
Press [EXIT] to quit
± DIAGNOSTICSENGINE
DI±345
539 Author: Date:
2005 SEQUOIA (RM1146U) Case 3:
Diagnostic signal duty ratio from air injection driver0 %
Case 4:
Diagnostic signal duty ratio from air injection driver100 %
COMPONENT OPERATING RANGE
ParameterStandard Value
Diagnostic signal duty ratio from air injection driver
70 to 90% when secondary air injection system operating
and
0% when secondary air injection system not operating
WIRING DIAGRAM
Refer to DTC P0412 on page DI±234.
INSPECTION PROCEDURE
HINT:
The diagnostic information output from the AID can be confirmed by connecting an oscilloscope to the diag-
nostic information terminal of the AID. It narrows a trouble area search to read the waveform on the oscillo-
scope when performing the AI system intrusive operation function provided in the SYSTEM CHECK.
(a) Start the engine and warm it up.
(b) Turn the ignition switch to OFF.
(c) Connect a hand±held tester to the DLC3.
(d) Connect an oscilloscope probe to the AIDI terminal of the
ECM.
(e) Start the engine and turn the tester ON.
(f) On the tester, select the following menu items:
DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK /
AIR INJ SYSTEM.
(g) On the tester, select the following menu items:
DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK /
AIR INJ CHECK / MANUAL OPERATION / OPERATION
1 and 2.
HINT:
OPERATION 1: AP: OFF, EASV:CLOSE, ASV1:CLOSE,
ASV2:OFF
OPERATION 2: AP: ON, EASV:OPEN, ASV1:OPEN,
ASV2:OPEN

± DIAGNOSTICSENGINE
DI±355
549 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR STRATEGY
RltdDTC
P2102Throttle actuator control motor current
(Low current)
Related DTCs
P2103Throttle actuator control motor current
(High current)
Required sensors/componentsThrottle actuator motor
Frequency of operationContinuous
Duration2 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
P2102:
Throttle motorON
Duty±cycle ratio to open throttle actuator80%±
Throttle actuator power supply8 V±
Current motor current ± Motor current at
0.016 sec. before±0.2 A
P2103:
Throttle motorON
Either of the following conditions is met:Condition 1 or 2
1. Throttle actuator power supply8 V±
2. Throttle actuator powerON
Battery voltage8 V±
StarterOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
P2102:
Throttle motor currentLess than 0.5 A (when motor drive duty 80% or more)
P2103:
Throttle motor currentMore than 10 A (0.1 sec.)
More than 7 A (0.6 sec.)
WIRING DIAGRAM
Refer to DTC P0120 on page DI±127.

± DIAGNOSTICSENGINE
DI±359
553 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR STRATEGY
RltdDTCP2111Throttle motor actuator lock (Open)Related DTCsP2112Throttle motor actuator lock (Closed)
Rid / tMain sensors/componentsThrottle actuator motorRequired sensors/componentsRelated sensors/componentsThrottle position sensor
Frequency of operationContinuous
Duration0.5 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
P2111:
Throttle motor current2 A±
Throttle motor duty to close side80%±
P2112:
Throttle motor current2 A±
Throttle motor duty to open side80%±
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
|Current throttle position sensor voltage at this time ± throttle
position sensor voltage 0.016 sec. earlier|Less than 0.1 V when throttle motor open (or close) duty 80% or more
WIRING DIAGRAM
Refer to DTC P0120 on page DI±127.
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.

A05652A18100
ECM
+BM
E47
W±G
Battery2H3 ETCS
2D1Engine Room J/B
B
IA413
W±G
4
F10
Fusible Link
Block
5
B DI±364
± DIAGNOSTICSENGINE
558 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM