2001 TOYOTA SEQUOIA Service Repair Manual

Page 417 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual A03401
IGT Signal Waveform
IGT
GND
IGF
20 msec./Division GND
A20793
Normal Ignition signal 
(IGT)
Ignition 
confirmation 
signal (IGF)Malfunction
Circuit Open ECM
IGFIGT
IgniterIgnition Coil
Time Igni

Page 418 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual DI±224
± DIAGNOSTICSENGINE
418 Author: Date:
2005 SEQUOIA   (RM1146U)
MONITOR STRATEGY
P0351No. 1 ignition coil with igniter circuit malfunction
P0352No. 2 ignition coil with igniter circuit malfu

Page 419 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual A15470A19381
I8 Ignition Coil with Igniter No. 8
B±W
BR23
Ignition  Coil with Igniter No. 7 I7
4
1
B±R
B±RECM
24
E8IGF1
IGF2
IGT8 E8
25
12E8
IGT7 9
E8
IGT6
11E8
15 E8 IGT5
E8
8IGT4
IGT3
E814
IGT2 1

Page 420 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual DI±226
± DIAGNOSTICSENGINE
420 Author: Date:
2005 SEQUOIA   (RM1146U)
INSPECTION PROCEDURE
HINT:
If DTCs P0351, P0354, P0356 and P0357 are output simultaneously, IGF1 circuit may be open or
short

Page 421 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual A21025
Wire Harness Side:
I1
I2
I3I4
I5I6
I7I8
Ignition Coil with Igniter Connector
B17412
E8
IGF2IGF1
ECM Connector
± DIAGNOSTICSENGINE
DI±227
421 Author: Date:
2005 SEQUOIA   (RM1146U)
2 Check f

Page 422 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual B17411
IGF1 IGF2(+) (+)E8
E6
E1 (±)
DI±228
± DIAGNOSTICSENGINE
422 Author: Date:
2005 SEQUOIA   (RM1146U)
3 Disconnect ignition coil with igniter connector, and check voltage between ter-
minals

Page 423 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual 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

Page 424 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual B17411E8
IGT8
IGT2IGT4
IGT5 IGT6IGT3
IGT7IGT1E1(+)(±) (+) (+)
(+)
(+)
(+)
(+)
(+)
E6
DI±230
± DIAGNOSTICSENGINE
424 Author: Date:
2005 SEQUOIA   (RM1146U)
5 Check voltage between terminals IGT1