Toyota Sequoia (2005). Manual — part 96
–
DIAGNOSTICS
ENGINE
DI–187
381
TYPICAL ENABLING CONDITIONS
It
Specification
Item
Minimum
Maximum
The monitor will run whenever these
DTCs are not present
See page
Battery voltage
8 V
–
Throttle position learning
Completed
VVT system
Normal operate by scan–tool
Engine RPM
400 to 5,700rpm
All of the following conditions are met:
Condition 1 and 2
1. Engine coolant temperature
–10
C (14
F)
–
2. Either of the following conditions is met:
Condition (a) or (b)
(a) Engine coolant temperature at engine
start
–7
C (19
F)
–
(b) Engine coolant temperature
20
C (68
F)
–
Fuel–cut
OFF
Emission–related–misfire:
First 1,000 revolutions after engine start,
or check mode
Crankshaft 1,000 revolutions
Except above
Crankshaft 1,000 revolutions x 4
Catalyst–damage–misfire (MIL blinks):
All of the following conditions 1, 2 and 3
are met
Crankshaft 200 revolutions
1. Driving cycle
1st
2. Check mode
OFF
3. Engine RPM
–
2,800 rpm
Except above
Crankshaft 200 revolutions x 3
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
Threshold
Emission–related–misfire:
Misfire rate:
1.2 % or more
Catalyst–damage–misfire (MIL blinks):
Number of misfire per 200 revolutions
93 or more
(varies with intake air amount and RPM)
Multiple cylinders misfire
Detected
MONITOR RESULT
Refer to page
for detailed information.
The test value and test limit information are described as shown in the following table. Check the monitor
result and test values after performing the monitor drive pattern (refer to ”Confirmation Monitor”).
MID (Monitor Identification Data) is assigned to each emissions–related component.
TID (Test Identification Data) is assigned to each test value.
Scaling is used to calculate the test value indicated on generic OBD ll scan tools.
DI–188
–
DIAGNOSTICS
ENGINE
382
Misfire monitor – All cylinders
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A1
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A1
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 1
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A2
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A2
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 2
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A3
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A3
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 3
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A4
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A4
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 4
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A5
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A5
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 5
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A6
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A6
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 6
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A7
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A7
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
–
DIAGNOSTICS
ENGINE
DI–189
383
Misfire monitor – Cylinder 7
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A8
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A8
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
Misfire monitor – Cylinder 8
MID
TID
Scaling
Description of Test Value
Minimum Test Limit
Maximum Test Limit
$A9
$0B
Multiply by 1
(time)
Exponential Weighted Moving Average
misfire counts for last 10 driving cycles
– total
0
65535
$A9
$0C
Multiply by 1
(time)
Misfire counts for last and current driv-
ing cycles – total
0
65535
A15466
A19380
Battery
I18
Ignition SW
1
#80
#60
#40
#20
#70
#50
ECM
#30
#10
6
2
I10 Injector No.2
I12 Injector No.4
I13 Injector No.5
I14 Injector No.6
I15 Injector No.7
I16 Injector No.8
7
1
2
1
2
1
2
1
2
1
2
2
2
2
3
2
5
7
4
I9 Injector No.1
1C
2D
1
B
F10
Fusible Link Block
IGN2
Engine Room J/B
5
4
B
2C
1
1C
1J
1D
2
3
W–R
6
AM2
Instrument Panel J/B
W–R
3
B–R
1
1
1
I11 Injector No.3
IG4
13
E8
E6
E6
E8
E6
E6
E6
E6
R–W
B–R
B–R
B–R
B–R
B–R
B–R
B–R
Y
R–B
L–R
W
L
G
R
B–R
B–R
B–R
5
IG2
AM2
B–R
B–R
B–R
B–R
B–R
DI–190
–
DIAGNOSTICS
ENGINE
384
WIRING DIAGRAM
Refer to DTC P0351 on page
for the wiring diagram of the ignition system.
CONFIRMATION DRIVING PATTERN
(a)
Connect the hand–held tester to the DLC3.
(b)
Record DTC and the freeze frame data.
(c)
Use the hand–held tester to set the check mode (See page
).
(d)
Read the value on the misfire counter for each cylinder when idling. If the value is displayed on the
misfire counter, skip the following procedure of confirmation driving.
(e)
Drive the vehicle several times with the engine speed, load and surrounding range shown as ENGINE
SPD, CALC LOAD in the freeze frame data or MISFIRE RPM, MISFIRE LOAD in the DATA LIST.
If you have no hand–held tester, turn the ignition switch OFF after the symptom is simulated once. Then re-
peat the simulation process again.
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