Toyota Tundra (2015 year). Manual — part 1301
A
(a) Disconnect the purge VSV connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
TESTER
CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
SUSPECTED
TROUBLE AREA
PROCEED
TO
D29-1 - Body
ground
Ignition
switch ON
11 to 14 V
Purge VSV power
source normal
Wire
harness
or
connector
between
purge
VSV and
ECM
A
Ignition
switch ON
Other than
result
above
Wire harness or
connectors between
purge VSV and
battery
B
Text in Illustration
*a
B
GO TO STEP 40
26.
CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the purge VSV connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-63 (PRG) - D29-2
Always
Below 1 Ω
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-63 (PRG) or D29-2 - Body ground
Always
10 kΩ or higher
OK
GO TO STEP 47
NG
GO TO STEP 40
27.
INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
TESTER
CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
SUSPECTED TROUBLE AREA
PROCEED
TO
R12-5 (VLVB) - Body
ground
Ignition switch
ON
11 to 14 V
Wire harness or connector
between vent valve and ECM
Vent valve
Canister (charcoal filter inside
canister) clogged
ECM
A
Ignition switch
ON
Below 3 V
Text in Illustration
*a
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
A
A
B
GO TO STEP 40
28.
INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)
(a) Turn the ignition switch off.
(b) Disconnect the R12 canister pump module connector.
(d) Touch the canister pump module to confirm the vent valve
operation.
Result
CONDITION
TESTER
RESULT
SUSPECTED TROUBLE AREA PROCEED
TO
Apply battery
voltage to
terminals VLVB
and VGND
Operating
Wire harness or
connector
between vent
valve and ECM
Canister (charcoal
filter inside
canister) clogged
ECM
A
Not
operating
Vent valve
B
Text in Illustration
*a
Component without harness connected
(Canister Pump Module)
B
GO TO STEP 38
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
A
29.
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the canister pump module connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A24-30 (VPMP) - R12-1 (VGND)
Always
Below 1 Ω
A24-30 (VPMP) or R12-1 (VGND) - Body ground
Always
10 kΩ or higher
Result
RESULT
SUSPECTED TROUBLE AREA
PROCEED TO
OK
Canister (charcoal filter inside canister) clogged
ECM
A
NG
Wire harness or connector between ECM and canister pump module
B
B
GO TO STEP 40
30.
INSPECT CANISTER ASSEMBLY (CHARCOAL FILTER INSIDE CANISTER)
(a) Check for filter blockage in the canister assembly
.
OK:
No blockages in the canister assembly.
OK
GO TO STEP 47
NG
GO TO STEP 48
31.
CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
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