Toyota Tundra (2015 year). Manual — part 1679
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25.
CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV)
(a) Disconnect the D29 purge VSV connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table
below.
Result
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
condition
above
Wire harness or
connectors between
purge VSV and
battery
B
B
GO TO STEP 41
26.
CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
(a) Disconnect the D74 ECM connector and the D29 purge VSV connectors.
(b) 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
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
A
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-63 (PRG) or D29-2 - Body ground
Always
10 kΩ or higher
OK
GO TO STEP 49
NG
GO TO STEP 41
27.
INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)
(a) Turn the ignition switch off.
(b) Disconnect the R12 canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Result
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
B
GO TO STEP 41
28.
INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)
(a) Turn the ignition switch off.
(b) Disconnect the R12 canister pump module connector.
(c) Apply the battery voltage to 5 (VLVB) and 1 (VGND) terminals
operation.
Result
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
A
A
TEST
RESULT
SUSPECTED TROUBLE AREA
PROCEED
TO
Operating
Wire harness or connector between
vent valve and ECM
Canister (charcoal filter inside
canister) clogged
ECM
A
Not
operating
Vent valve
B*1
C*2
*1: for 100 L (26.4 US gal) Fuel Tank
*2: for 144 L (38 US gal) Fuel Tank
B
GO TO STEP 38
C
GO TO STEP 39
29.
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)
(a) Disconnect the A24 ECM connector.
(b) Disconnect the R12 canister pump module connector.
(c) Measure the resistance according to the value(s) in the table below.
Result
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
SUSPECTED TROUBLE AREA
PROCEED
TO
A24-30 (VPMP) - R12-1
(VGND)
Always
Below 1 Ω
ECM
A
Always
10 kΩ or higher
Wire harness between ECM and canister
pump module
B
B
GO TO STEP 41
30.
INSPECT CHARCOAL CANISTER ASSEMBLY (CHARCOAL FILTER INSIDE CHARCOAL
CANISTER ASSEMBLY)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
A
(a) Check for filter blockage in the charcoal canister assembly
.
OK:
No blockages in the charcoal canister assembly.
OK
GO TO STEP 49
NG
GO TO STEP 50
31.
CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE)
(a) Turn the ignition switch off.
(b) Disconnect the R12 canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Result
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
SUSPECTED TROUBLE AREA
PROCEED
TO
R12-3 (MTRB) -
Body ground
Ignition switch
ON
9 to 14 V
Wire harness between leak
detection pump and body ground
Leak detection pump
A
Below 3 V
Wire harness between leak
detection pump and ECM
ECM
B
B
GO TO STEP 33
32.
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
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