- Open or short in purge VSV circuit
- Purge VSV
- ECM
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIAD |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0443; Evaporative Emission Control System Purge Control Valve Circuit; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
DTC |
P0443 |
Evaporative Emission Control System Purge Control Valve Circuit |
DESCRIPTION
HINT:
This DTC P0443 is applicable to Mexico models only.
To reduce hydrocarbons (HC) emissions, evaporated fuel from the fuel tank is routed through the canister to the intake manifold for combustion in the cylinders.
The ECM changes the duty signal to the purge VSV so that the intake quantity of hydrocarbons (HC) emissions is appropriate for the driving conditions (engine load, engine speed, vehicle speed, etc.) after the engine is warmed up.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0443 |
All of the following conditions (a) and (b) are met (1 trip detection logic) (a) The target control value and actual control value do not match for 10 seconds or more. (b) The target control value and actual control value do not match for 80 times or more |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) |
|
(a) Connect the Techstream to the DLC3. |
|
(b) Remove the purge hose of the purge VSV from the canister.
Text in Illustration
|
*1 |
Purge Hose (to Canister) |
|
*2 |
Purge VSV |
(c) Start the engine and turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Evap Control.
(e) Check if air is sucked into the port when operating the purge VSV using the Techstream.
OK:
|
Techstream Operation |
Specified Condition |
|---|---|
|
Purge VSV is on |
Suction of air |
|
Purge VSV is off |
No suction of air |
| OK |
|
|
|
2. |
INSPECT PURGE VSV |
(a) Inspect the purge VSV (See page
![2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE EMISSION CONTROL: PURGE VALVE: INSPECTION](/t3Portal/stylegraphics/info.gif)
).
| NG |
|
|
|
3. |
INSPECT PURGE VSV (POWER SOURCE) |
|
(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.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
B22-1 - Body ground |
Ignition switch ON |
11 to 14 V |
Text in Illustration
|
*a |
Front view of wire harness connector (to Purge VSV) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (PURGE VSV - EFI MAIN RELAY) |
|
|
4. |
CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) |
(a) Disconnect the purge VSV connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B22-2 (Purge VSV) - B1-63 (PRG) |
Always |
Below 1 Ω |
Standard Resistance (Check for Short):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B22-2 (Purge VSV) or B1-63 (PRG) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|