Why did my VW Jetta fail smog check?
Sounds like your VW Jetta failed the smog check because the Secondary Air Injection Monitor was not "ready" or complete. It should be noted that the secondary air injection monitor which checks for the performance of the air pump runs mainly when the engine is cold.
What does the secondary air injection monitor check for?
It should be noted that the secondary air injection monitor which checks for the performance of the air pump runs mainly when the engine is cold. Once the engine warms up the monitor is done checking the pump.
How do I perform a monitor test on my VW?
You may choose to have a VW dealer or repair shop complete monitor testing while your VW is stationary via the use of a scan tool. An advanced scan tool will have the capability to command your VW's engine control module (ECM) to run readiness code diagnostic tests in a special operational mode.
Can a VW Rabbit pass smog test?
Last month I got my VW Rabbit smogged and it passed the smog component but I was failed for my evaportive and secondary air system emission monitors not being ready. My battery had died shortly before the smog test.
How do you set readiness monitors?
Start the engine and idle the engine in drive for two and half minutes, with the A/C and rear defroster on if equipped. Turn the A/C and rear defroster off, and speed up to 90 km/h (55 mph) under moderate, constant acceleration. Hold at a steady speed for three minutes. Slow down to 30 km/h (20 mph) without braking.
How is secondary air injection system diagnosed?
How to Diagnose a Bad Secondary Air Injection Pump?Check Combination Valve & Control Relay. Combination valve failure can cause a secondary air injection pump to overheat and stop functioning. ... Perform Acoustic Check. ... Check Control Valve and Hose Fittings. ... Check the Fuel Tank Pressure Relief Valve. ... Perform Actuator Test.
What is secondary air system monitor?
When vehicles are equipped, the secondary AIR system monitor allows the PCM to ensure that extra air is being delivered to the exhaust system during cold engine operating conditions. This extra air helps heat the catalytic converter quickly when the engine is first started.
What turns on the secondary air pump?
1:394:58How Does Secondary Air Injection Work? - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo on cold start the vehicle determines that it needs secondary area to turn on the air is thenMoreSo on cold start the vehicle determines that it needs secondary area to turn on the air is then flowing in through the intake. It then turns on the secondary air pump it.
How do you fix a secondary air injection system malfunction?
What repairs can fix the P0410 code?Replacing the air injection pump and power relay.Replacing O2 sensors that respond too slow as they age.Replacing the air injection pump intake filter clogged with debris.
What controls the secondary air injection system?
The active secondary air system usually consists of an electric pump (see figure), the control relay, a pneumatic control valve, and a combination valve. The system is controlled by the engine control unit. While the system is working, the electric pump is switched on by the engine control unit via the control relay.
How do I get my oxygen sensor monitor ready?
Stop and idle for 30 seconds. Then smoothly accelerate to 30 to 40 mph. Repeat the last two steps five times. Toyota: The oxygen sensor monitor should run after idling the engine for nine minutes, then driving at a steady 25 mph for two minutes.
How do I get my EVAP system monitor ready?
Start the engine and idle for four minutes, then drive in stop-and-go traffic for five minutes using smooth accelerations and decelerations. Stop and idle for 4 minutes. The EVAP monitor should be complete.
How do I complete a drive cycle?
15 minutes of steady driving on an expressway/highway followed by 20 minutes of stop-and-go driving with at least four 30-second idle periods. Allow the vehicle to sit for at least eight hours without starting the engine. Then, start the engine and complete the above driving cycle.
How do I know if my secondary air pump is working?
Start vehicle engine. If the power supply of the secondary air pump is fine, but the secondary air pump runs with a scraping, whistling or scratching noise or not at all, the secondary air pump is to be replaced. Check electrical contacts of voltage supply to secondary air pump.
Can I drive without secondary air injection?
Technically speaking, you can drive without a secondary injection pump. However, doing so is not advised. What is this? This stems from the fact that a faulty secondary injection pump can cause a host of drivability-related issues, most of which can vary significantly in severity, on a case-by-case basis.
Where is the secondary air pump relay located?
It's located in the electrical box in the engine bay under the right side air filter. You have to take off the entire shroud to get to it.
How do I know if my secondary air pump is bad?
The following are the most common symptoms associated with secondary air injection pump failure.#1 – Check Engine Light. ... #2 – Erratic Idle. ... #3 – Reduced Performance. ... #4 – Failed Emissions Test. ... #1 – Poor Power/Ground Delivery. ... #2 – Compromised Vacuum System. ... #3 – Water Contamination. ... #4 – Age.
How much does it cost to fix a secondary air injection?
Overall, repairing a secondary air injection system will cost you around $450. This cost is split between the cost of parts and the cost of labor. New parts will cost about $250 while labor will usually cost another $150-$200.
What could cause a P0410 code?
Code P0410 is the result of the Engine Control Module (ECM) indicating a malfunctioning Secondary Air Injection System. This happens when the O2 sensor does not accurately detect the changes in the O2 level of the exhaust while the air injection system is functioning.
How do you bypass a secondary air injection system?
1:333:00Toyota Lexus Secondary Air Injection Bypass Kit - Wired vs Plug & Play ...YouTubeStart of suggested clipEnd of suggested clipFor a little bit to make sure that the bypass modules are active and preventing that secondary airMoreFor a little bit to make sure that the bypass modules are active and preventing that secondary air injection system from running what you would need to do is shut the vehicle off.
How to check vacuum on evap?
Evap needs a vacuum supply to the N85. Look at the check valve just downstream of the N85 (above the air box) since that one tends to deteriorate from the hydrocarbon vapors. Start the car and let it idle for a minute or so. You should be able to hear the N85 rapidly cycling (ticking noise). The SAI also needs a vacuum source to the N whatever valve (I am drawing a blank to its designation but it is right next to the N249 valve and it looks the same as the N249). They are both located under the intake manifold. The N whatever valve uses vacuum to open the combi valve (silver disc shaped valve on the back of the head) where the SAI pumps air in. Check the vacuum line running from the N Whatever to the combi valve. That hose tends to split where it connects to the combi valve.
What is the purpose of the evap system?
The evap system vents the hydrocarbon fumes from the gas tank through the intake manifold so they can get burned rather than released to atmosphere.
What happens if you remove SAI?
If SAI is removed you' re still gonna fail readiness. No way around that except hard programming with your ECU software (ie: tuner)
How long to idle a car for misfire?
Decelerate and idle the vehicle again for 3 minutes. This executes the Misfire, Secondary AIR, Fuel Trim, and Purge system monitors.
How long does it take to pass a sanding test?
Once in basic settings, these tests took anywhere from 10 seconds to just under a minute to pass. Close measuring blocks / basic settings and verify in readiness that everything's cool, and you're ready to pass inspection.
Does replacing SAI affect evap?
Replacing the SAI system shouldn't have any affect on the evap system.
How to pass secondary air readiness?
Passing Secondary Air Readiness: 1. Turn car on, let idle. Vag-com -> Engine / Measuring Blocks. 2. Block 77 -> click GO. 3. Raise RPM to 2k and hold it there, and click Basic Settings. 4 Watch the channels, one of them should say Test ON, wait till it says Sys OK, or something like that.