Failure Analysis of Polaris Car Assist Brake Vacuum Pump

A 2004 Polaris 1.8L comfortable sedan, the car owners found the car came abnormal sound. Repair mechanic found the auxiliary brake vacuum pump long-term non-stop operation, and occasionally will stall for a few minutes. Polaris equipped with a controlled vacuum pump, engine control unit based on the engine load, speed, throttle position and brake light switch signal to calculate the brake booster pressure, and then with the engine control unit intake manifold pressure model In contrast, decide whether to turn on the vacuum pump. The car may be abnormal sound controllable vacuum pump some part of a fault. Connect VAS5051, enter 01 address, read the fault code with 02 function, there are 3 permanent fault codes that can not be cleared. They are fuel tank vent valve N80 fault, air flow meter G70 fault and oxygen sensor heater fault. Visually found that the car fitted with anti-theft devices and reversing radar, and the anti-theft horn was a long self-tapping screw on the firewall, the long screw piercing the main control unit of the engine power bundle and make One of the lines cut the ground. Check the circuit diagram that this line is the air flow meter, tank vent valve and oxygen sensor heating coil power supply, three lines share a fuse S243, after checking the fuse has blown fuse blown fuse failure, Cause air flow meter, tank vent valve, oxygen sensor heating coil no working power. If the engine ECU does not receive the load signal (air flow meter signal), and after comparing with the standard data, it will consider the vacuum pressure in the brake is insufficient, thus controlling the auxiliary brake vacuum pump to work, resulting in the above malfunction. Re-banding finishing lines, and then start the test, the fault code can be cleared, and no longer reproduce, auxiliary brake vacuum pump is no longer frequent movements, fault completely ruled out. In troubleshooting, the idea must be open, especially when several fault codes appear at the same time, and can not be cleared, usually have a certain relationship between them, so to use the method of thinking to analyze.

leather tape measure

The easy-maintained PU material is soft to wrap the whole tape measure inside, protecting it from dirt and impact. The PU cover can also be customized by the color and stamped with your company logo. Too maintain consistency of design, the tape puller is seamed with the same PU material. As to the fiberglass tape, it bears two different measuring units on the different side, among which, one side measures in inch and the other in centimeter. The reinforced vinyl tape features high flexibility which allows itself to measure both flat and curvy surfaces. Durable soft tape is waterproof and stain resistant, so it is easy to keep clean for clear measurement. The tape can be customized on the tape scale(cm/inch only or both), tape length(60inch/150cm normally), tape color and logo printing. User-friendly retractable feature enable simple storage and effortless retraction.



Features

  1. User-friendly retract button---effortless retraction and easy storage
  2. Personalized PU cover with stamped company logo---ideal promotional gift
  3. Inch and metric 2-in-1 tape---free from conversions and waterproof (other customized tape patterns is available)
  4. ABS plastic case---strong and durable to protect the inner mechanism and the tape




About Material

The tape measure is made of ABS case coated in PU leatheror real leather, PVC coated fiberglass. All the materials are eco-friendly, which pass ROHS and EN-71 tests. The lead content is less than 5ppm.


About Case Color

Case colors can be customized according to pantone code.


About Custom Logo

Custom logo is available.
For 1-2colors logo, we will use silk printing
For full color logo, we will print it with heat transfer printing ,
And we also make normal sticker or epoxy plate logo sticker for single color or full color logo
For PU or real leather tape measure, we can make emboss logo


About Tape Colors

Standard tape colors are in white and black
We can make pink, green or other colors.
Full color design is available too.


About Tapeline Size

The standard length is 150cm/60inch and 100cm/40inches
We have longer one in length of 180cm/72inch and 200cm/79inch, and the maximum length is 214cm.

Tape width is 7.5mm.


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