Hello, I am in need of some guidance to help with my learning curve for electronics and diagnosing. Specifically where do you find resistance and voltages for the electronics so I can determine if part a is good or bad.
Story, 1998 VW, AGR / ALH, NB
I recently finished changing out my timing belt, the job went fine, but when done checking the timing I ran the auto scan to see how the car was doing. And found the faults, see below. I started reading and found myself thinking of part changing, I paused and started thinking about why could I have these errors and engine running fine. Well it turns out that when I used the starter to rotate the engine a few times to let the belt settle in, I didn’t have the sensor(G71,G72) connected and tripped all the faults.
Even though I had the problem solved, I hope, it tickled my curiosity. I looked at my wiring diagram to see what information it had, basically just the flow of the wires, attached below. I checked the resistance but I don’t know what they are supposed to be. I went to the Bosch site and there were not any resistances or voltage values I can use to check functionality. Where do you guys find this information?
3 Faults Found:
00575 - Intake Manifold Pressure
17-10 - Control Difference - Intermittent
00519 - Intake Manifold Pressure Sensor (G71)
31-00 - Open or Short to Ground
00527 - Intake Manifold Temperature Sensor (G72)
30-00 - Open or Short to Plus
Readiness: 0 3 0 0 0
Bosch site https://www.boschautoparts.com/en/auto/pressure-sensors/low-pressure-sensors?partId=0281002177
Story, 1998 VW, AGR / ALH, NB
I recently finished changing out my timing belt, the job went fine, but when done checking the timing I ran the auto scan to see how the car was doing. And found the faults, see below. I started reading and found myself thinking of part changing, I paused and started thinking about why could I have these errors and engine running fine. Well it turns out that when I used the starter to rotate the engine a few times to let the belt settle in, I didn’t have the sensor(G71,G72) connected and tripped all the faults.
Even though I had the problem solved, I hope, it tickled my curiosity. I looked at my wiring diagram to see what information it had, basically just the flow of the wires, attached below. I checked the resistance but I don’t know what they are supposed to be. I went to the Bosch site and there were not any resistances or voltage values I can use to check functionality. Where do you guys find this information?
3 Faults Found:
00575 - Intake Manifold Pressure
17-10 - Control Difference - Intermittent
00519 - Intake Manifold Pressure Sensor (G71)
31-00 - Open or Short to Ground
00527 - Intake Manifold Temperature Sensor (G72)
30-00 - Open or Short to Plus
Readiness: 0 3 0 0 0
Bosch site https://www.boschautoparts.com/en/auto/pressure-sensors/low-pressure-sensors?partId=0281002177