Here’s the [document|27014] section from the ''1999-2005 Jetta service and repair manual'', that may help. [br]
It details how to test the oil pressure warning system.
Just wondering if the pressure switch wire is earthed somewhere.
Looking at the manual when testing the pressure switch warning system, the lead is disconnected from the switch and an earth is placed on the lead. It says that the warning light should flash and a buzzer should beep 3 times. Not sure if this means that the light should also only flash 3 times or only the buzzer beeps 3 times and the light continues to flash. If you leave the wire disconnected from the pressure switch with no earth lead connected to it then the warning light should not come on. If it does it sort of proves there is a problem on the wire .
=== Update (04/02/2022) ===
Hi,
-
Here's the wiring diagram fro the oil warning light circuit that may help if ti comes down to tracing out the circuit.
+
Here's the wiring diagram fro the oil warning light circuit that may help if it comes down to tracing out the circuit.
As noted earlier the rpm seems to be tied in with the oil warning light.
-
The wiring diagram shows the VSS sensor in the same circuit so its input to the instrument cluster control module must be used in conjunction with the oil sensor. Hopefully the module is not faulty as far as the oil warning light goes. Is the speedo accurate and also the tacho (if there is one)?
+
The wiring diagram shows the VSS sensor in the same circuit diagram, so its input to the instrument cluster control module must be used in conjunction with the oil sensor. Hopefully the module is not faulty as far as the oil warning light goes.
+
+
Is the speedo accurate and also the tacho (if there is one)?
Here’s the [document|27014] section from the ''1999-2005 Jetta service and repair manual'', that may help. [br]
It details how to test the oil pressure warning system.
Just wondering if the pressure switch wire is earthed somewhere.
Looking at the manual when testing the pressure switch warning system, the lead is disconnected from the switch and an earth is placed on the lead. It says that the warning light should flash and a buzzer should beep 3 times. Not sure if this means that the light should also only flash 3 times or only the buzzer beeps 3 times and the light continues to flash. If you leave the wire disconnected from the pressure switch with no earth lead connected to it then the warning light should not come on. If it does it sort of proves there is a problem on the wire .
-
=== Update (03/21/2022) ===
-
+
=== Update (04/02/2022) ===
Hi,
Here's the wiring diagram fro the oil warning light circuit that may help if ti comes down to tracing out the circuit.
As noted earlier the rpm seems to be tied in with the oil warning light.
The wiring diagram shows the VSS sensor in the same circuit so its input to the instrument cluster control module must be used in conjunction with the oil sensor. Hopefully the module is not faulty as far as the oil warning light goes. Is the speedo accurate and also the tacho (if there is one)?
Here’s the [document|27014] section from the ''1999-2005 Jetta service and repair manual'', that may help. [br]
It details how to test the oil pressure warning system.
Just wondering if the pressure switch wire is earthed somewhere.
Looking at the manual when testing the pressure switch warning system, the lead is disconnected from the switch and an earth is placed on the lead. It says that the warning light should flash and a buzzer should beep 3 times. Not sure if this means that the light should also only flash 3 times or only the buzzer beeps 3 times and the light continues to flash. If you leave the wire disconnected from the pressure switch with no earth lead connected to it then the warning light should not come on. If it does it sort of proves there is a problem on the wire .
+
+
=== Update (03/21/2022) ===
+
+
Hi,
+
+
Here's the wiring diagram fro the oil warning light circuit that may help if ti comes down to tracing out the circuit.
+
+
As noted earlier the rpm seems to be tied in with the oil warning light.
+
+
The wiring diagram shows the VSS sensor in the same circuit so its input to the instrument cluster control module must be used in conjunction with the oil sensor. Hopefully the module is not faulty as far as the oil warning light goes. Is the speedo accurate and also the tacho (if there is one)?
Here’s the [document|27014] section from the ''1999-2005 Jetta service and repair manual'', that may help. [br]
It details how to test the oil pressure warning system.
-
Just wondering if the pressure switch wire is earthed somewhere. Looking at the manual when testing the pressure switch warning system, the lead is disconnected from the switch and an earth is placed on the lead. It says that the warning light should flash and a buzzer should beep 3 times. Not sure if this means that the light should also only flash 3 times or only the buzzer beeps 3 times and the light continues to flash.
+
Just wondering if the pressure switch wire is earthed somewhere.
+
+
Looking at the manual when testing the pressure switch warning system, the lead is disconnected from the switch and an earth is placed on the lead. It says that the warning light should flash and a buzzer should beep 3 times. Not sure if this means that the light should also only flash 3 times or only the buzzer beeps 3 times and the light continues to flash. If you leave the wire disconnected from the pressure switch with no earth lead connected to it then the warning light should not come on. If it does it sort of proves there is a problem on the wire .
Here’s the [document|27014] section from the ''1999-2005 Jetta service and repair manual'', that may help. [br]
It details how to test the oil pressure warning system.
+
+
Just wondering if the pressure switch wire is earthed somewhere. Looking at the manual when testing the pressure switch warning system, the lead is disconnected from the switch and an earth is placed on the lead. It says that the warning light should flash and a buzzer should beep 3 times. Not sure if this means that the light should also only flash 3 times or only the buzzer beeps 3 times and the light continues to flash.
Hi,
Here’s some images from the 1999-2005 Jetta service manual, that may help to find out what’s wrong.
[image|2607650]
[image|2607648]
[image|2607649]
[image|2607647]
(click on images to enlarge)