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Here's the start how to check
APP Sensor Assembly Connector Pin outs
Pin
Wire Color
Description
A Gray APP Sensor 3 -Ground
B Purple APP Sensor 2 -Ground
C Light Blue APP Sensor 2 -Signal
D Tan APP Sensor 2 -5 Volt Reference Circuit
E Yellow w/ Black stripe (or Brown) APP Sensor 1 -Reference Low (Ground) Circuit
F Dark Blue APP Sensor 1 -Signal
G White w/ Black stripe APP Sensor 1 -5 Volt Reference Circuit
J Brown (or Yellow w/ Black stripe) APP Sensor 1 -Ground
K Dark Green APP Sensor 3 -Signal
OK, this is what you need to do:
1.Disconnect the Battery's Negative Terminal.
2.Disconnect the 6 (or 9) wire connector from the APP Sensor Assembly.
3.Remove the APP Sensor Assembly by removing the bolts that attach it to the vehicle.
4.Set your Multimeter's dial on Ohm's mode (Ω) and locate metal pins G and F. Once you've identified them: •Connect the Red Multimeter Lead to pin G (this is the 5 Volt Reference circuit).
•Connect the Black Multimeter Lead to pin F (this is the APP 1 Signal circuit).
•If all is OK up until this point, your Multimeter should register about: 5.04 K Ω.
•To attach the Multimeter Lead to the pins and then actuate the pedal... you're gonna' need to use alligator clips (you can buy these at your local Radio Shack or electronics store).
5.Now, manually depress and release the pedal (slowly) while you eye-ball your Multimeter. •When the pedal is fully depressed, your Multimeter should register about 2.99 to 3.03 K Ω.
•Repeat the process several times, taking note of the sweep of the needle (Analog Multimeter) or sweep of the bar graph (Digital Multimeter with bar graph).
•If all is OK, the needle (or bar graph) will move up and down very smoothly (fluidly) without gaps or jerky
1.Place your Multimeter in Volts DC mode.
2.With the Black Multimeter lead, probe the wire identified with the letter E in the photo below. •This is usually a Brown colored wire of the connector.
•Note: If the wire is a different color, identify the wire by the letter that's embossed on the connector.
3.Connect the Red Multimeter lead directly on the Battery's Positive Terminal using a Battery Jump Start Cable. •NOTE: The jumper cable will be 'live' with 12 Volts... so be careful and wrap the jumper cable end (that you've brought into the vehicle) in a shop towel or plastic bag. This will keep it from shorting to any metal surface.
4.Have a helper turn the Key On, but don't crank or start the Engine.
5.If all is OK, your Multimeter should register 10 to 12 Volts
APP Sensor Assembly Connector Pin outs
Pin
Wire Color
Description
A Gray APP Sensor 3 -Ground
B Purple APP Sensor 2 -Ground
C Light Blue APP Sensor 2 -Signal
D Tan APP Sensor 2 -5 Volt Reference Circuit
E Yellow w/ Black stripe (or Brown) APP Sensor 1 -Reference Low (Ground) Circuit
F Dark Blue APP Sensor 1 -Signal
G White w/ Black stripe APP Sensor 1 -5 Volt Reference Circuit
J Brown (or Yellow w/ Black stripe) APP Sensor 1 -Ground
K Dark Green APP Sensor 3 -Signal
OK, this is what you need to do:
1.Disconnect the Battery's Negative Terminal.
2.Disconnect the 6 (or 9) wire connector from the APP Sensor Assembly.
3.Remove the APP Sensor Assembly by removing the bolts that attach it to the vehicle.
4.Set your Multimeter's dial on Ohm's mode (Ω) and locate metal pins G and F. Once you've identified them: •Connect the Red Multimeter Lead to pin G (this is the 5 Volt Reference circuit).
•Connect the Black Multimeter Lead to pin F (this is the APP 1 Signal circuit).
•If all is OK up until this point, your Multimeter should register about: 5.04 K Ω.
•To attach the Multimeter Lead to the pins and then actuate the pedal... you're gonna' need to use alligator clips (you can buy these at your local Radio Shack or electronics store).
5.Now, manually depress and release the pedal (slowly) while you eye-ball your Multimeter. •When the pedal is fully depressed, your Multimeter should register about 2.99 to 3.03 K Ω.
•Repeat the process several times, taking note of the sweep of the needle (Analog Multimeter) or sweep of the bar graph (Digital Multimeter with bar graph).
•If all is OK, the needle (or bar graph) will move up and down very smoothly (fluidly) without gaps or jerky
1.Place your Multimeter in Volts DC mode.
2.With the Black Multimeter lead, probe the wire identified with the letter E in the photo below. •This is usually a Brown colored wire of the connector.
•Note: If the wire is a different color, identify the wire by the letter that's embossed on the connector.
3.Connect the Red Multimeter lead directly on the Battery's Positive Terminal using a Battery Jump Start Cable. •NOTE: The jumper cable will be 'live' with 12 Volts... so be careful and wrap the jumper cable end (that you've brought into the vehicle) in a shop towel or plastic bag. This will keep it from shorting to any metal surface.
4.Have a helper turn the Key On, but don't crank or start the Engine.
5.If all is OK, your Multimeter should register 10 to 12 Volts