Component Tests and General Diagnostics

Checking The Supply Voltage/Ground Terminal, Global Positioning System Module (GPS)

Checking the power supply and ground terminals Power supply, global positioning system module (GPS)





The global positioning system module (GPS) is powered via a power input on the control module.

1. The power input terminal #1 (#B1) is powered via a fuse from the central electronic module (CEM). It will not be possible to activate the global positioning system module (GPS) if there is an open-circuit.

Checking the power supply
Check the power supply cable from the battery to the central electronic module (CEM) and from the central electronic module (CEM) to global positioning system module (GPS) terminal #1 (#B1). Check for an open circuit. Check for loose connections. Check for contact resistance. Check for oxidation. Check the fuse. The voltage must be approximately battery voltage when the ignition is on.

Ground terminal, global positioning system module (GPS)
The global positioning system module (GPS) has a ground input. The ground input from the control module is connected via a ground lead to the ground terminal in the car body.

- Ground input terminal 1 (#B1) is power ground and is connected to the ground terminal in the car body.

Checking the ground terminal
Check the ground lead between global positioning system module (GPS) (#B1) and the ground terminal. Check for an open-circuit. Check for loose connections. Check for contact resistance. Check for oxidation. With the ignition on, the drop in voltage between the ground connection for the media player module (MPM) and the ground terminal must not be greater than 0.5 V.

Remedy as necessary.

Other information
- Signal specification
- Checking wiring and terminals

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