VUE AWD V6-3.5L VIN 4 (2004)
DTC B2476 04: Cellular Phone Select Service Switch Open Circuit
DTC B2476 59: Cellular Phone Select Service Switch Stuck Button
DTC B2482 00: Cellular Phone Select Service Switch Range/Performance
Circuit Short to Ground Open / High Resistance Short to Voltage Signal Performance
Circuit/System Description
The OnStar(R) button assembly consists of 3 buttons, Call/Answer, OnStar(R) Call Center, and OnStar(R) Emergency.
The vehicle communication interface module (VCIM) supplies the OnStar(R) button assembly with 10 volts via the keypad supply voltage circuit. Each
of the buttons, when pressed, completes the circuit across a resistor allowing a specific voltage to be returned to the VCIM over the keypad signal circuit.
Depending upon the voltage range returned, the VCIM is able to identify which button has been activated.
Conditions for Running the DTCs
The ignition is ON.
System voltage is between 9 - 16 volts.
Conditions for Setting the DTCs
B2476 04: The VCIM detects an open/high resistance on the keypad supply voltage circuit.
B2482 and B2476 59: The VCIM detects a valid signal on the keypad signal circuit for more than 15 seconds. If one of the OnStar(R) buttons is held or
stuck for 15 seconds or more, the VCIM will set these DTCs.
Action Taken When the DTCs Set
The OnStar(R) status LED turns red.
No calls can be placed.
The VCIM will ignore all inputs from the OnStar® button assembly.
Conditions for Clearing the DTCs
The condition responsible for setting the DTC no longer exists.
A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
