DTC B2485
Diagnostic Instructions
DTC Descriptors
| DTC B2485 02: Wireless Communication Antenna
Circuit Short to Ground |
| DTC B2485 04: Wireless Communication Antenna
Circuit Open |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Signal
|
B2485 02
|
B2485 04
|
-
|
-
|
|
| |
Circuit/System Description
The Bluetooth antenna is a small fixed antenna connected
directly to the mobile telephone control module and is used to send
and receive signals from a Bluetooth enabled cellular phone. The
antenna is external to the vehicle.
Conditions for Running the DTC
| • |
The ignition is in OFF,
ACCESSORY or RUN position. |
| • |
The system voltage is between
9-16 V |
| • |
The mobile telephone control
module tests the antenna once every second |
Conditions for Setting the DTC
B2485 02
| • |
The signal voltage is less
than 1 V. |
| • |
The above conditions must be
met for 500 ms. |
B2485 04
| • |
The signal voltage is greater
than 2 V. |
| • |
The above conditions must be
met for 500 ms. |
Action Taken When the DTC Sets
The Bluetooth communication can not be establish.
Conditions for Clearing the DTC
The DTC will become history when the condition for setting the
DTC is no longer present.
Reference Information
Schematic Reference
Cellular Telephone Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Cellular Telephone Description and Operation
Electrical Information Reference
Circuit/System Testing
| 1. |
Replace the T4S Wireless
Communication Antenna. |
| 2. |
Clear the DTCs and operate the
vehicle within the conditions for running the DTC. Verify DTC B2485
does not set. |
| ⇒ |
If the DTC sets, replace the K82 Mobile Telephone
Control Module. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for mobile telephone control module
replacement, setup, and programming
|
