Conditions for Clearing the DTC
- The VCIM detects the presence of a navigation antenna.
- A history DTC clears after 50 malfunction-free ignition cycles.
- The VCIM receives the clear DTC command from the scan tool.
DTC B2483 or B2484
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: OnStar Schematics Connector End View Reference: Cellular Communication Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
NOTE:
Using a DMM to measure the resistance of the navigation antenna coax from the center conductor to the outer shield while the antenna is still connected will damage the navigation antenna.
|
- | Go to Step 3 | Go to Step 4 |
| 3 | Measure the resistance of the navigation antenna coax center conductor from end to end. Does the resistance measure greater than the specified value? |
1 Ω | Go to Step 4 | Go to Step 5 |
| 4 | Replace the navigation antenna coax. Did you complete the replacement? |
- | Go to Step 7 | - |
| 5 | Inspect for poor connections at the navigation antenna and the harness connector of the VCIM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 7 | Go to Step 6 |
| 6 | Replace the navigation antenna. Refer to Antenna Assembly Replacement - Cellular and Navigation . Is the repair complete? |
- | Go to Step 7 | - |
| 7 |
|
- | Go to Step 8 | System OK |
| 8 |
IMPORTANT:
Perform the OnStar® setup procedure. Replace the VICM. Refer to Communication Interface Module Replacement .
|
- | Go to Step 2 | - |