Test Description
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 2: Early design modules support the mV reading while later design modules support the mA reading.
- 3: Due to current limiting capabilities in the module, an antenna cable shorted to ground could still show 1 200-1 800 mV.
DTC B1259: Antenna Ground Circuit
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Radio/Audio System Schematics Connector End Views Reference: Entertainment 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 | With a scan tool, observe the digital radio antenna in the digital radio receiver data list. Does the scan tool indicate that the digital radio antenna is within the specified range? |
1 200-1 800 mV or 42-118 mA | Go to Step 3 | Go to Step 4 |
| 3 | Test the antenna cables for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 8 |
| 4 |
|
4.5-5.5 V | Go to Step 5 | Go to Step 6 |
| 5 | Test the antenna cables for an open or a high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 8 |
| 6 | Inspect for poor connections at the digital radio receiver. 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 10 | Go to Step 7 |
| 7 | Replace the digital radio receiver. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 10 | - |
| 8 | Inspect for poor connections at the digital radio antenna. 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 10 | Go to Step 9 |
| 9 | Replace the digital radio antenna. Refer to Antenna Replacement - Digital Radio . Did you complete the replacement? |
- | Go to Step 10 | - |
| 10 |
|
- | Go to Step 2 | System OK |