Test Description
The steps listed below refer to numbers on the following diagnostic chart, no information is missing.
- 1. This step is to determine whether the scan tool can be powered up
- 2. This step is to determine whether the scan tool can be powered up
- 3. This step is to determine if the scan tool can communicate with the UART Data Line, specifically within the Supplemental Inflation Restraint System
DIAGNOSTIC SYSTEM CHECK - DATA LINK COMMUNICATIONS
| Step | Action | Normal Result(s) | Abnormal Result(s)* |
|---|---|---|---|
| 1 | With scan tool connected make contact with any of the modules applicable to the vehicle | Scan Tools main menu. | * Blank Screen * No power to the scan tool Refer to SCAN TOOL INOPERATIVE |
| 2 | Select Diagnostics Circuit Check, Class 2 DTC Check from the scan tools menu. | No DTC's found. | The module(s) listed will have DTC's present. * U1016. Refer to SCAN TOOL WILL NOT COMMUNICATE WITH CLASS 2 DATA LINE * U1255. Refer to SCAN TOOL WILL NOT COMMUNICATE WITH CLASS 2 DATA LINE * No Communication with the vehicle, or Diagnostic Link Connector. Refer to SCAN TOOL WILL NOT COMMUNICATE WITH CLASS 2 DATA LINE |
| 3 | 1. Select Body Diagnostics from the scan tools menu. 2. Select SIR UART Data Line information. 3. Access DTC's using the scan tool. |
No DTC's found. | No communication with the vehicle, or Diagnostic Link Connector. Refer to SCAN TOOL WILL NOT COMMUNICATE WITH CLASS 1 (UART) DATA LINE |
| * Refer to the appropriate symptom diagnostic table for the applicable abnormal result. | |||