Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the System Check? | -- | Go to Step 2 | |
2 | Attempt to establish communication with the same system on a different vehicle. Are you able to establish communication? | -- | Go to Step 3 | Go to Step 4 |
3 |
Is the connection good? | -- | Go to Step 5 | Go to Step 6 |
4 | The scan tool may be malfunctioning. Refer to Scan Tool Instruction Manual. Is the repair complete? | -- | -- | |
5 | Measure the resistance of the data link connector (DLC-OBD II) from terminal 9 to terminal 5. Does the J 39200 display OL? | -- | Go to Step 7 | Go to Step 8 |
6 | Repair the data link connector terminal 9 or reconnect the scan tool as necessary. Is the repair complete? | -- | -- | |
7 | Measure the voltage of the data link connector (DLC-OBD II) from terminal 9 to terminal 5. Did you measure any voltage? | -- | Go to Step 10 | Go to Step 9 |
8 | Repair a short to ground in the PPL/WHT wire between the following components:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
9 | Measure the voltage on the data link connector (DLC-OBD II) from terminal 16 to ground. Did you measure the system voltage? | -- | Go to Step 11 | Go to Step 12 |
10 | Repair a short to voltage in the PPL/WHT wire between the following components:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
11 |
Is the repair complete? | -- | -- | |
12 | Repair the open in the WHT wire between fuse block 2 and the data link connnector (DLC-OBD II). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
