Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Data Link Communications System Check? | -- | Go to Step 2 | |
2 | Use a J 39200 Digital Multimeter (DMM) in order to measure the voltage between the Data Link Connector DLC terminal 16 and the ground. Is the voltage within the specified range? | B+ (9-14 V) | Go to Step 3 | Go to Step 17 |
3 | Use a J 39200 DMM in order to measure the voltage between B+ and DLC terminal 5. Is the voltage within the specified range? | B+ (9-14 V) | Go to Step 4 | Go to Step 18 |
4 | Use a J 39200 DMM in order to measure the voltage between B+ and DLC terminal 4. Is the voltage within the specified range? | B+ (9-14 V) | Go to Step 5 | Go to Step 23 |
5 | Inspect for a proper connection of the Scan Tool to the DLC. Is the connection OK between the Scan Tool and the DLC? | -- | Go to Step 6 | Go to Step 10 |
6 | Use the Scan Tool in order to establish communication with the PCM on a different vehicle. Can communication be established with the Scan Tool ? | -- | Go to Step 7 | Go to Step 11 |
7 |
Can the Scan Tool communicate with the PCM? | -- | Go to Step 12 | Go to Step 8 |
8 |
Is the resistance the same as the specified value? | ∞ | Go to Step 9 | Go to Step 13 |
9 |
Is the voltage less than the specified value? | 1 V | Go to Step 15 | Go to Step 14 |
10 | Repair the poor connection between the DLC and the Scan Tool . Is the repair complete? | -- | Go to Step 16 | -- |
11 | Determine if the Scan Tool is malfunctioning. Refer to the scan tool instruction manual for additional information. Is the action complete? | -- | Go to Step 16 | -- |
12 | If malfunction is not present or intermittent, inspect the PCM, SDM, and EBCM connectors for a poor connection, short to B+, or short to ground in CKT 1807. Repair as necessary. Is the action complete? | -- | Go to Step 16 | -- |
13 | Repair the short to ground in CKT 1807. Is the repair complete? | -- | Go to Step 16 | -- |
14 |
Is the repair complete? | -- | Go to Step 16 | -- |
15 | Check continuity in CKT 1807 between the DLC terminal 2 and the PCM connector C1 terminal 59. Is there continuity? | -- | Refer to Data Link Connector Diagnosis in Engine Controls 3.1 or Data Link Connector Diagnosis in Engine Controls 3.8 | Go to Step 25 |
16 |
Is the action complete? | -- | -- | |
17 | Does the radio work? | -- | Go to Step 19 | Go to Step 20 |
18 | Does the instrument cluster display work? | -- | Go to Step 23 | Go to Step 24 |
19 | Repair a poor connection or an open in CKT 640 between the DLC terminal 16 and S202. Has the repair been made? | -- | Go to Step 16 | -- |
20 | Check for fuse 10 for an open. Is fuse 10 OK? | -- | Go to Step 21 | Go to Step 22 |
21 | Repair a poor connection or an open in CKT 640 between the fuse block and S202. Has the repair been made? | -- | Go to Step 16 | -- |
22 | Replace fuse 10. Has the repair been made? | -- | Go to Step 16 | -- |
23 | Repair the poor connection or open in CKT 1550 between the DLC and S211. Has the repair been made? | -- | Go to Step 16 | -- |
24 | Repair the poor connection or open in CKT 1550 between S211 and G201. Has the repair been made? | -- | Go to Step 16 | -- |
25 | Repair the poor connection or an open in CKT 1807. Is the repair complete? | -- | Go to Step 16 | -- |
