Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Use a 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 2 | Go to Step 3 |
2 | Inspect for 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 7 |
3 | Does the instrument cluster display work? | -- | Go to Step 4 | Go to Step 5 |
4 | Repair a poor connection or open in circuit 451 between the DLC and S215. Has the repair been made? | -- | -- | |
5 | Repair a poor connection or open in circuit 451 between S215 and G110 . Has the repair been made? | -- | Go to Step 19 | -- |
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 8 | Go to Step 9 |
7 | Repair the poor connection between the DLC and the scan tool. Is the repair complete? | -- | Go to Step 19 | -- |
8 |
Can the scan tool communicate with the PCM? | -- | Go to Step 10 | Go to Step 11 |
9 | Determine if the scan tool is malfunctioning. Refer to the scan tool instruction manual for additional information. Is the action complete? | -- | Go to Step 19 | -- |
10 | 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 800. Repair as necessary. Is the action complete? | -- | Go to Step 19 | -- |
11 |
Is the resistance the same as the specified value? | Infinite | Go to Step 12 | Go to Step 13 |
12 |
Is the voltage within the specified value? | Less than 1 V | Go to Step 14 | Go to Step 15 |
13 | Repair the short to ground in CKT 800. Is the repair complete? | -- | Go to Step 19 | -- |
14 | Check continuity between DLC terminal 9 and the PCM connector C1 terminal 15 (V6 VIN K) or connector C2 terminal 3 (V8 VIN G) Is there continuity? | -- | Go to Step 16 | Go to Step 17 |
15 |
Is the repair complete? | -- | Go to Step 19 | -- |
16 |
Is a short to ground present? | -- | Refer to PCM | Go to Step 18 |
17 | Repair the poor connection or an open in CKT 800. Is the repair complete? | -- | Go to Step 19 | -- |
18 |
Is a short to ground present? | -- | Refer to EBCM | Refer SIR |
19 |
Is the action complete? | -- | -- |
