Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the DLC System Check performed? | -- | Go to Step 2 | |
2 | May the scan tool be powered up? | -- | Go to Step 10 | Go to Step 3 |
3 |
Inspect with known good male terminal from J-38125 repair kit. Is the connection good? | -- | Go to Step 4 | Go to Step 6 |
4 | Measure voltage from terminal 16 of the DLC to ground. Does voltage equal the specified value? | B+ | Go to Step 5 | Go to Step 8 |
5 | Measure the voltage from terminal 16 to terminal 4 of the DLC. Is the voltage within the specified range? | B+ | Go to Step 7 | Go to Step 9 |
6 | Repair the connection as needed. Is the repair complete? | -- | Go to Step 3 | |
7 | Inspect the scan tool for a malfunction. Refer to the Scan Tool instruction manual. Has a properly operating scan tool been obtained? | -- | Go to Step 2 | -- |
8 | Repair an open in CKT 640 (ORN). Is the repair complete? | -- | -- | |
9 | Repair an open in CKT 1850 (BLK). Is the repair complete? | -- | -- | |
10 |
If you use a Tech 2, use the Diagnostic Circuit Check Class 2 Message Monitor CLASS 2 MESSAGE MONITOR feature in order to obtain this information. Are any of the modules on the Class 2 data link communicating? | -- | Go to Step 11 | Go to Step 14 |
11 | Is DTC U1000 or DTC U1xxx (lost communications with xxx) set in the modules that will communicate? | -- | Go to Step 12 | Go to Step 13 |
12 | Use the CLASS 2 LOST COMMUNICATIONS WITH XXX (U1000) procedures, as appropriate, in order to diagnose the malfunction Is the procedure complete? | -- | -- | |
13 | Use the CLASS 2 LOST COMMUNICATIONS WITH XXX (U1XXX) procedures in order to diagnose the malfunction for the module which is not communicating. Is the procedure complete? | -- | -- | |
14 |
Inspect with known good male terminal from repair kit J-38125. Is the connection good? | -- | Go to Step 15 | Go to Step 6 |
15 | Measure the resistance from terminal 16 to terminal 5 of the DLC. Is the resistance within the specified range? | 0-5 ohms | Go to Step 16 | Go to Step 31 |
16 | Check for proper connection of the scan tool to the data link connector at terminal 2. Inspect with known good male terminal from repair kit J-38125. Is the connection good? | -- | Go to Step 17 | Go to Step 6 |
17 |
Is the connection good? | -- | Go to Step 18 | Go to Step 6 |
18 | Measure the resistance from terminal 2 of the DLC to terminal A of the splice pack. Is the resistance within the specified range? | 0-5 ohms | Go to Step 19 | Go to Step 30 |
19 | Measure the resistance on the DLC from terminal 2 to terminal 4 with splice pack SP201 connected. Is the resistance as specified? | OL (Infinite) | Go to Step 20 | Go to Step 21 |
20 |
The top of the meter display should read 1ms RECORD MAX. Is the MAX voltage within the specified range? | 5-8 V | Go to Step 21 | Go to Step 27 |
21 |
May communication be established? | -- | Go to Step 22 | Go to Step 23 |
22 | Repeat step 20 for each module on the Class 2 serial data link. May communication be established for each module on the Class 2 serial data link? | -- | Go to Step 32 | Go to Step 23 |
23 |
Is the resistance as specified? | OL (Infinite) | Go to Step 24 | Go to Step 29 |
24 |
Is the voltage within the specified range? | 0-1 V fluctuating | Go to Step 25 | Go to Step 28 |
25 |
Are all terminals properly locked in to the connector body? | -- | Go to Step 26 | Go to Step 6 |
26 |
Refer to the appropriate on-vehicle service procedures for the module being replaced in order to ensure a complete repair. May communications be established? | -- | Go to Step 32 | Go to Step 27 |
27 | Replace the Class 2 serial data circuit wire between the splice pack SP 201 and the module that does not communicate. Is the repair complete? | -- | Go to Step 32 | -- |
28 |
Is the repair complete? | -- | Go to Step 32 | -- |
29 | Repair the short to ground in the Class 2 serial data circuit. Is the repair complete? | -- | Go to Step 32 | -- |
30 | Repair the open in the Class 2 serial data circuit. Is the repair complete? | -- | -- | |
31 | Repair the open in CKT 451. Is the repair complete? | -- | -- | |
32 |
Do any DTCs exist that begin with a U set with a current status? | -- | Go to Step 34 | Go to Step 33 |
33 | Are any DTCs set that do not begin with a U? | -- | Go to Step 34 | Go to Step 35 |
34 | Diagnose the DTCs as directed by the diagnostic procedures for the particular module or malfunction. Is the procedure complete? | -- | Go to Step 35 | -- |
35 | Have all DTCs been diagnosed? | -- | Go to Step 36 | Go to Step 34 |
36 | Clear all of the DTCs. Is the repair complete? | -- | System OK | -- |
