Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | Was the Data Link Connector System Check performed?  | --  | Go to Step 2  | |
2  | 
 Does the scan tool communicate with the vehicle?  | --  | Go to Step 4  | Go to Step 3  | 
3  | The scan tool may be malfunctioning. Refer to the scan tool instruction manual. Ensure that the scan tool is functioning. Does the scan tool operate properly?  | --  | --  | |
4  | 
 Is the terminal contact between the DLC and the scan tool OK?  | --  | Go to Step 6  | Go to Step 5  | 
5  | Repair the terminal contact at the DLC. Is the repair complete?  | --  | --  | |
6  | Turn the ignition switch to RUN, with the engine OFF. Does the scan tool turn ON?  | --  | Go to Step 13  | Go to Step 7  | 
7  | Measure the voltage between DLC terminal 16 and the chassis ground. Is the voltage within the specified value?  | 10-15 V  | Go to Step 9  | Go to Step 8  | 
8  | Repair the open or the short to ground in CKT 40 (ORN). Is the repair complete?  | --  | --  | |
9  | Measure the voltage from DLC terminal 16 to terminal 5. Is the voltage within the specified range?  | 10-15 V  | Go to Step 11  | Go to Step 10  | 
10  | Repair the open in CKT 451 (BLK/WHT). Is the repair complete?  | --  | --  | |
11  | Repair the open in CKT 1250 (BLK). Is the repair complete?  | --  | --  | |
12  | Measure the voltage from DLC terminal 14 to ground. Is the voltage within the specified value?  | 10-15 V  | Go to Step 15  | Go to Step 13  | 
13  | Measure the resistance from DLC terminal 14 to ground. Is the resistance within the specified range?  | 0-5 ohms  | Go to Step 22  | Go to Step 14  | 
14  | Repair the open in CKT 835 (DK GRN) between DLC terminal 14 and C200 or the heater and the A/C programmer, if equipped. Is the repair complete?  | --  | --  | |
15  | 
 Is the voltage within the specified range?  | 10-15 V  | Go to Step 17  | Go to Step 16  | 
16  | Replace the heater and the A/C control assembly. Is the repair complete?  | --  | --  | |
17  | 
 Is the voltage within the specified value?  | 10-15 V  | Go to Step 19  | Go to Step 18  | 
18  | Replace the radio. Is the repair complete?  | --  | --  | |
19  | 
 Is the voltage within the specified range?  | --  | Go to Step 21  | Go to Step 20  | 
20  | Replace the heater and the A/C programmer. Is the repair complete?  | --  | --  | |
21  | Repair the short to battery positive voltage (B+) in CKT 835 (DK GRN). Is the repair complete?  | --  | --  | |
22  | 
 Is the resistance within the specified range?  | 0-5 ohms  | Go to Step 24  | Go to Step 25  | 
23  | Replace the heater and the A/C control assembly. Is the repair complete?  | --  | --  | |
24  | 
 Is the resistance within the specified range?  | 0-5 ohms  | Go to Step 25  | Go to Step 26  | 
25  | Replace the radio. Is the repair complete?  | --  | --  | |
26  | 
 Is the resistance within the specified range?  | 0-5 ohms  | Go to Step 27  | Go to Step 28  | 
27  | Replace the heater and the A/C programmer. Is the repair complete?  | --  | --  | |
28  | Repair the short to ground in CKT 835 (DK GRN). Is the repair complete?  | --  | --  |