For 1990-2009 cars only
Data
Two communication lines are used to monitor the modules for diagnostic purposes and to inspect for Diagnostic Trouble Codes (DTCs):
| • | The scan tool accesses the PCM through CKT 1807 (PPL). |
| • | The scan tool accesses the EBCM through CKT 799 (TAN/WHT). |
Power
Voltage is applied at all times to the DLC through DATA Fuse 21, by CKT 1340 (ORN).
Ground
The DLC is permanently grounded by two circuits:
| • | Signal ground by CKT 451(BLK/WHT) to G102 |
| • | Power ground by CKT 150 (BLK) to G200 |
