Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 1996 >> Grand Cherokee Orvis >> Repair and Diagnosis >> External Pages >> Different car >> Section 182 (Engine Controls - Tests W/Codes - Body Control Computer) >> Vehicle Communication Tests >> Test 2A - Blank Scan Tool Message Screen

Test 2A - Blank Scan Tool Message Screen

WARNING: This page is about a different car, the 1995 Jeep Wrangler, 1995 Jeep Grand Cherokee, and 1995 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  in this article. For appropriate wiring diagram, see WIRING DIAGRAMS  section at the end of this article. Perform TEST VER-1  after each repair.
  1. Turn ignition off. Disconnect scan tool from Data Link Connector (DLC). Using an external ohmmeter, check for a good ground circuit in DLC. See DATA LINK CONNECTOR POWER & GROUND IDENTIFICATION table. If ground circuit is okay, go to next step. If ground circuit is not okay, repair as necessary. Perform TEST VER-1 .
  2. Turn ignition on. Using an external voltmeter, check for battery voltage in DLC, on wire identified in DATA LINK CONNECTOR POWER & GROUND IDENTIFICATION table. If battery voltage is not present, go to next step. If battery voltage is present, go to step 4).
  3. Check appropriate fuse identified in DATA LINK CONNECTOR FUSE IDENTIFICATION table. If fuse is blown, replace fuse. Perform TEST VER-1 . If fuse is not blown, inspect and repair wiring as necessary. Perform TEST VER-1 .
  4. Try a different scan tool cable. If scan tool screen is no longer blank, replace defective scan tool cable. Perform TEST VER-1 . If scan tool screen is still blank, try a different scan tool. If scan tool screen is no longer blank, replace defective scan tool. Perform TEST VER-1 .
DATA LINK CONNECTOR POWER & GROUND IDENTIFICATION

Model Power Circuit Ground Circuit
Cherokee
PCM DLC Dark Blue/White Black/White
ABS DLC Pink/Light Green Black/Tan
Grand Cherokee
PCM DLC Light Blue/Red Black/Tan
ABS DLC Red/White (1) Black
Wrangler
PCM DLC White/Yellow Black
ABS DLC Pink (2) Black
(1) Alternative color may be Black/Tan.
(2) Black/Tan on 4.0L.
DATA LINK CONNECTOR FUSE IDENTIFICATION

Model Location Fuse
Cherokee
PCM DLC Power Distribution Center No. 11
ABS DLC Power Distribution Center No. 13
Grand Cherokee
PCM DLC Power Distribution Center No. 5
ABS DLC Power Distribution Center No. 13
Wrangler
PCM DLC Fuse Block No. 5
ABS DLC Fuse Block No. 12
scientia non olet · About Mike's Workshop Manuals