Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSOLDSMOBILE1998ACHIEVA 3.1 M, 4T40E/MN4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 5 (BODY CONTROL MODULES)SYSTEM TESTSSCAN TOOL INOPERATIVE
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4
Scan Tool Inoperative
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4SECTION Scan Tool Inoperative
WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
- Remove scan tool from Data Link Connector (DLC). Connect test light between ground and DLC terminal No. 16 (Orange wire). See appropriate wiring diagram in DATA LINK CONNECTORS article in WIRING DIAGRAMS. If test light comes on, go to step 3 . If scan tool does not come on, go to next step.
- Repair open in Orange wire between DLC and ground. Reconnect scan tool. If scan tool powers up, go to DATA LINK COMMUNICATIONS DIAGNOSTIC SYSTEM CHECK . If scan tool does not power up, go to next step.
- Connect test light between DLC terminals No. 5 (Black/White wire) and No. 16 (Orange wire). If test light comes on, go to step 5 . If scan tool does not come on, go to next step.
- Repair open in Black/White wire between left instrument panel junction block and DLC. Reconnect scan tool. If scan tool powers up, go to DATA LINK COMMUNICATIONS DIAGNOSTIC SYSTEM CHECK . If scan tool does not power up, go to next step.
- Connect test light between DLC terminals No. 4 (Black wire) and No. 16 (Orange wire). If test light comes on, go to next step. If scan tool does not come on, go to step 7 .
- Scan tool may be inoperative. Check scan tool manufacture's manual. After repairs, go to DATA LINK COMMUNICATIONS DIAGNOSTIC SYSTEM CHECK .
- Repair open in Black wire between DLC and ground. Reconnect scan tool. If scan tool powers up, go to DATA LINK COMMUNICATIONS DIAGNOSTIC SYSTEM CHECK . If scan tool does not power up, go to step 6 .
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.