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 18 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)TESTING - DIAGNOSTICSIR DIAGNOSTIC SYSTEM CHECKDIAGNOSTIC CHART STEP REFERENCES
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4
Diagnostic Chart Step References
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4SECTION Diagnostic Chart Step References
WARNING: This page is about a different car, the 1998 Pontiac Sunfire and 1998 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Following step references refer to test step numbers on diagnostic chart. See Fig 1
. For circuit number and wire color identification, see WIRING DIAGRAMS
.
- 1
AIR BAG warning light should flash 7 times after ignition switch is turned to RUN position. - 2
AIR BAG warning light indicates improper operation. This test differentiates an warning light stays ON condition from an warning light does not come ON condition. - 3
AIR BAG warning light should flash 7 times and turn OFF. - 4
Checks for proper operation of serial data line. - 6
Identifies stored diagnostic trouble codes and whether they are current or history. - 7
Checks for proper operation of serial data line and identifies any stored history diagnostic trouble codes. - 9
Refers to appropriate DTC Chart Diagnostic Aids for diagnosis of history DTCs.
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.