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.
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HOMESERVICE MANUALSMITSUBISHI2004GALANT V6-3.8L (6G75)REPAIR AND DIAGNOSISRESTRAINTS AND SAFETY SYSTEMSRELAYS AND MODULES - RESTRAINTS AND SAFETY SYSTEMSAIR BAG CONTROL MODULESERVICE AND REPAIR
2004 Mitsubishi Galant V6-3.8L (6G75)
Air Bag Control Module: Service and Repair
2004 Mitsubishi Galant V6-3.8L (6G75)SECTION Service and Repair
SRS CONTROL UNIT (SRS-ECU)
REMOVAL AND INSTALLATION
WARNING:
- Never attempt to disassemble or repair the SRS-ECU. If faulty, replace it.
- Do not drop or subject the SRS-ECU to impact or vibration. If denting, cracking, deformation, or rust are discovered in the SRS-ECU, replace it with a new SRS-ECU.
- After deployment of an air bag, replace the SRS-ECU with a new one.
- Never use an Ohmmeter on or near the SRS-ECU, and use only the special test equipment described in Restraint Systems/Air Bag Systems/Tools and Equipment/Test Equipment.
- When removing and installing the front passenger seat, be sure to carry out accuracy check occupant classification sensor after the seat has been installed in the vehicle. (Refer to Air Bag Systems/Seat Occupant Sensor/Testing and Inspection/Procedures/Accuracy Check Of Occupant Classification Sensor.)
REMOVAL SERVICE POINTS
[[A]] NEGATIVE (-) BATTERY CABLE DISCONNECTION
DANGER: Wait at least 60 seconds after disconnecting the battery cable before doing any further work (Refer to Service Precautions).
WARNING: Battery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.
Disconnect the negative battery cable from the battery and tape the terminal to prevent accidental connection and deployment.
[[B]] SRS-ECU REMOVAL
Remove the SRS-ECU with 9.5 (3/8 inch) sq. slide head handle and 9.5 sq. (3/8 inch) socket wrench.
INSTALLATION SERVICE POINTS
]]A[[ SRS-ECU INSTALLATION
WARNING: The SRS may not activate if the SRS-ECU is not installed properly, which could result in serious injury or death to the vehicle's driver or front passenger.
Install the SRS-ECU with 9.5 sq. (3/8 inch) slide head handle and 9.5 sq. (3/8 inch) socket wrench.
]]B[[ POST-INSTALLATION INSPECTION
1. Reconnect the negative (-) battery cable.
2. Turn the ignition switch to the "ON" position.
3. Does the "SRS" warning light illuminate for approximately seven seconds, and then go out?
4. If yes, the SRS system is functioning properly. If not, refer to Supplemental Inflatable Restraint Lamp/Indicator/Testing and Inspection/Procedures/SRS Warning Light Check.
REMOVAL AND INSTALLATION
WARNING:
- Never attempt to disassemble or repair the SRS-ECU. If faulty, replace it.
- Do not drop or subject the SRS-ECU to impact or vibration. If denting, cracking, deformation, or rust are discovered in the SRS-ECU, replace it with a new SRS-ECU.
- After deployment of an air bag, replace the SRS-ECU with a new one.
- Never use an Ohmmeter on or near the SRS-ECU, and use only the special test equipment described in Restraint Systems/Air Bag Systems/Tools and Equipment/Test Equipment.
- When removing and installing the front passenger seat, be sure to carry out accuracy check occupant classification sensor after the seat has been installed in the vehicle. (Refer to Air Bag Systems/Seat Occupant Sensor/Testing and Inspection/Procedures/Accuracy Check Of Occupant Classification Sensor.)
REMOVAL SERVICE POINTS
[[A]] NEGATIVE (-) BATTERY CABLE DISCONNECTION
DANGER: Wait at least 60 seconds after disconnecting the battery cable before doing any further work (Refer to Service Precautions).
WARNING: Battery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.
Disconnect the negative battery cable from the battery and tape the terminal to prevent accidental connection and deployment.
[[B]] SRS-ECU REMOVAL
Remove the SRS-ECU with 9.5 (3/8 inch) sq. slide head handle and 9.5 sq. (3/8 inch) socket wrench.
INSTALLATION SERVICE POINTS
]]A[[ SRS-ECU INSTALLATION
WARNING: The SRS may not activate if the SRS-ECU is not installed properly, which could result in serious injury or death to the vehicle's driver or front passenger.
Install the SRS-ECU with 9.5 sq. (3/8 inch) slide head handle and 9.5 sq. (3/8 inch) socket wrench.
]]B[[ POST-INSTALLATION INSPECTION
1. Reconnect the negative (-) battery cable.
2. Turn the ignition switch to the "ON" position.
3. Does the "SRS" warning light illuminate for approximately seven seconds, and then go out?
4. If yes, the SRS system is functioning properly. If not, refer to Supplemental Inflatable Restraint Lamp/Indicator/Testing and Inspection/Procedures/SRS Warning Light Check.
RENDER: 1.0x
NO RELATED
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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.