DTC 3: Power Supply Of SAS Control Module
WARNING: This page is about a different car, the 2002 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This DTC can indicate a weak battery, open or short in wiring harness, poor connection of connector.
- Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Measure battery voltage. If battery voltage is more than 9 volts, go to next step. If battery voltage is less than 9 volts, check for weak battery or charging system malfunction. Repair as necessary. Go to step 4.
- Access joint box (fuse block) located under left side of instrument panel. Remove METER and ENGINE fuses. Turn ignition on. Measure voltage between ground and joint box connector JB-02, terminal "C". See Fig 1. If voltage is more than 9 volts, go to next step. If voltage is less than 9 volts, replace wiring harness. Go to step 4.
- Turn ignition off. Install METER and ENGINE fuses. Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM. Connect negative battery cable. Turn ignition on. Measure voltage between ground and SAS control module connector terminals No. 2E (Black/Yellow wire) and No. 2H (Black/White wire). If voltage is more than 9 volts and this is a present DTC, replace SAS control module. See SAS CONTROL MODULE under REMOVAL & INSTALLATION. Go to next step. If voltage is more than 9 volts and this is a past DTC, test is complete. Go to next step. If voltage is less than 9 volts, replace wiring harness. Go to next step.
- Reconnect all connectors. Activate air bag system. See ACTIVATING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM. Perform SYSTEM OPERATION CHECK . Ensure AIR BAG warning light is operating properly. If not, reconfirm malfunction symptoms.