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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 76 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC 32/B1140: Right-Side Air Bag Sensor Assembly Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES  under DIAGNOSTICS. If DTC 32/B1140 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 32/B1140 is displayed, go to next step.
  2. Access right-side air bag sensor assembly. See SIDE AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. Ensure right-side air bag sensor assembly harness connector is properly connected and secure. Reconnect if necessary. Go to next step.
  3. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM.
  4. Connect jumper wire between right-side air bag sensor assembly harness connector terminals No. 2 (circuit SSR+, Blue/Yellow wire) and No. 4 (circuit ESR, Gray wire). See WIRING DIAGRAMS . Measure resistance between air bag sensor assembly connector A19, terminals No. 9 (circuit SSR+, Blue/Yellow wire) and No. 10 (circuit ESR, Gray wire). See Figure. If resistance is less than one ohm, go to next step. If resistance is more than one ohm, repair or replace harness or connector between right-side air bag sensor assembly and air bag sensor assembly.
  5. Connect jumper wire between right-side air bag sensor assembly harness connector terminals No. 1 (circuit VUPR, Pink wire) and No. 3 (circuit SSR-, Light Green wire). See WIRING DIAGRAMS . Measure resistance between air bag sensor assembly connector A19, terminals No. 12 (circuit VUPR, Pink wire) and No. 7 (circuit SSR-, Light Green wire). See Figure. If resistance is less than one ohm, remove jumper wire and go to next step. If resistance is more than one ohm, repair or replace harness or connector between right-side air bag sensor assembly and air bag sensor assembly.
  6. Measure resistance between ground and air bag sensor assembly harness connector A19, terminals No. 12 (circuit VUPR, Pink wire), No. 9 (circuit SSR+, Blue/Yellow wire) and No. 7 (circuit SSR-, Light Green wire) individually. See Figure. If resistance is more than one megohm, go to next step. If resistance is less than one megohm, repair or replace harness or connector between right-side air bag sensor assembly and air bag sensor assembly.
  7. Connect negative battery cable. Turn ignition switch to ON position. Measure voltage between ground and air bag sensor assembly harness connector A19, terminals No. 12 (circuit VUPR, Pink wire), No. 9 (circuit SSR+, Blue/Yellow wire), No. 7 (circuit SSR-, Light Green wire) and No. 10 (circuit ESR, Gray wire) individually. See Figure. If voltage is zero volt, turn ignition switch to LOCK position, disconnect negative battery cable and go to next step. If voltage is more than zero volt, repair or replace harness or connector between right-side air bag sensor assembly and air bag sensor assembly. See WIRING DIAGRAMS .
  8. Ensure negative battery cable is disconnected. Reconnect right-side air bag sensor connector. Reconnect air bag sensor assembly connectors A19. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES  under DIAGNOSTICS. If DTC 32/B1140 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 32/B1140 is displayed, go to next step.
  9. Turn ignition switch to LOCK position. Disconnect negative battery terminal. Wait at least 90 seconds. Disconnect right-side air bag sensor connector. Connect right-side air bag sensor connector to left-side air bag sensor. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES  under DIAGNOSTICS. If DTC 32/B1140 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 32/B1140 is displayed, replace air bag sensor assembly.
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