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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 262 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTCS Not Displayed, DTCS Continuously Displayed >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Toyota Matrix and 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to ON position. Measure voltage between DLC3 terminals Tc and CG. See Figure. If 10-14 volts is present, go to next step. If 10-14 volts is not present, repair or replace wire harness between DLC3 and air bag sensor assembly. See WIRING DIAGRAMS .
  2. Measure voltage between ground and DLC3 terminal Tc. If 10-14 volts is present, go to next step. If 10-14 volts is not present, repair or replace wire harness between DLC3 and air bag sensor assembly.
  3. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Measure resistance between DLC3 terminals Tc and CG. If resistance is more than one megohm, replace air bag sensor assembly. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. If resistance is less than one megohm, repair or replace wire harness between DLC3 and air bag sensor assembly.
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