Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminals Tc and E1 of DLC1 or Tc and CG of DLC3.
Check:
1. Turn the ignition switch ON.
2. Measure voltage between terminals Tc and E1 of the DLC1 or Tc and CG of the DLC3.
OK: Voltage: 10-14 V.

Fig 1: Testing Voltage DLC1 Tc To E1 Or DLC3 Tc To CG Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: If each warning light does not blink even after Tc and E1 or Tc and CG are connected, the ECU may be defective.

If NG , go to step 2.
Check for open and short circuit in harness and connector between ABS & BA & TRAC & VSC ECU and DLC3 or DLC1, DLC3 or DLC1 and body ground . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .

NG: Repair or replace harness or connector.

OK: Check and replace ABS & BA & TRAC & VSC ECU.