Inspection Procedure: Procedure

WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Main Body / Active Test.

Check the operation.

MAIN BODY (MAIN BODY ECU)

Tester Display	Test Part	Control Range	Diagnostic Note
Indicator for Lighting	Engine switch illumination (All doors are closed)	ON/OFF	-

Engine switch illumination comes on.

NG → See step 2

OK → See step 4

INSPECT ENGINE SWITCH
1. Remove the engine switch.
  
  Fig 1: Identifying Engine Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect a (+) lead from the battery to terminal 11 and a (-) lead to terminal 4 or 5.
3. Check that the illumination comes on.
  OK
  
  Engine switch illumination comes on.
NG → REPLACE ENGINE SWITCH

OK: Go to next step

CHECK HARNESS OR CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND)

Disconnect the E51 main body ECU connector.

Fig 2: E51 Main Body ECU And E38 Engine Switch Connector Terminals Identification
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the E38 engine switch connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
E38-11 (SWIL) - E51-8 (SWIL)	Always	Below 1 Ω
E38-4 (COM) or E38-5 (GND) - Body ground	Always	Below 1 Ω
E51-8 (SWIL) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE