Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream ON.
3. By following the Techstream screen display, check whether any DTCs are output.

OK: No DTC output. 

Result 

B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

C: Go to DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

A: Go to next step 

1. Check that all the doors unlock when the door control switch (for manual operation) is turned to LOCK and UNLOCK.

OK: All doors can be lock and unlocked with door control switch. 

NG: Go to POWER DOOR LOCK CONTROL SYSTEM  (See OPERATION CHECK )

OK: Go to next step 

1. Check that the wireless door lock and unlock functions operate normally (see OPERATION CHECK ).

OK: Wireless door lock and unlock functions operate normally. 

NG: Go to WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key System)  (See OPERATION CHECK )

OK: Go to next step 

1. Check the Data List for proper functioning of the door lock switch.

Smart Key 

OK: On Techstream screen, item changes between ON and OFF according to above chart. 

NG: Go to step  6

OK: Go to next step 

1. Temporarily replace the ECU aggregation box (certification ECU) with a new or normally functioning one (see CERTIFICATION ECU (W/ SMART KEY SYSTEM) ).
2. Check that the entry lock and unlock functions operate normally (see OPERATION CHECK ).

OK: Entry lock and unlock functions operate normally. 

NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

OK: END (CERTIFICATION ECU IS DEFECTIVE) 

1. Disconnect the back door outside handle connector.
2. Measure the resistance between the terminal when the lock switch is operated.

Standard resistance 

NG: REPLACE BACK DOOR OUTSIDE HANDLE  (See REMOVAL )

Fig 1: Identifying Back Door Outside Handle Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE HARNESS AND CONNECTOR