Up to 08/2009
DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Only Back Door cannot be Opened
- Only Back Door cannot be Opened
DESCRIPTION
* The main body ECU (multiplex network body ECU) detects the condition of the back door opener switch assembly.
* The certification ECU (smart key ECU assembly) receives signals from the back door opener switch assembly and activates the back door lock motor according to the signals.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
The power door lock control system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure How To Proceed With Troubleshooting.
PROCEDURE
1. CHECK POWER DOOR LOCK OPERATION (BASIC FUNCTION)
(a) Check the power door lock basic function Operation Check.
OK:
The power door lock basic functions operate normally.
NG -- GO TO PROBLEM SYMPTOMS TABLE Problem Symptoms Table
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM (DOOR LOCK STATUS)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Main Body (Main Body ECU (Multiplex Network Body ECU))
OK:
The Techstream indicates Permit or Prohibit according to the door lock operation shown in the table.
NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
OK -- Continue to next step.
3. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Main Body (Main Body ECU (Multiplex Network Body ECU))
OK:
The back door lock assembly unlatches when ON is selected.
NG -- INSPECT BACK DOOR LOCK ASSEMBLY
OK -- Continue to next step.
4. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Access / Data List.
(e) Read the Data List according to the display on the Techstream.
Smart Access (Certification ECU (Smart Key ECU Assembly))
OK:
The Techstream indicates ON or OFF according to the switch operation shown in the table.
NG -- INSPECT BACK DOOR OPENER SWITCH ASSEMBLY
OK -- Continue to next step.
5. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Replace the main body ECU (multiplex network body ECU) Removal.
NEXT -- Continue to next step.
6. CHECK DOOR LOCK OPERATION (BACK DOOR)
(a) Check that the back door can be opened.
OK:
The back door can be opened normally.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
OK -- END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)
7. INSPECT BACK DOOR LOCK ASSEMBLY
(a) Remove the back door lock assembly Removal.
(b) Check the operation of the door lock motor.
(1) Move the door lock to the lock position.
(2) Apply battery voltage to the door lock motor and check the operation of the door lock motor.
(c) Check the operation of the door courtesy switch.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE BACK DOOR LOCK ASSEMBLY Removal
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU)
(a) Disconnect the F13 main body ECU connector.
(b) Disconnect the 2H instrument panel junction block connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(a) Replace the instrument panel junction block assembly.
NEXT -- Continue to next step.
10. CHECK DOOR LOCK OPERATION (BACK DOOR)
(a) Check that the back door can be opened.
OK:
The back door can be opened normally.
NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
OK -- END (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WAS DEFECTIVE)
11. INSPECT BACK DOOR OPENER SWITCH ASSEMBLY
(a) Remove the back door opener switch Removal.
(b) Check the operation of the opener switch.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE BACK DOOR OPENER SWITCH ASSEMBLY Removal
OK -- Continue to next step.
12. CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH ASSEMBLY - CERTIFICATION ECU)
(a) Disconnect the F58 certification ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal