Driver Door Control System - Diagnostics: Pre-Check
- DIAGNOSIS SYSTEM
- Description
ECU data of this system can be read from DLC3 of the vehicle.
Therefore, when there seems to be a trouble on this system, use hand-held tester to check and troubleshoot it.
- Check the DLC3.
The vehicle's ECM uses ISO 9141-2 for communication. The terminal arrangement of DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.
TERMINAL CONNECTION SPECIFIED CONDITIONTerminal No. Connection/Specified Condition Condition 4 Chassis Ground <--> Body Ground/1 or less Always 13 TC <--> Body Ground/9 - 14 V Always HINT:
If the display shows "UNABLE TO CONNECT TO VEHICLE" when the cable of the hand-held tester is connected to DLC3, the ignition switch is turned ON and the hand-held tester is connected, there is a problem either on the vehicle side or tool side.
- If communication is normal when the tool is connected to another vehicle, inspect DLC3 on the original vehicle.
- If communication does not function when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department listed in the tool's instruction manual.
- Description
- USING HAND-HELD TESTER
- Hook up the hand-held tester to DLC3.
- Monitor the ECU data by following the prompts on the tester screen.
HINT:
Hand-held tester has a "Snapshot" function which records the monitored data. Refer to the hand-held tester operator's manual for further details.
- DATA LIST
HINT:
By the DATA LIST displayed on the hand-held tester, you can read the value of the switch, sensor, actuator and so on without removing any parts. Reading the DATA LIST as a first step of troubleshooting is one of the method to shorten the labor time.
- Connect the hand-held tester to DLC3.
- Turn the ignition switch ON.
- According to the display on tester, read "DATA LIST".
Power window master switch:
POWER WINDOW MASTER SWITCH - DATA LISTItem Measurement Item/Display (Range) Normal Condition Diagnostic Note P/W AUTO SW D door P/W auto switch ON: D door P/W auto switch is ON position OFF: D door P/W auto switch is OFF position - P P/W AUTO SW P door remote P/W auto switch ON: P door remote P/W auto switch is ON position OFF: P door remote P/W auto switch is OFF position - RR P/W AUTO SW RR door remote P/W auto switch ON: RR door remote P/W auto switch is ON position OFF: RR door remote P/W auto switch is OFF position - RL P/W AUTO SW RL door P/W auto switch ON: RL door P/W auto switch is ON position OFF: RL door P/W auto switch is OFF position - LIMIT SW Jam protection limit switch ON: Jam protection limit switch is ON position OFF: Jam protection limit switch is OFF position - LOCK POS SW Door unlock detection switch ON: Door unlock detection switch is ON position OFF: Door unlock detection switch is OFF position - GLASS POS-1/4 Glass position (Fully close - 1/4open) OK: CAUTION: - GLASS POS-2/4 Glass position (1/4 - 2/4open) OK: CAUTION: - GLASS POS-3/4 Glass position (2/4 - 3/4open) OK: CAUTION: - GLASS POS-OPEN Glass position (3/4 - Fully open) OK: CAUTION: - UP/DOOR KEY Door key linked P/W UP NOT AVL: AVAIL: - DOWN/DOOR KEY Door key linked P/W DOWN NOT AVL: AVAIL: - Body ECU (Main):
BODY ECU (MAIN) - DATA LISTItem Measurement Item/Display (Range) Normal Condition Diagnostic Note KEY UNLOCK WRN SW Key unlock warning SW signal ON: Key is IG key cylinder OFF: Key is not in IG key cylinder - LUGG COURTSY SW Luggage compartment door's courtesy SW signal ON: Luggage door is open OFF: Luggage door is close - D DOR CTY SW Driver's door courtesy SW signal ON: Driver's door is open OFF: Driver's door is close - P DOR CYT SW Passenger's door courtesy SW signal ON: Passenger's door is open OFF: Passenger's door is close - Rr DOR CTY SW Rear door courtesy SW signal ON: Either right or left rear door is open OFF: Both the right and left doors are closed. - P LOCK POS SW Passenger lock position switch ON: Passenger lock position switch is in lock position OFF: Passenger lock position switch is in unlock position - Rr. LOCK POS SW Rear lock position switch ON: Rear lock position switch is in lock position OFF: Rear lock position switch is in unlock position - D/L SW-LOCK Door lock switch lock side ON: Door lock switch is in lock position OFF: Door lock switch is in unlock position - D/L SW-UNLOCK Door lock switch unlock side ON: Door lock switch is in unlock position OFF: Door lock switch is in lock position - DOR KEY SW-LOCK Passenger or back door key switch lock side ON: Passenger or back door key switch is in lock position OFF: Passenger or back door key switch is in unlock position - P DOR KEY SW-UL Passenger or back door key switch unlock side ON: Passenger or back door key switch is in unlock position OFF: Passenger or back door key switch is in lock position - - ACTIVE TEST
HINT:
Performing ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate without removing any parts. Performing ACTIVE TEST as a first step of troubleshooting is one of the method to shorten the labor time.
DATA LIST can be displayed during the ACTIVE TEST.
- Connect the hand-held tester to DLC3.
- Turn the ignition switch ON.
- According to the display on tester, perform the "ACTIVE TEST".
Power window master switch:
POWER WINDOW MASTER SWITCH - ACTIVE TEST DATA LISTItem Test Details Diagnostic Note P/W UP/DOWN Driver power window UP/DOWN - Body ECU (Main):
BODY ECU (MAIN) - ACTIVE TEST DATA LISTItem Test Details Diagnostic Note P P/W UP/DOWN Passenger power window UP/DOWN - RL P/W UP/DOWN RL power window UP/DOWN - RR P/W UP/DOWN RR power window UP/DOWN - DOOR LOCK Drive the Door lock motor at all doors LOCK/UNLOCK -