Inspection Procedure

1. Check the wireless door lock control functions (see OPERATION CHECK (2006/02-2006/07)  ).

   OK: Each function of wireless door lock control system operates normally using transmitter switch. 

OK: END 

NG: GO TO Next Step 

1. Check that the transmitter's LED illuminates 3 times when the switch is pressed 3 times.

   OK: Transmitter's LED illuminates 3 times when switch is pressed 3 times. 

NG:  GO TO step  4

OK: GO TO Next Step 

1. Check standard LOCK / UNLOCK switch operation.
   NOTE: Standardized test procedure: press the transmitter switch for 1 second, directing the beam to the driver side door outside handle from a distance of 1 m (3.28 ft.). The transmitter should be pointed directly at the handle, i.e. at a 90° angle to the vehicle body.

NG:  GO TO step  5

OK: GO TO Next Step 

1. Temporarily replace the transmitter battery with a new or normally functioning one (see REMOVAL  ).
2. Check that the doors can be locked and unlocked by using the transmitter LOCK / UNLOCK switch.

   OK: Doors can be locked and unlocked with transmitter. 

NG: REPLACE DOOR CONTROL TRANSMITTER 

OK: END (TRANSMITTER BATTERY IS DEFECTIVE) 

1. Disconnect the U28 ECU connector.
2. Disconnect the U36 receiver connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART
   
   

   Tester Connection	Specified Condition
   U28-39 (RSSI) - U36-5 (RSSI)	Below 1 Ω
   U28-38 (RDA) - U36-3 (DATA)
   U28-29 (RCO) - U36-2 (+5)
   U28-17 (E) - Body ground
   U36-6 (GND) - Body ground
   U28-39 (RSSI) or U36-5 (RSSI) - Body ground	10 kΩ or higher
   U28-38 (RDA) or U36-3 (DATA) - Body ground
   U28-29 (RCO) or U36-2 (+5) - Body ground

Fig 1: Identifying U28 ECU And U36 Receiver Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO Next Step 

1. Disconnect the U36 receiver connector.
   Fig 2: Identifying U36 Receiver Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage of the ECU.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART
   
   

   Tester Connection	Specified Condition
   U28-29 (RCO) - Body ground	4.6 to 5.4 V

NG: REPLACE CERTIFICATION ECU 

OK: GO TO Next Step 

1. Reconnect the U36 receiver connector.
2. Measure the voltage between the terminal of the connector and body ground.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   U36-3 (DATA) - Body ground	Power switch OFF, all doors closed and transmitter switch not pressed	10 to 14 V
   	Power switch OFF, all doors closed and transmitter switch pressed	Pulse generation

Fig 3: Identifying U36 Receiver Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE DOOR CONTROL RECEIVER (See  REMOVAL   ) 

OK: GO TO Next Step 

1. Visually inspect the entire glass antenna's lines for breaks.
   Fig 4: Inspecting Entire Glass Antenna Lines For Breaks

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using the tester, check that the glass antenna's lines do not have continuity breaks.
   Fig 5: Checking Continuity Glass Antenna Lines Breaks

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   • Wrap a piece of tin foil around the tip of the negative (-) tester probe as shown in the illustration. Press the foil against the antenna's lines with your finger without damaging the antenna, and inspect the antenna.
   • If foreign matter on the glass needs to be cleaned, use a soft, dry cloth to wipe the glass along the antenna's lines without damaging the antenna.
   • Do not use standard detergents or glass cleaners.
   1. Move the tin foil wrapped probe along the antenna's lines, and check for line breaks.

      OK: Based on visual inspection and tester inspection, antenna line breaks are not present. 

      Fig 6: Wrapping Piece Of Tin Foil Around Tip Of Negative (-) Tester Probe

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR AMPLIFIER ANTENNA ASSEMBLY 

OK: GO TO Next Step 

1. Disconnect the U36 receiver connector.
2. Disconnect the U38 antenna connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART
   
   

   Tester Connection	Specified Condition
   U36-7 (ANT) - U38-1 (ANT)	Below 1 Ω
   U36-7 (ANT) or U38-1 (ANT) - Body ground	10 kΩ or higher

Fig 7: Identifying U36 Receiver And U38 Antenna Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE CERTIFICATION ECU 

OK: GO TO Next Step 

1. Temporarily replace the amplifier antenna with a new or normally functioning one.
2. Check that the doors can be locked and unlocked by using the transmitter LOCK / UNLOCK switch.

   OK: Doors can be locked and unlocked with transmitter. 

OK: END (GLASS ANTENNA IS DEFECTIVE) 

NG: GO TO Next Step 

1. Temporarily replace the door control receiver with a new or normally functioning one.
2. Check that the doors can be locked and unlocked by using the transmitter LOCK / UNLOCK switch.

   OK: Doors can be locked and unlocked with transmitter. 

OK: END (DOOR CONTROL RECEIVER IS DEFECTIVE) 

NG: GO TO Next Step 

1. Temporarily replace the certification ECU with a new or normally functioning one.
2. Check that the doors can be locked and unlocked by using the transmitter LOCK / UNLOCK switch.

   OK: Doors can be locked and unlocked with transmitter. 

NG: REPLACE MAIN BODY ECU RH 

OK: END (CERTIFICATION ECU IS DEFECTIVE)