Section 511 (Rear Sunshade System): Inspection

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RELAY (RR S/SHADE)

Remove the RR S/SHADE relay from the luggage room J/B.

Measure the resistance of the RR S/SHADE relay.

Standard:

TESTER AND SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
3 - 5	10 kΩ or higher
3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

If the result is not as specified, replace the relay.

Fig 1: Measuring Resistance Of RR S/Shade Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT TRACTION CONTROL SWITCH (REAR SUNSHADE SWITCH FOR FRONT SIDE)

Measure the resistance of the switch.

Standard:

TESTER AND SPECIFIED CONDITION CHART

Tester Connection	Switch Condition	Specified Condition
6 - 7	ON	Below 1 Ω
6 - 7	OFF	10 kΩ or higher

If the result is not as specified, replace the switch.

Fig 2: Identifying Traction Control Switch Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT REAR SUNSHADE SWITCH (REAR SIDE)

Measure the resistance of the switch.

Standard:

TERMINAL RESISTANCE CHART

Tester Connection	Switch Condition	Specified Condition
1 - 2	ON	Below 1 Ω
1 - 2	OFF	10 kΩ or higher

If the result is not as specified, replace the switch.

Fig 3: Identifying Rear Sunshade Switch Connector Terminal

INSPECT LUGGAGE ROOM JUNCTION BLOCK ECU

Disconnect the relay connector.
Measure the voltage of each terminal of the wire harness side connector.

Fig 4: Identifying Relay Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

TESTER AND SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
1 (IG) - Body ground	Ignition switch ON	10 to 14 V
1 (IG) - Body ground	Ignition switch OFF or ACC	Below 1 V
2 (REV) - Body ground	Ignition switch ON, Shift position R	10 to 14 V
2 (REV) - Body ground	Ignition switch ON, Shift position P	Below 1 V

If the result is not as specified, luggage room J/B ECU or wire harness may have a malfunction.

INSPECT REAR SUNSHADE (MOTOR OPERATION)
1. Hold the edge of the rear sunshade with your hands, as shown in the illustration.
  CAUTION: Be careful when the rear sunshade raises and lowers. Something could get caught in the rear sunshade and cause an injury.
  
  Fig 5: Holding Edge Of Rear Sunshade
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the battery's positive (+) lead to terminal 4 and negative (-) lead to terminal3. Check that the rear sunshade moves up.
3. Reverse the polarity and check that the rear sunshade moves down.
  NOTE: To prevent the motor from being burned, stop operation as soon as the rear sunshade is fully turned up or down.
  
  Fig 6: Identifying Terminal Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If all the check results are as specified above and normal wire harness is confirmed, replace the rear sunshade control relay