2003 LEXUS LS430 Factory Repair Manual

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Page 449 of 4500

LEXUS LS430 2003 Factory Repair Manual a. Remove the luggage room J/B ECU with connectors still connected. b. Measure the voltage according to the value (s) in the table below. Standard: LUGGAGE ROOM J/B ECU (RMGV - BODY GROUND) VOLT

Page 450 of 4500

LEXUS LS430 2003 Factory Repair Manual Standard: REAR AIR CONDITIONING AMPLIFIER (RMGV - BODY GROUND) VOLTAGE NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR AIR CONDITIONING AMPLIFIER - REAR MAGNETIC VALVE) Fig. 186: Inspecting Rea

Page 451 of 4500

LEXUS LS430 2003 Factory Repair Manual a. Measure the resistance according to the value (s) in the table below. Standard: LUGGAGE ROOM J/B - REAR MAGNETIC VALVE VOLTAGE NG: REPAIR OR REPLACE HARNESS OR CONNECTOR Fig. 187: Identifyin

Page 452 of 4500

LEXUS LS430 2003 Factory Repair Manual a. Remove the rear magnetic valve. b. Check the air passage through the valve with and without the battery positive voltage applied between terminals as shown in the chart. Standard: REAR MAGNE

Page 453 of 4500

LEXUS LS430 2003 Factory Repair Manual CIRCUIT DESCRIPTION This sensor detects the smoke inside the cabin and sends the appropriate signals to the luggage room J/B ECU. WIRING DIAGRAM Fig. 189: Smoke Sensor Circuit Courtesy of TOYOTA

Page 454 of 4500

LEXUS LS430 2003 Factory Repair Manual cigarette smoke. Standard: LUGGAGE ROOM J/B ECU (RMGV - BODY GROUND) VOLTAGE Tester connectionConditionSpecified condition L14-16 (SMOK) - Body groundTurn the ignition switch to ON position Tur

Page 455 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 190: Inspecting Luggage Room J/B ECU (RMGV - Body Ground) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 456 of 4500

LEXUS LS430 2003 Factory Repair Manual NG: Go to STEP 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 2.INSPECT SMOKE SENSOR a. Remove the smoke sensor. b. Connect the positive (+) lead from the battery to
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