DI–563 DI–560 IN–27
DI–536 – DIAGNOSTICS AIR CONDITIONING SYSTEM 688 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) No air inlet control 1. Air inlet damper position sensor circuit 2. Air inlet control servomotor circuit 3. A/C control assembly DI–560 DI–560 DI–566 IN–27 No air outlet control 1. Air outlet control servomotor circuit 2. A/C control assembly DI–574 IN–27 Engine idle up does not occur, or is continuous 1. Compressor circuit 2. Igniter circuit 3. A/C control assembly DI–569 DI–585 IN–27 Blinking of A/C switch indicator. 1. Compressor lock sensor circuit 2. A/C control assembly DI–552 IN–27 Set temperature value displayed does not much up with operation of temperature control switch. A/C control assembly IN–27 Brightness does not changes when rheostat volume or light con- trol switch it turned. 1. Illumination light system 2. A/C control assembly BE–2 IN–27 Unable to access the diagnosis mode. A/C control assembly IN–27 DTC not recorded. Set mode is cleared when IG switch is turned off. 1. Back–up power source circuit 2. A/C control assembly DI–578 IN–27
DI0D8–01 I00315 Room Temp. Sensor 2 1 G–Y A14 4 5 V A/C Control Assembly 1 A13 SG TR J21 J20 D E W–B W–B J/C – DIAGNOSTICS AIR CONDITIONING SYSTEM DI–537 689 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) CIRCUIT INSPECTION DTC 11 Room Temperature Sensor Circuit CIRCUIT DESCRIPTION This sensor detects the temperature inside the cabin and sends the appropriate signals to the A/C control assembly. DTC No. Detection Item Trouble Area 11 Open or short in room temperature sensor circuit D Room temperature sensor D Harness or connector between room temp. sensor and A/C control Assembly D A/C control assembly WIRING DIAGRAM
BE3840 I00316 I00333 ON SG(–) TR(+) I00317 DI–538 – DIAGNOSTICS AIR CONDITIONING SYSTEM 690 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) INSPECTION PROCEDURE 1 Check voltage between terminals TR and SG of air conditioning control assem- bly connector PREPARATION: (a) Remove A/C control assembly with connectors still con- nected (See page BO–79 ). (b) Turn the ignition switch ON. CHECK: Check voltage between terminals TR and SG of air conditioning control assembly connector at each temperature. OK: at 25 ° C (77 ° F): 1.8 – 2.2 V at 40 ° C (104 ° F): 1.2 – 1.6 V NG Go to step 2. OK Proceed to next circuit inspection shown on matrix chart (See page DI–535 ). However, if DTC 11 is displayed, check and replace air conditioning control assembly. 2 Check room temperature sensor. PREPARATION: (a) Remove room temperature sensor from safety pad No.2 (See page BO–79 ). (b) Disconnect room temperature sensor connector. CHECK: Check resistance between terminals 1 and 2 of room tempera- ture sensor connector at each temperature. OK: at 25 ° (77 ° F): 1.6 – 1.8 k Ω at 40 ° (104 ° F): 0.5 – 0.7 k Ω HINT: As the temperature increases, the resistance decreases. NG Replace room temperature sensor. OK
– DIAGNOSTICS AIR CONDITIONING SYSTEM DI–539 691 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) 3 Check harness and connector between air conditioning control assembly and room temperature sensor (See page IN–27 ).
You've reached the end of your free preview.
Want to read all 584 pages?
- Spring '14
- Lexus, switch, Fuel injection, Engine control unit, mass air flow, air flow meter