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ON-BOARD DIAGNOSTIC 07-02–3 07-02 DTC B1251, B1253 id070200800300 Diagnostic Procedure End Of Sie DTC B1251, B1253 Passenger compartment temperature sensor system POSSIBLE CAUSE • Passenger compartment temperature sensor malfunction • Open or short circuit in wiring harness between climate control unit and passenger compartment temperature sensor STEP INSPECTION ACTION 1 • Inspect the passenger compartment temperature sensor. (See 07-40-23 PASSENGER • Is it normal? Yes Go to the next step. No Replace the passenger compartment temperature 2 • Disconnect the climate control unit connector and the passenger compartment temperature sensor • Is there an open circuit in the wiring harness between the following terminals of the climate — H— B — C— A Yes Repair the wiring harness. No Go to the next step. 3 • Is there a short circuit to ground in the wiring harness between climate control unit terminal H Yes Repair the wiring harness. No Connect the climate control unit connector, then go to 4 • Turn the ignition switch to the ON position. • Inspect the voltage at the following climate control unit terminal (wiring harness-side). temperature sensor input signal) • Is the voltage normal? (Approx. 5 V) Yes The system is normal at present. (Clear the malfunction No Inspect the connection of the climate control unit CLIMATE CONTROL UNIT CONNECTOR PASSENGER COMPARTMENT TEMPERATURE A M B C D E F G I L J K N O P Q R S T U V W X A B H 1871-1U-06B(07-02).fm 3 ページ 2006年3月16日 木曜日 午後4時22分 |