1995 Toyota Tacoma A/C & Heater Service (ONLINE REPAIR MANUALS)

Testing the refrigerant system for leaks is one of the most important phases of troubleshooting. One or more of the methods outlined will prove useful in detecting leaks or checking connections if service work is performed. Before beginning any leak test, attach a manifold gauge set and note pressure. If little or no pressure is indicated, a partial charge must be installed. Check all connections, compressor head gasket, oil filler plug and compressor shaft seal for leaks.

R-12 leak detectors will not detect R-134a leaks. For R-134a system an electronic type leak detector i...

The Supplemental Restraint System (SRS) incorporates a back up energy source that can maintain sufficient voltage to cause a deployment for up to 90 seconds after the ignition switch is turned off and the battery is disconnected.

When the battery is disconnected all vehicle memory is lost, make notes of radio station settings. Never use a back-up power source from outside the vehicle.

• Note radio station settings before disconnecting battery, as all vehicle memory will be lost.
• Place ...

SUPRA

A/C CONTROL PANEL DIAGNOSIS SYSTEM

If trouble occurs in the automatic A/C system, the specified lamp on the A/C control panel will start blinking during the diagnostic sensor check. During system diagnosis, a problem is indicated on the panel by the blinking of a specific light instead of a code display. For example, when a fault occurs in the solar sensor circuit, the LED for DEF mode switch will be blinking during the sensor check. Refer to Fig. for control panel switch and LED indicator locations.

If a compressor lock occurs during air conditi...

The Automatic Temperature Control system provides automatic control of A/C compressor operation, air inlet door position, water valve operation and blower speeds in order to maintain passenger compartment temperature within the range selected by the operator.

The system control circuit consists of a feedback potentiometer, temperature control rheostat, and ambient and in-car temperature sensors, Figs. and , which are connecte...