Tham khảo tài liệu 'understanding automotive electronics 5e episode 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | DIAGNOSTICS 10 Measurements of average O2 sensor voltage are useful for diagnosis of this sensor. 6. With code 76 displayed and the cruise control instrument panel switch on depress and release the set coast button. If the button switch is operating normally the display advances to 77. 7. With 77 displayed and with the cruise control instrument on depress and release the resume acceleration switch. If the switch is operating normally the display advances to 78. 8. With 78 displayed depress and release the instant average button on the MPG panel. If the button is working normally the code advances to 79. 9. With 79 displayed depress and release the reset button on the mph panel. If the reset button is working normally the code will advance to 80. 10. With 80 displayed depress and release the rear defogger button on the climate control head. If the defogger switch is working normally the code advances to 70 thereby completing the switch tests. With code 70 displayed the engine data can be displayed in sequence by switching the cruise control instrument panel off. The code should then advance to 90. To further advance the display the mechanic must depress the instant average button on the MPG panel to return to the previously displayed parameter the mechanic must depress the reset button on the MPG panel . To exit the engine parameter display mode the mechanic simultaneously depresses the Off and Hi buttons on the climate control head. After the last parameter has been displayed the code advances to 95. Figure shows the parameter values in sequence. Parameter 01 is the angular deflection of the throttle in degrees from idle position. Parameter 02 is the manifold absolute pressure in kilopascals kPa . The range for this parameter is 14 to 99 with 14 representing about the maximum manifold vacuum. Parameter 03 is the absolute atmospheric pressure in kPa. Normal atmospheric pressure is roughly 90-100 kPa at sea level. Parameter 04 is the coolant temperature. The .
