Pinout Values and Diagnostic Parameters

AIR CONDITIONING: AIR CONDITIONING SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. Air Conditioning Amplifier





















(*1): w/ Smart Key System
(*2): w/o Smart Key System





(a) waveform 1:
(1) Measure the waveform between terminal D37-11 (BLW), D38-16 (LOUT), D38-8 (ROUT) and body ground or air conditioning amplifier.
OK:
Waveform appears as shown in the illustration.

HINT: As the air flow amount increases, the waveform gets narrow.





(b) waveform 2:
(1) Measure the waveform between terminal D37-9 (LOCK) and body ground of air conditioning amplifier
OK:
Waveform appears as shown in the illustration.





(c) waveform 3:
(1) Measure the waveform between terminal D37-28 (TACO) and body ground of air conditioning amplifier
OK:
Waveform appears as shown in the illustration.

HINT: As the engine speed becomes faster, the waveform gets narrow.

2. Heater Control Panel LH