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Home >> Scion >> 2012 >> iQ L4-1.3L (1NR-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinout Values and Diagnostic Parameters
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Pinout Values and Diagnostic Parameters





HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY





Text in Illustration





HINT
Check from the rear of the connector while it is connected to the air conditioning amplifier assembly.

Standard









* *1: w/ PTC Heater

* If the result is not as specified, the ECU may have a malfunction.

(a) Waveform 1 : Using an oscilloscope





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

(b) Waveform 2 : Using an oscilloscope





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

(c) Waveform 3 : Using an oscilloscope





Cooler Compressor Operation Signal





2. CHECK COMBINATION METER ASSEMBLY





HINT
Check from the rear of the connector while it is connected to the combination meter assembly.

Standard





If the result is not as specified, the combination meter may have a malfunction.
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