Control Module HVAC: Testing and Inspection
TERMINALS OF ECUTerminals Of Control Module/Pinouts Part 1:
Terminals Of Control Module/Pinouts Part 2:
1. AIR CONDITIONING AMPLIFIER
Oscilloscope Waveform:
Waveform 1: Measure the voltage between terminal SPD of the A/C amplifier assy connector and body ground when turning the rear wheel slowly.
OK:
Waveform operate as shown in the illustration.
HINT: As vehicle speed increases, the cycle of the signal waveform narrows.
Terminals Of ECM/Pinouts - ECM:
2. ECM
Oscilloscope Waveform:
Waveform 2: Measure the waveform between terminal LCK1 (E6 23) of the ECM and body ground.
OK:
Waveform operate as shown in the illustration.
Terminals Of ECM/Pinouts - Clock Assy:
3. CLOCK ASSY