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4.9.2 IGV Verification
4.9.2.1 IGV Stepper Motor Verification
1. Isolate compressor power.
2. Disconnect the IGV Motor Cable from the suction pressure/temperature sensor and the IGV Motor
power feedthrough. Refer to Figure 4-43 IGV Motor Feedthrough for this and the following step.
3. Measure the resistance between terminals 1-2, and 3-4 of the IGV Motor feedthrough. The measured
value should be between 46Ω and 59Ω.
4. Measure the resistance between the IGV Motor feedthrough terminals and the IGV Housing. The
measured value should be open or infinity.
Figure 4-43 IGV Motor Feedthrough
4.9.2.2 IGV Operation Verification
Some of the steps contained within this section require the use of the SMT. Refer to the Service Monitoring Tool
Manual regarding the proper usage of the SMT.
1. Remove the Service Side Cover. Refer to Section 4.1.3.1 Service Side Cover Removal and Installation on
2. Open the SMT installed on your computer and connect to the compressor. Refer to Figure 4-44 SMT
Figure 4-44 SMT Icon
3. Open the
Compressor Configuration
tool. Refer to Figure 4-45 Compressor Configuration Tool.
Figure 4-45 Compressor Configuration Tool
4. Set the Compressor Control Mode to
Manual Control
by selecting
Manual Control
from the
Compressor Control Mode drop-down list. Refer to Figure 4-46 Control Mode on page 84.
M-SV-001-EN Rev. H-1/23/2023 Page 83 of 294
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