MACS Monthly Newsletter - 2017 - NOV6

Alldata
Alldata

What's happening here? We
checked all the diagrams, including the one for the powertrain
control module (engine management system schematic) and
we couldn't find an A/C clutch
circuit anywhere. If it was going
to be anywhere it would likely
connect to the PCM, although it
could be in the CAN (Controller
Area Network) and the signal
could get picked up by the PCM.
Once more, no luck.
One of our advantages is that
we can reach people at the manufacturer, which we did, and that
Figure 8: There's an A/C clutch replacement procedure in both the OE service information and as a result the Alldata produced the answer: there are
system for the 2016 Kia Sorento.
two compressors in use, one of
which has both a clutch and a soBut first, he would jumper the relay to make sure the circuit lenoid control valve (Figure 10). However, the clutch-equipped
was intact. But he couldn't locate the relay. At this point he went compressor is NOT on the U.S.-supplied model (at this time
to the wiring diagram, and it shows an electronic control valve. anyway), and inclusion of the clutch parts and service proceYes, the solenoid type. What's going on here? Well some com- dure in the U.S. online service information should not have ocpressors have been known to have both an A/C clutch (making curred. We've been told it will be deleted at some point.
a comeback for improved fuel economy) as well as a solenoid
Fine, mystery is solved. However, the occurrence itself is not
valve. A review of the wiring diagrams didn't show an A/C something that happens in isolation. All manufacturers, inclutch circuit, despite the procedure and parts listing from the cluding the domestics, have models sold outside the U.S. that
OE service information. See Figure 9.

Figure 9: This 2016 Kia Sorento wiring diagram shows an electronic control valve (duty cycle solenoid) wired to the A/C control module at lower left. Although the A/C
pressure transducer is wired to the PCM as shown at right, there's no output control circuit to disengage the A/C clutch.

November 2017

6

MACS Service Reports



Table of Contents for the Digital Edition of MACS Monthly Newsletter - 2017

MACS Monthly Newsletter - 2017 - JAN1
MACS Monthly Newsletter - 2017 - JAN2
MACS Monthly Newsletter - 2017 - JAN3
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MACS Monthly Newsletter - 2017 - FEB1
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MACS Monthly Newsletter - 2017 - MAY1
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MACS Monthly Newsletter - 2017 - JUN1
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MACS Monthly Newsletter - 2017 - JUN6
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MACS Monthly Newsletter - 2017 - JUL5
MACS Monthly Newsletter - 2017 - JUL6
MACS Monthly Newsletter - 2017 - JUL7
MACS Monthly Newsletter - 2017 - JUL8
MACS Monthly Newsletter - 2017 - AUG1
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MACS Monthly Newsletter - 2017 - AUG3
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MACS Monthly Newsletter - 2017 - AUG5
MACS Monthly Newsletter - 2017 - AUG6
MACS Monthly Newsletter - 2017 - AUG7
MACS Monthly Newsletter - 2017 - AUG8
MACS Monthly Newsletter - 2017 - SEP1
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MACS Monthly Newsletter - 2017 - SEP5
MACS Monthly Newsletter - 2017 - SEP6
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MACS Monthly Newsletter - 2017 - SEP8
MACS Monthly Newsletter - 2017 - OCT1
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MACS Monthly Newsletter - 2017 - OCT3
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MACS Monthly Newsletter - 2017 - OCT5
MACS Monthly Newsletter - 2017 - OCT6
MACS Monthly Newsletter - 2017 - OCT7
MACS Monthly Newsletter - 2017 - OCT8
MACS Monthly Newsletter - 2017 - NOV1
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MACS Monthly Newsletter - 2017 - NOV3
MACS Monthly Newsletter - 2017 - NOV4
MACS Monthly Newsletter - 2017 - NOV5
MACS Monthly Newsletter - 2017 - NOV6
MACS Monthly Newsletter - 2017 - NOV7
MACS Monthly Newsletter - 2017 - NOV8
MACS Monthly Newsletter - 2017 - DEC1
MACS Monthly Newsletter - 2017 - DEC2
MACS Monthly Newsletter - 2017 - DEC3
MACS Monthly Newsletter - 2017 - DEC4
MACS Monthly Newsletter - 2017 - DEC5
MACS Monthly Newsletter - 2017 - DEC6
MACS Monthly Newsletter - 2017 - DEC7
MACS Monthly Newsletter - 2017 - DEC8
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