MACS Service Reports - 2016 - MAY4

hmaservice.com

That was the complaint of the shop technician with a ready to start, displaying the code numbers (see Figures 7,
2010 Hyundai Genesis coupe with the 2.0-liter four-cyl- 8). If there are multiple codes you can advance the display
inder and Automatic Temperature Control. Of course by pressing the A/C button. There is no specific test of the
he really was complaining about the fact that he felt he A/C module, but if there's no potentiometer code and the
couldn't diagnose failure of the A/C clutch to engage and inputs and ground are okay, any issue that isn't traced to the
that his premium aftermarket scanner would not display powertrain module or powertrain codes tilts the diagnosis
body computer codes. So he sent the car to the dealer, to the A/C module. ■
which (he found out when he picked up the car) replaced
the A/C control module.
He also complained (yes,
lots of complaints) that the
three aftermarket service
information systems didn't
have good diagnostic information and he wasn't going
to invest in the OE scan tool.
But he never went to the
OE site (www.hmaservice.
com). Couple of things: 1)
he could have called any of
the aftermarket systems help
lines and they would have
checked and emailed him
anything they didn't display,
if it were available on the OE
site. 2) the Hyundai OE site
is not free at this time. The
site has had times when it
was free, but at the time
we're writing this, there's a
$20/week charge.
The dealer told the shop
the factory scan tool would
Figure 7: Flow chart for on-board diagnosis of 2010 (and later) Hyundai Genesis 2.0-liter turbo sport coupe
not troubleshoot the sysAutomatic Temperature Control system.
tem, indicating it used conventional diagnostics to determine the A/C control module was bad. Oh
well, the independent shop technician figured, "I
couldn't take a gamble on buying a module and
not have it fix the car, so sending it to the dealer
was probably the best thing to do."
Another couple of things: 1) actually the Hyundai Hi-Scan Pro will display the trouble codes,
or so the Hyundai service website says. 2) more
important is that you don't need the scan tool,
because there's a method of getting the codes for
all the ATC sensors and the panel potentiometer
through the vehicle's control panel. Just turn the
ignition switch off, then on, followed immediately by pressing the OFF switch very quickly
five times (within two seconds) while pressing
down on the MODE switch. All the graphics on
the control panel display will blink three times
(each blink within about a half-second), then press
Figure 8: Trouble codes that the HVAC panel can display for the Genesis sport coupe
the AUTO button and the self-diagnosis should be
ATC.

hmaservice.com

DON'T HAVE THE FACTORY SCAN TOOL?

May 2016

4

MACS Service Reports



http://www.hmaservice http://www.hmaservice.com http://www.hmaservice.com

Table of Contents for the Digital Edition of MACS Service Reports - 2016

MACS Service Reports - 2016 - JAN1
MACS Service Reports - 2016 - JAN2
MACS Service Reports - 2016 - JAN3
MACS Service Reports - 2016 - JAN4
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MACS Service Reports - 2016 - FEB1
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MACS Service Reports - 2016 - MAR1
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MACS Service Reports - 2016 - APR1
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MACS Service Reports - 2016 - MAY1
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MACS Service Reports - 2016 - MAY7
MACS Service Reports - 2016 - MAY8
MACS Service Reports - 2016 - JUN1
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MACS Service Reports - 2016 - JUN4
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MACS Service Reports - 2016 - JUN6
MACS Service Reports - 2016 - JUN7
MACS Service Reports - 2016 - JUN8
MACS Service Reports - 2016 - JUL1
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MACS Service Reports - 2016 - JUL8
MACS Service Reports - 2016 - AUG1
MACS Service Reports - 2016 - AUG2
MACS Service Reports - 2016 - AUG3
MACS Service Reports - 2016 - AUG4
MACS Service Reports - 2016 - AUG5
MACS Service Reports - 2016 - AUG6
MACS Service Reports - 2016 - AUG7
MACS Service Reports - 2016 - AUG8
MACS Service Reports - 2016 - SEP1
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MACS Service Reports - 2016 - SEP4
MACS Service Reports - 2016 - SEP5
MACS Service Reports - 2016 - SEP6
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MACS Service Reports - 2016 - SEP8
MACS Service Reports - 2016 - OCT1
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MACS Service Reports - 2016 - OCT5
MACS Service Reports - 2016 - OCT6
MACS Service Reports - 2016 - OCT7
MACS Service Reports - 2016 - OCT8
MACS Service Reports - 2016 - NOV1
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MACS Service Reports - 2016 - NOV5
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MACS Service Reports - 2016 - NOV7
MACS Service Reports - 2016 - NOV8
MACS Service Reports - 2016 - DEC1
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MACS Service Reports - 2016 - DEC3
MACS Service Reports - 2016 - DEC4
MACS Service Reports - 2016 - DEC5
MACS Service Reports - 2016 - DEC6
MACS Service Reports - 2016 - DEC7
MACS Service Reports - 2016 - DEC8
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