MACS Monthly Newsletter - 2020 - MAR2

sion controls, HVAC (Figure 3), etc. all have their relationships
with most FCA applications containing a TIPM. For the HVAC
world, the A/C pressure transducer gets its 5-volt reference and

Dave Hobbs

FCA

This module (Figures 1, 2) is more complicated (and expensive)
compared to the FCM / IPM arrangement. Anyone who's ever
studied a wiring schematic for a vehicle with a TIPM knows
right off the bat how important this module is to numerous
systems. Lighting, Starting, Accessories (horns, door locks, etc.),
Fuel Pump, ASD (Auto Shut Down relay control), Transmis-

Figure 3: When it comes to blower motors (front or rear)
this 2013 Dodge Caravan's TIPM has traditional plug-in
style relays for both on the top of its TIPM. How those
relays are triggered is another story. More relays (nonserviceable) are sandwiched inside the TIPM.

Figure 2: When the lid is hinged up it appears to be just another
bussed electrical center for fuses and relays. However, the fuse relay
center is just the tip of the iceberg for the functions (and diagnostic
complexities) for a modern Chrysler, Dodge, Ram Truck or Jeep
using a TIPM.

FCA

signal ground from the TIPM (Figure 4). If the vehicle is one of
those rare birds (usually a diesel) with a PTC heater, the TIPM

Figure 4: This schematic tells another part of the story regarding how the A/C clutch gets turned on. Notice the ambient air temp sensor and
A/C pressure sensor connection (circled) to the TIPM? Combining that with the A/C clutch output from the TIPM (connected to the clutch)
causes us to believe that the PCM's role in this 2013 Caravan's HVAC system is purely passive. Note the dotted line around the section of the
TIPM that is titled "Circuit Board (Non-Serviceable)".

March 2020	

2	

MACS Service Reports



MACS Monthly Newsletter - 2020

Table of Contents for the Digital Edition of MACS Monthly Newsletter - 2020

MACS Monthly Newsletter - 2020 - JAN1
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MACS Monthly Newsletter - 2020 - MAR1
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MACS Monthly Newsletter - 2020 - MAY1
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MACS Monthly Newsletter - 2020 - JUN1
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MACS Monthly Newsletter - 2020 - JUN7
MACS Monthly Newsletter - 2020 - JUN8
MACS Monthly Newsletter - 2020 - AUG1
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MACS Monthly Newsletter - 2020 - AUG3
MACS Monthly Newsletter - 2020 - AUG4
MACS Monthly Newsletter - 2020 - AUG5
MACS Monthly Newsletter - 2020 - AUG6
MACS Monthly Newsletter - 2020 - AUG7
MACS Monthly Newsletter - 2020 - AUG8
MACS Monthly Newsletter - 2020 - SEP1
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MACS Monthly Newsletter - 2020 - SEP3
MACS Monthly Newsletter - 2020 - SEP4
MACS Monthly Newsletter - 2020 - SEP5
MACS Monthly Newsletter - 2020 - SEP6
MACS Monthly Newsletter - 2020 - SEP7
MACS Monthly Newsletter - 2020 - SEP8
MACS Monthly Newsletter - 2020 - OCT1
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MACS Monthly Newsletter - 2020 - OCT3
MACS Monthly Newsletter - 2020 - OCT4
MACS Monthly Newsletter - 2020 - OCT5
MACS Monthly Newsletter - 2020 - OCT6
MACS Monthly Newsletter - 2020 - OCT7
MACS Monthly Newsletter - 2020 - OCT8
MACS Monthly Newsletter - 2020 - DEC1
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MACS Monthly Newsletter - 2020 - DEC3
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MACS Monthly Newsletter - 2020 - DEC5
MACS Monthly Newsletter - 2020 - DEC6
MACS Monthly Newsletter - 2020 - DEC8
MACS Monthly Newsletter - 2020 - DEC9
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https://www.nxtbook.com/nxtbooks/macs/servicereports_2019
https://www.nxtbook.com/nxtbooks/macs/servicereports_2018
https://www.nxtbook.com/nxtbooks/macs/servicereports_2017
https://www.nxtbook.com/nxtbooks/macs/servicereports_2016
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