TT 01 19 01_4

Technical Tip
01-19-01TT - Faults P194A or P16C6 Present in the ECM after Adding
Coolant or Draining the Cooling System
Transaction No:
2053847/4
Release date:
8/21/2020
Condition
ATTENTION:
THIS IS A TECH TIP, NOT A TECHNICAL BULLETIN.
TECH TIPS ARE NOT ASSOCIATED WITH WARRANTY CLAIMING.
Applicable Vehicles
Model(s)
Year
Atlas, Atlas Cross
Sport
2018-2020
Eng. Code
3.6L
(CDVC)
Trans. Code
VIN Range From
VIN Range To
All
All
All
Revision Table
Instance Number
Published Date
Version Number
Reason For Update
2053847/4
8/21/2020
91-19-01TT
2053847/2
3/1/19
91-19-01TT
To update heater support
pump DTC.
2053847/1
2/1/19
91-19-01TT
Original publication.
Include additional model
and model year
applicability.
Technical Background
Faults present in Engine/Motor Control Module -J623- after adding coolant or refilling the cooling system.
If either fault P16C600 (Heater Support Pump Dry Running) or P194A0 (Coolant Pump RPM Too High) are present in
Engine/Motor Control Module -J623-, after adding coolant for a low coolant concern or draining and refilling the
cooling system, there may be air trapped in the Heater Support Pump -V488-.
Service
The trapped air may be difficult to remove from Heater Support Pump -V488-. The cooling system must be drained or
refilled using the -VAS6096- Cooling System Charge Kit referenced in Coolant Draining and Filling under repair
manual group 19 Cooling System in Elsa.
If either fault P16C600 (Heater Support Pump Dry Running) or P194A00 (Coolant pump RPM too high), are present in
Engine/Motor Control Module -J623- after refilling the cooling system with -VAS6096 - Cooling System Charge Kit:

Raise the front of the vehicle higher than the rear of the vehicle in a safe manner to aid in removal of the air
from the cooling system.
With the front of the vehicle raised:

Run the drain and refill procedure at least one time to remove the air from the cooling system and retest
operation.
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Technical Tip
01-19-01TT - Faults P194A or P16C6 Present in the ECM after Adding
Coolant or Draining the Cooling System
Transaction No:
2053847/4
Release date:
8/21/2020
Additional Information
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