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Technical Information Bulletin
SPN 111 FMI 1 – 2010-2013 CT11 and CT13 Coolant Consumption{7000}
Media Number -TIBU7603-00

Publication Date -2014/05/27

Date Updated -2014/05/27

Caterpillar: Confidential Yellow

i05811435

SPN 111 FMI 1 – 2010-2013 CT11 and CT13 Coolant
Consumption{7000}
SMCS - 7000

On Highway Truck:
CT660 (S/N: TGA1-UP; TGD1-UP; TJD1-UP; TEJ1-UP; TRK1-UP; TKL1-UP; TEM1UP; TEP1-UP; TGR1-UP; TGS1-UP; TJS1-UP; TGT1-UP; TGW1-UP; TSW1-UP; TEY1
-UP; TSY1-UP; TEZ1-UP; TGZ1-UP)

Introduction
This Technical Information Bulletin (TIB) addresses low coolant (SPN 111 FMI 1) and/or coolant
consumption on 2010 to 2013 – CT11 and CT13 liter engines. The procedure will guide the user
through common failure areas, diagnostic tools, SRTs, and warranty filing.

Problem
Consistent need to refill deaeration tank and active or previously active DTCs related to the cooling
system.
SPN 111 FMI 1 - Low Coolant
Malfunction Indicator Light (MIL)

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Customer Observations or Concerns
• Malfunction Indicator Light (MIL)
• Red Stop Lamp (RSL)
• Coolant consumption
• Low coolant
• Coolant puddle under engine
• White smoke from the exhaust
• Coolant in the oil or oil analysis

Solution
Table 1
Special Tools
Tool Description

Tool
Number

Comments

Plastic Plug/Cap Kit

373-4730

Used for sealing components during repairs

Radiator Pressure Testing
Kit

259-6237

Coolant Tester Gp

Coolant Management
Tool

372-5254

Cooling system drain and vacuum fill

EGR Cooler Leak
Detection Kit

372-5257

EGR Cooler Alignment
Tool

442-9850

If replacing an HT or LT EGRC section

EGR Cooler Lifting
Bracket

462-9173

If removing EGR Cooler

Kit, Charge Air Cooler
Test

373-4793

LPCAC Pressure Test Tool

HT and LT EGRC Pressure Tester "New" procedure
tests with valve installed

NOTICE
Engine fluids (oil, fuel, and coolant) may be a hazard to human health
and the environment. Handle all fluids and other contaminated

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materials (e.g., filters, rags) in accordance with applicable regulations.
Recycle or dispose of engine fluids, filters, and other contaminated
materials according to applicable regulations.

Hot engine components can cause injury from burns. Before
performing maintenance on the engine, allow the engine and the
components to cool.

Personal injury can result from hot coolant, steam and alkali.
At operating temperature, engine coolant is hot and under pressure.
The radiator and all lines to heaters or the engine contain hot coolant or
steam. Any contact can cause severe burns.
Remove filler cap slowly to relieve pressure only when engine is stopped
and radiator cap is cool enough to touch with your bare hand.
Cooling System Conditioner contains alkali. Avoid contact with skin
and eyes.

Before Beginning:
To prevent unnecessary repair, it is important to review a few areas of the vehicle. Each of the
following can manifest in coolant consumption or low coolant level:
• Was the vehicle recently in for repair in which the cooling system was not properly filled (air
pockets)?
• Was the vehicle recently repaired and the fault code unsuccessfully cleared?
• Is the operator aware of the proper filling procedure (overfill)?
If the coolant leak path is known (white smoke, coolant in oil samples, etc.), proceed to the applicable
steps or Technical Service Bulletin as noted below. Otherwise, continue with Step 1.
• Step 1 – External Leaks

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• Coolant in the exhaust
• Coolant in the intake
• Coolant in the oil

Coolant Consumption Diagnostic Procedure:
If diagnosing a 111-1 code and having no associated coolant loss concern, go to 111-1 code circuit
troubleshooting in the Engine Diagnostic Manual under Circuit Diagnostics > ECL Switch (Engine
coolant level).

Pressurized system: Hot coolant can cause serious burn. To open cap,
stop engine, wait until radiator is cool. Then loosen cap slowly to relieve
the pressure.

Table 2
Step

1

Action

Decision

Visually inspect all components and hoses for
external leaks.

Yes: Repair as necessary. Restore the
engine to operational condition and
retest cooling system.

Are any external coolant leaks visible?

No: Go to Step 2.

Remove deaeration tank cap. Pressurize cap to its
rated pressure:
Remove deaeration tank cap.
2

Yes: Go to Coolant Overflow
diagnostics in the Engine Diagnostic
Manual.

Connect Radiator Pressure Testing Kit 259-6237
with Surge Tank Cap Adaptor to deaeration cap..
Pressurize deaeration cap to its rated pressure..

3

Start engine. With engine at operating temperature
and operating at high idle speed, inspect for
coolant overflow out of deaeration tank.

No: Go to Step 4
Yes: Go to Coolant Overflow
diagnostics in the Engine Diagnostic
Manual.

Is coolant overflowing out of the deaeration tank?
No: Go to Step 4
4

Yes: Go to Coolant in the Exhaust
symptom-based diagnostics.

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Inspect for coolant in the exhaust.
No: Go to Step 5
Is coolant visible in the exhaust system?
Inspect for coolant and/or white coolant residue in
the charge air intake:
Disconnect CAC pipe at ETV housing.
5

Yes: Go to Coolant in intake
symptom -based diagnostics.

Inspect CAC pipe for visual signs of white coolant
residue.
Inspect the ETV housing for visual signs of
coolant.
Is coolant and/or white coolant residue present in
intake?
Inspect for visible evidence of coolant on the
engine oil level gauge (dipstick):

6

No: Go to Step 6

Yes: Go to Coolant in lube oil
symptom -based diagnostics.

Remove and inspect engine oil dipstick for visible
evidence of contamination.
Oil contamination with coolant generally causes
the oil to thicken and coagulate, giving the oil a
light gray, sludge appearance.

Copyright 1993 - 2014 Caterpillar Inc.
All Rights Reserved.

No: Restore the engine to operational
condition and retest cooling system.

Wed Jun 4 16:16:45 CDT 2014
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