IK1900249 - LT CRX50 Refrigerator Diagnostics

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CANADA, UNITED STATES Document ID: IK1900249

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8

Major System:

ACCESSORIES

Created:

8/2/2017

Current Language: English

Last Modified: 8/19/2019

Other Languages: NONE

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Title : LT CRX50 Refrigerator Diagnostics
Applies To : All LT Chassis Equipped with the CRX50 Refrigerator

CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
08/17/2018 - Udpated part number.
08/16/2018 - Added Figure 1 for clarification.
12/05/2017 - Revised performance test instructions.
10/25/2017 - Revised door seal inspection guidelines.
08/16/2017 - Updated performance test instructions relating to the freezer door, included refrigerator model affected.

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DESCRIPTION
This document will guide the user through diagnosing refrigerator complaints such as an inoperable refrigerator, under cooling, and loose
door hinges.

The guidelines listed below are for the refrigerator model CRX50 ONLY

CUSTOMER OBSERVATIONS OR CONCERNS:
Some symptoms the customer may experience are a refrigerator that does not come on at all, the refrigerator runs but will not cool properly,
or the door hinges may not stay secure.

SPECIAL TOOL(s) / SOFTWARE
Not Applicable

SERVICE PARTS INFORMATION
Description

Part Number

Quantity

Notes

Refrigerator, Full Assembly

4086649C93

1

Feature Code 08WLA

DIAGNOSTIC STEP(s)
The steps below will focus one at a time on the three driver complaints that may be present.

LOOSE DOOR HINGE OR SEAL:
Step
1

Action
DIAGNOSTIC: Open the refrigerator door and verify the condition.

Decision
Yes: Proceed to step 2.

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IK1900249 - LT CRX50 Refrigerator Diagnostics

No: Attempt to tighten the hinge screw
(s). If the screw(s) will not tighten then
replace the refrigerator.

Is the door tight on the hinge?

Step

Page 2 of 3

Action

Decision

DIAGNOSTIC: Verify the door seal is secure.
Check for a loose or damaged seal around the refrigerator door.
2

Yes: If the seal is loose, cut or damaged,
the refrigerator will need to be replaced.

Is the seal loose or damaged?
NOTE: A cut or damaged seal is NOT a warrantable condition

No: End of door / seal inspection.

REFRIGERATOR OPERATIONAL CHECKS:
Step

Action
Open the refrigerator door and verify operation.

1

Is the light in the interior of the fridge illuminated? If it is NOT, first make certain the
temperature dial is on the ON position.
Does the light come on with the door open, and the temperature dial in the ON
position?

Step

Action

Decision
Yes; Proceed to Refrigerator
Performance Test.
No: Carefully remove the refrigerator
leaving the harness connected and
proceed to step 2.

Decision

Yes: Make certain the crimp connectors
or spade terminals are not damaged, and
There needs to be a minimum of 12.0 volts to ensure the fridge controller is not in a that they fit tightly at the connection
points and proceed to step 3.
low voltage shutoff mode. Check the main 12 ga. red wire for battery power.
Verify power at the refrigerator supply.

2

Is a minimum of 12.0 volts present at the main 12 ga. supply wire?

Check the 4 terminals on the refrigerator as shown in Figure 1 below.

No: Check the power supply circuit for
the cause of the low voltage. Make
repairs as needed and retest for proper
operation.

Figure 1

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IK1900249 - LT CRX50 Refrigerator Diagnostics

Step

Page 3 of 3

Action

Decision

Yes: Check the ground circuit for
the source of the poor ground. Make
Supply a known good battery negative connection to the fridge. Now, with a known certain the crimp connectors or spade
good power supply over 12.0 volts, and good ground connection recheck for proper terminals are not damaged, and that they
fit tightly at the connection points. Make
operation.
wiring repairs as needed and retest for
proper operation.
Does the light illuminate, and the compressor turn on?
Verify the ground at the refrigerator connection.

3

No: Replace the refrigerator.

WARRANTY INFORMATION
Warranty Claim Coding:
Group:

19304 - Merchandising Items

Noun:

067 - Refrigerator

Refer to the Warranty Coding Manual for Group and Noun Codes.

OTHER RESOURCES
Master Service Information Site
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