TSB 23-2133

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TECHNICAL SERVICE BULLETIN
Illuminated ABS Indicator, Engine Will Not Turn Off And/Or Various
Electrical Symptoms
23-2133
21 April 2023
This bulletin supersedes 22-2443.
Model:
Ford
2020-2022 F-Super Duty
Summary
This article supersedes TSB 22-2443 to update the Service Procedure.
Issue: Some 2020-2022 F-Super Duty vehicles may exhibit a condition where the engine will not turn off and/or have
various electrical symptoms including a dead battery, horn stays on and no crank/no start. The vehicle may also have
an illuminated anti-lock brake system (ABS) indicator with diagnostic trouble codes (DTCs) C0020 and U3003 in the
ABS module. This may be a result of water/moisture intrusion into the battery junction box (BJB). The BJB is located
under the hood of the vehicle. This water/moisture intrusion may be related to the BJB cover not installed completely
or broken cover tabs/locking fingers allowing water/moisture into the BJB. To correct the condition, follow the Service
Procedure to inspect for water/moisture intrusion into the BJB and replace the BJB and cover if water/moisture
intrusion is found.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
• 2020-2022 F-Super Duty
• At least one of the following symptoms:
- Various electrical concerns including engine will not turn off
- Dead battery
- Horn stays on
- No crank/no start
- Illuminated ABS indicator with DTCs C0020 and U3003
Parts
Service Part
Number
Quantity Description
14A068
1
Power Distribution Box / Battery Junction Box - Refer To The Parts Catalog For The
VIN Specific Application
LC3Z-14A003-D
1
Battery Junction Box Cover
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty
(SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not
altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified
using the OASIS part coverage tool.
Labor Times
Operation
No.
Description
2020-2022 F-Super Duty: Inspect And Replace The BJB (Do Not Use With Any Other Labor
Operations Outside Of This Article)
232133A
Time
0.6
Hrs.
Repair/Claim Coding
Causal Part:
14A068
Condition Code: 42
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Service Procedure
1. Visually inspect the BJB for signs of water/moisture intrusion. (Figure 1-2) Are there signs of water/moisture
intrusion into the BJB and/or broken cover tabs/locking fingers?
(1). Yes - proceed to Step 2.
(2). No - this article does not apply. Refer to Workshop Manual (WSM) for symptom based diagnostics.
Figure 1 - Example of moisture intrusion with BJB cover on
Figure 2 - Example of moisture intrusion with BJB cover off
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2. Replace the BJB assembly and cover.
(1). Remove the battery and battery tray. Refer to WSM, Section 414-01.
(2). Remove the BJB cover.
(3). Loosen the 2 BJB connector bolts and remove the battery power cable nut. Disconnect the battery power
cable from the BJB.
(4). Release the BJB from the two locking tabs on each side of the BJB.
(5). Lift the BJB to allow access to both BJB connectors. Disconnect both connectors and remove the BJB.
(6). Remove the cover from the new BJB and connect both connectors to the new BJB.
(7). Install the new BJB into both locking tabs.
(8). Attach the battery power cable and tighten the battery power cable nut to 10.5 Nm (93 lb-in). Tighten the
connector bolts to 5.4 Nm (48 lb-in).
(9). Install the new BJB cover making sure the cover tabs/locking fingers are installed correctly. (Figures 3-6)
(10). Install the battery tray and battery back into the vehicle. Refer to WSM, Section 414-01.
Figure 3 - Correct cover installation
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Figure 4 - Incorrect cover installation
Figure 5 - Incorrect cover installation
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Figure 6 - Incorrect cover installation
© 2023 Ford Motor Company
All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and
equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information
that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition
described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy
and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article.
The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede
this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.
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