S1808000284

STAR ONLINE PUBLICATION
Case Number: S1808000284
Release Date:
7/17/2020
Symptom/Vehicle Issue: Power Mirrors And Door Locks Do Not Function. Blind Spot
Alert Temporarily Unavailable Is Displayed On The EVIC
Discussion: The customer may complain that “Blind Spot Alert Temporarily
Unavailable” is displayed on the EVIC when starting the vehicle. The customer may
also notice the power door locks and/or power mirrors are inoperable.
This publication is intended to give you a basic understanding of how the doors
are monitored and known failures that may cause customer concerns.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does
not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be
similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
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STAR ONLINE PUBLICATION
System Overview: On Jeep Wrangler, the doors are designed to be removed by the
customer. This unique feature requires unconventional operation of the doors electrical
systems. The JL/JT has a variety of new components located in the door compared to
the outgoing JK platform. This includes the Blind Spot Mirrors, Passive Entry System
Handles, and a Power Mirror Switch.
Because of the additional components, the BCM continuously monitors if the doors are
Open, Closed, or Removed from the vehicle. If the BCM believes the doors have been
removed, the Blind Spot System is disabled. This is because the Blind Spot Mirrors,
which are integrated into the door and are a primary component in the system, have
been removed. The “Blind Spot Alert Temporarily Unavailable” is then displayed to the
customer. Additionally the Power Mirror Switch, which on JL is powered by an
independent relay in the PDC. Is switched off by the BCM when the door is removed.
BCM Door Monitoring: The BCM monitors both front door Ajar Switch Sense circuits
to determine the state of the doors and if the aforementioned systems should be
enabled/disabled. The Ajar Switch uses two internal resistors to manipulate the voltage
based on the door latches position. In WiTech 2 under the BCM Data tab, the circuits
monitored are displayed as “(Door Location) Analog Door Ajar Switch Voltage”.
Door Closed: 8 V (Switch Open)
Door Open: 4 V (Switch Closed)
Door Removed: B+ V (Open Circuit)
Note: These voltages are relative to battery system voltage. Your actual readings
for each position may vary slightly.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does
not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be
similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCA US LLC
Version 4.2 02/06/2017
STAR ONLINE PUBLICATION
Repair: If the customer concerns originally discussed are present, the BCM may have
intentionally disabled those systems. Monitor the Analog Door Ajar Switch Voltage in
Witech 2 and compare them with the voltage readings listed above. If either of the front
door ajar sense voltages display B+ voltage. The BCM believes that door has been
removed from the vehicle.
Begin by verifying all of the inline door connectors are fully connected and locked. It is
advised to inspect the Drivers XY600A and Passengers XY650A inline door
connectors for pushed out or damaged pin/terminals. Damage has been found on
pin/terminals 17(Lock Switch Return) and 18(Door Ajar Switch Sense) of the drivers
and passengers inline door connectors.
Bent Pins
XY600A and XY650A
Note: It is VERY common for the customer to damages pins and terminals when
removing and installing the doors.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does
not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be
similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCA US LLC
Version 4.2 02/06/2017
STAR ONLINE PUBLICATION
You should also verify the door latch and wiring for proper operation. Any open in the
door ajar switch circuits will cause the BCM to disable the systems incorporated into
the door. This fault will not set a DTC.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does
not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be
similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCA US LLC
Version 4.2 02/06/2017