DTC B0954, B0955, B0956, or B0957
Diagnostic Instructions
DTC Descriptors
| DTC B0954 01: Parking Assist Front Sensor Left
Corner Circuit Short to Battery |
| DTC B0954 06: Parking Assist Front Sensor Left
Corner Circuit Low Voltage/Open |
| DTC B0954 08: Parking Assist Front Sensor Left
Corner Circuit Performance - Signal Invalid |
| DTC B0954 21: Parking Assist Front Sensor Left
Corner Circuit Incorrect Period |
| DTC B0954 3A: Parking Assist Front Sensor Left
Corner Circuit Incorrect Component Installed |
| DTC B0955 01: Parking Assist Front Sensor Left
Middle Circuit Short to Battery |
| DTC B0955 06: Parking Assist Front Sensor Left
Middle Circuit Low Voltage/Open |
| DTC B0955 08: Parking Assist Front Sensor Left
Middle Circuit Performance - Signal Invalid |
| DTC B0955 21: Parking Assist Front Sensor Left
Middle Circuit Incorrect Period |
| DTC B0955 3A: Parking Assist Front Sensor Left
Middle Circuit Incorrect Component Installed |
| DTC B0956 01: Parking Assist Front Sensor
Right Middle Circuit Short to Battery |
| DTC B0956 06: Parking Assist Front Sensor
Right Middle Circuit Low Voltage/Open |
| DTC B0956 08: Parking Assist Front Sensor
Right Middle Circuit Performance - Signal Invalid |
| DTC B0956 21: Parking Assist Front Sensor
Right Middle Circuit Incorrect Period |
| DTC B0956 3A: Parking Assist Front Sensor
Right Middle Circuit Incorrect Component Installed |
| DTC B0957 01: Parking Assist Front Sensor
Right Corner Circuit Short to Battery |
| DTC B0957 06: Parking Assist Front Sensor
Right Corner Circuit Low Voltage/Open |
| DTC B0957 08: Parking Assist Front Sensor
Right Corner Circuit Performance - Signal Invalid |
| DTC B0957 21: Parking Assist Front Sensor
Right Corner Circuit Incorrect Period |
| DTC B0957 3A: Parking Assist Front Sensor
Right Corner Circuit Incorrect Component Installed |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
8V Reference
|
B1405 02
|
B0954 06,
B0955 06,
B0956 06,
B0957 06
-
B0958 06,
B0959 06,
B0960 06,
B0961 06,
-
B1405 03
|
B0954 06,
B0955 06,
B0956 06,
B0957 06
-
B0958 06,
B0959 06,
B0960 06,
B0961 06,
-
B1405 07
|
-
|
Left Front Object Sensor Signal
|
B0954 06
|
B0954 06
|
B0954 01
|
B0954 08,
B0954 21
|
Left Middle Front Object Sensor Signal
|
B0955 06
|
B0955 06
|
B0955 01
|
B0955 08,
B0955 21
|
Right Middle Front Object Sensor Signal
|
B0956 06
|
B0956 06
|
B0956 01
|
B0956 08,
B0956 21
|
Right Front Object Sensor Signal
|
B0957 06
|
B0957 06
|
B0957 01
|
B0957 08,
B0957 21
|
Low Reference
|
-
|
B0954 06,
B0955 06,
B0956 06,
B0957 06
-
B0958 06,
B0959 06,
B0960 06,
B0961 06
|
-
|
-
|
|
| |
Circuit/System Description
The object sensors are 3-wire sensors that are used to determine
the distance between the vehicle and an object of interest. The
parking assist control module supplies 8 V to the object sensors
via the 8 V reference circuit and provides ground via the low
reference circuit. The parking assist control module triggers the
sensors in a sequential loop. After each sensor transmits, the
parking assist control module uses the sensor echo received through
the signal circuit to calculate the distance and position of an
object.
Conditions for Running the DTC
| • |
The parking assist is
activated. The activation takes place through putting in the
reverse gear or through operating the park assist switch.
|
Conditions for Setting the DTC
B0954 01, B0955 01, B0956 01, or B0957 01
The parking assist control module has detected the voltage at the
sensor circuit is greater than 11.5 V.
B0954 06, B0955 06, B0956 06, or B0957 06
The parking assist control module has detected the voltage at the
sensor circuit is less than 0.5 V.
B0954 08, B0955 08, B0956 08, or B0957 08
The parking assist control module has received an invalid signal.
B0954 21, B0955 21, B0956 21, or B0957 21
The object sensor determines no change in the position of an object
while the vehicle is in motion.
B0954 3A, B0955 3A, B0956 3A, or B0957 3A
The parking assist control module determines the wrong sensor type
is installed.
Action Taken When the DTC Sets
| • |
The parking assist is
disabled. |
| • |
The driver information center
displays SERVICE PARK ASSIST. |
Conditions for Clearing the DTC
The condition for setting the DTC is no longer present.
Reference Information
Schematic Reference
Object Detection Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Object Detection Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| 1. |
Verify that DTC B1405 is not
present. |
| 2. |
Verify that DTC B0954 01,
B0955 01, B0956 01 or B0957 01 is not present. |
| ⇒ |
If DTC is present, check the appropriate sensor
for contamination with mud, ice or snow. If no contamination is
diagnosed, refer to Circuit/System Testing. |
| 3. |
Verify that DTC B0954 21,
B0955 21, B0956 21 or B0957 21 is not present. |
| ⇒ |
If DTC is present, check the respective sensor for
contamination by mud, ice or snow. If no contamination is
diagnosed, replace the sensor. |
| 4. |
Verify that DTC B0954 3A,
B0955 3A, B0956 3A or B0957 3A is not present. |
| ⇒ |
If DTC is present, replace the respective sensor
with a sensor of correct sensor type. |
| 5. |
Ignition ON, transmission in
REVERSE, verify the scan tool Parking Assist System Status
parameter displays Enabled. |
Circuit/System Testing
| 1. |
Ignition OFF, remove the
ignition key, open the driver door and disconnect the harness
connector at the appropriate front object sensor. |
| 2. |
Wait for 30 s, test for less
than 5 Ω between the low reference circuit terminal 2 and
ground. |
| ⇒ |
If greater than the specified range, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K41 Front and Rear Parking Assist Control
Module. |
| 3. |
Ignition ON, test for 7.5-9.0
V between the 8 V reference circuit terminal 1 and ground.
|
| ⇒ |
If less than the specified range, test the 8 V
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K41 Front and Rear Parking Assist Control
Module. |
| 4. |
Ignition OFF, remove the
malfunctioning object sensor and swap locations with another
properly functioning front object sensor. Connect the harness
connector at both sensors. |
| 5. |
Ignition ON, verify the DTC is
set for the new location in which the malfunctioning sensor is
installed. |
| ⇒ |
If the DTC does not set for the new location, test
the signal circuit terminal 3 for a short to voltage, short to
ground, or an open/high resistance. If the circuit tests normal,
replace the K41 Front and Rear Parking Assist Control Module. |
| 6. |
If the DTC sets for the new
location in which the malfunctioning sensor is installed, replace
the appropriate front object sensor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
