Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 609
B1D72–SEAT FRONT VERTICAL POSITION SENSOR CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
8N - 134
POWER SEATS - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
When the seat motor is activated (sensor supply voltage is switched on whenever motor is activated).
•
Set Condition:
If during motor operation the sensor voltage is not within a specified range this code will set. This DTC will
only set when the seat switch is moved in the same direction three consecutive times.
Possible Causes
(G404) DRIVER SEAT FRONT VERTICAL POSITION SENSE CIRCUIT SHORTED TO VOLTAGE
REAR DRIVER VERTICAL SEAT ADJUSTER MOTOR
MEMORY SEAT MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTC’s
Move the seat switch front vertical position three times.
With the scan tool, read DTC’s.
Does the scan tool display B1D72–SEAT FRONT VERTICAL POSITION SENSOR CIRCUIT HIGH?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/POWER
SEATS - DIAGNOSIS AND TESTING)
2.
CHECK THE (G404) DRIVER SEAT FRONT VERTICAL POSITION SENSE VOLTAGE
Disconnect the Front Driver Vertical Seat Adjuster Motor.
NOTE: Check connectors – Clean and repair as necessary.
With the scan tool erase DTC’s
Move the seat switch in the both front vertical positions three times.
With the scan tool, read DTC’s.
Does the same DTC reset?
No
>> Inspect the position sense wire for a possible intermittent short to another circuit, if OK replace the Front
Driver Vertical Seat Adjuster Motor assembly.
Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER
SEATS - DIAGNOSIS AND TESTING)
Yes
>> Inspect the position sense wire for a possible short to another circuit, if OK replace the Memory Seat
Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER
SEATS - DIAGNOSIS AND TESTING)
LX
POWER SEATS - ELECTRICAL DIAGNOSTICS
8N - 135
B1D75–SEAT REAR VERTICAL POSITION SENSOR CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
8N - 136
POWER SEATS - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
When the seat motor is activated (sensor supply voltage is switched on whenever motor is activated).
•
Set Condition:
If sensor voltage is not within a specified range this DTC will set. This DTC will only set when the seat switch
is moved in the same direction three consecutive times.
Possible Causes
(G402) DRIVER SEAT REAR VERTICAL POSITION SENSE CIRCUIT SHORTED TO GROUND
REAR DRIVER VERTICAL SEAT ADJUSTER MOTOR
MEMORY SEAT MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTC’s
Move the Seat Switch in the Rear Vertical position three times.
With the scan tool, read DTC’s.
Does the scan tool display B1D75–SEAT REAR VERTICAL POSITION SENSOR CIRCUIT LOW?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/POWER
SEATS - DIAGNOSIS AND TESTING)
2.
CHECK THE (G402) DRIVER SEAT REAR VERTICAL POSITION SENSE VOLTAGE
Disconnect the Rear Driver Vertical Seat Adjuster Motor.
NOTE: Check connectors – Clean and repair as necessary.
Move the seat switch in the rear vertical position during the next step.
Using a 12-volt test light connect one lead to the (G402) Driver Seat
Rear Vertical Position Sense circuit and the other lead to Driver Seat
Rear Vertical Sensor Ground at the Rear Driver Seat Adjuster Motor
connector.
Does the test light illuminate for approximately two seconds
then turn off with the seat switch engaged?
Yes
>> Replace the Rear Driver Vertical Seat Adjuster Motor
assembly.
Perform POWER SEAT SYSTEM VERIFICATION TEST –
VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAG-
NOSIS AND TESTING)
No
>> Go To 3
LX
POWER SEATS - ELECTRICAL DIAGNOSTICS
8N - 137
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