Chrysler Pacifica. Manual — part 246
TEST
ACTION
APPLICABILITY
3
Disconnect the Driver Recliner Seat Position Sensor connector.
Measure the voltage between Driver Seat Sensor 5 volt supply circuit and ground.
Turn ignition on.
Is the voltage above 5.5 volts?
All
Yes
→ Repair the Driver Seat Sensor 5 Volt Supply circuit for a short to
battery.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Go To 4
4
Turn ignition off.
Disconnect the Driver Recliner Seat Position Sensor Connector.
Disconnect the MHSAPM C2 Connector.
Turn ignition on.
Measure the voltage between Driver Seat Recliner Position Signal circuit and
ground.
Is the voltage above 0.2 volts?
All
Yes
→ Repair the Driver Seat Recliner Position Signal circuit for a short
to voltage.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Go To 5
5
Turn ignition off.
Disconnect the Driver Recliner Seat Position Sensor Connector.
Ensure the MHSAPM is fully connected before proceeding.
Turn ignition on.
With the DRBIII
t in MHSAPM Sensors
Read the Driver Recliner Seat Position Sensor voltage.
Is the voltage above 0.2 volts?
All
Yes
→ Go To 6
No
→ Replace the Seat Back Assembly.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
6
Ensure all seat and sensor connectors are connected and Recliner motor is opera-
tional.
With the DRBIII
t in MHSAPM Sensors monitor the Driver Seat Recliner Sensor
while operating the seat Recliner motor to both limits.
Did the voltage ever go above 7.0 volts only when the motor was in operation?
All
Yes
→ Replace the Seat Back Assembly.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Go To 7
7
If there are no possible causes remaining, view repair.
All
Repair
Replace the Memory/Heated Seat Adjustable Pedal Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
981
POWER SEATS
DRIVER RECLINER SENSOR OUT OF RANGE HIGH - MHSAPM —
Continued
TEST
ACTION
APPLICABILITY
8
Turn ignition off.
Disconnect the Memory/Heated Seat Adjustable Pedal Module C2 connector.
Disconnect the Driver Recliner Seat Position Sensor connector.
Measure the resistance of the Driver Seat Position Sensor Ground wire between the
Recliner Sensor connector and the C2 connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Memory/Heated Seat Adjustable Pedal Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Repair the open Driver Seat Position Sensor Ground wire.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
982
POWER SEATS
DRIVER RECLINER SENSOR OUT OF RANGE HIGH - MHSAPM —
Continued
Symptom:
DRIVER RECLINER SENSOR OUT OF RANGE LOW - MHSAPM
When Monitored and Set Condition:
DRIVER RECLINER SENSOR OUT OF RANGE LOW - MHSAPM
When Monitored:
Continuously.
Set Condition:
This code is immediately set when the seat motor potentiometer feeds a
value lower than the Memory/Heated Seat Adjustable Pedal Module has stored in
EEPROM. Code will remain for 50 ignition cycles.
POSSIBLE CAUSES
DRIVER SEAT SENSOR 5 VOLT SUPPLY WIRE OPEN
DRIVER SEAT SENSOR 5 VOLT SUPPLY WIRE SHORT TO GROUND
DRIVER SEAT RECLINER POSITION SIGNAL CIRCUIT OPEN
DRIVER SEAT RECLINER POSITION SIGNAL CIRCUIT SHORT TO GROUND
MEMORY/HEATED SEAT ADJUSTABLE PEDAL MODULE 5 VOLT SUPPLY
DRIVER SEAT RECLINER POSITION SENSOR LOW
MEMORY/HEATED SEAT ADJUSTABLE PEDAL MODULE RECLINER LOW
STORED DIAGNOSTIC TROUBLE CODE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase the DTC from Memory/Heated Seat Adjustable Pedals
Module (MHSAPM).
Operate the driver’s power seat and memory system.
Turn the ignition switch to the Off position then start the engine and let run for one
minute.
With the DRBlll
t check for the same DTC to reset in the MHSAPM.
Did the same DTC reset?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
2
Ensure the MHSAPM is fully connected before proceeding.
Disconnect the Driver Recliner Seat Position Sensor connector.
Turn ignition on.
Measure the voltage of the Driver Seat Sensor 5 Volt Supply circuit at Recliner Seat
Position Sensor connector.
Is the voltage above 4.5 volts?
All
Yes
→ Go To 3
No
→ Go To 7
983
POWER SEATS
TEST
ACTION
APPLICABILITY
3
Turn ignition off.
Disconnect the Driver Recliner Seat Position Sensor Connector.
Disconnect the MHSAPM C2 Connector.
Measure the resistance of the Driver Seat Recliner Position Signal circuit between
the Recliner Position Sensor and the MHSAPM connectors.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Driver Seat Recliner Position Signal circuit for an
open.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
4
Turn ignition off.
Disconnect the MHSAPM C2 connector.
Disconnect the Driver Recliner Seat Position Sensor connector.
Measure the resistance of the Driver Sear Recliner Position Signal circuit to ground.
Is the resistance below 1000 ohms?
All
Yes
→ Repair the Driver Seat Recliner Position Signal circuit a short to
ground.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Go To 5
5
Turn ignition off.
Ensure the MHSAPM is fully connected before proceeding.
Disconnect the Driver Recliner Seat Position Sensor Connector.
Connect a jumper wire between Driver Seat Sensor 5 volt Supply and Driver Seat
Recliner Position Signal circuits.
Turn ignition on.
With the DRBIII
t select MHSAPM Sensors.
Read the Driver Seat Recliner Sensor voltage.
Is the voltage above 4.5 volts?
All
Yes
→ Replace the Seat Back Assembly.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Go To 6
6
If there are no possible causes remaining, view repair.
All
Repair
Replace the Memory/Heated Seat Adjustable Pedal Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
7
Turn ignition off.
Disconnect the MHSAPM C2 connector.
Measure the resistance of the Driver Seat Sensor 5 volt supply circuit to body ground.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Driver Seat Sensor 5 Volt Supply circuit for a short to
ground.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Go To 8
984
POWER SEATS
DRIVER RECLINER SENSOR OUT OF RANGE LOW - MHSAPM —
Continued
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