Chrysler Pacifica. Manual — part 242
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Driver Power Seat Switch connector.
Disconnect the Driver Door Module C2 connector.
Inspect the Driver Seat Horizontal/Lumbar In Switch MUX circuit for a partial short
to ground or to another circuit in the seat switch harness.
Were there any problems found?
All
Yes
→ Repair the Driver Seat Horizontal/Lumbar In Switch MUX circuit
as necessary.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1.
965
POWER SEATS
DRIVER HORIZONTAL SWITCH STUCK - DDM —
Continued
Symptom:
DRIVER REAR RISER AND PEDAL BACK SWITCH SHORTED -
DDM
When Monitored and Set Condition:
DRIVER REAR RISER AND PEDAL BACK SWITCH SHORTED - DDM
When Monitored:
Continuously.
Set Condition:
If the MUX circuit is under 0.10 volt for over 10 seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
DRIVER POWER SEAT SWITCH
DRIVER SEAT REAR RISER/PEDAL BACK SWITCH MUX
DRIVER DOOR MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase DTCs.
Cycle the ignition switch from Off to Run.
Operate the Seat Switch in all positions several times.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display DRIVER REAR RISER AND PEDAL BACK SWITCH
SHORTED?
All
Yes
→ Go To 2
No
→ The condition that caused this code to set is not present at this
time.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
2
Disconnect the Driver Power Seat Switch connector.
Turn the ignition on.
With the DRBIII
t, erase DTCs.
Cycle the ignition switch from Off to Run and wait 10 seconds.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display DRIVER REAR RISER AND PEDAL BACK SWITCH
SHORTED?
All
Yes
→ Go To 3
No
→ Replace the Driver Power Seat Switch.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
966
POWER SEATS
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Driver Power Seat Switch connector.
Disconnect the Driver Door Module C2 connector.
Inspect the Driver Seat Rear Riser/Pedal Back Switch MUX circuit for a short to
ground or to another circuit in the seat switch harness.
Were there any problems found?
All
Yes
→ Repair the Driver Seat Rear Riser/Pedal Back Switch MUX
circuit as necessary.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1.
967
POWER SEATS
DRIVER REAR RISER AND PEDAL BACK SWITCH SHORTED - DDM —
Continued
Symptom:
DRIVER REAR RISER SENSOR OUT OF RANGE HIGH - MHSAPM
When Monitored and Set Condition:
DRIVER REAR RISER SENSOR OUT OF RANGE HIGH - MHSAPM
When Monitored:
Contiguously with the PCI bus active.
Set Condition:
This condition is immediately set when the seat motor potentiometer
feeds a value higher than the Memory/Heated Seat Adjustable Pedal Module has stored in
EEPROM. Code will remain for 50 ignition cycles.
POSSIBLE CAUSES
DRIVER SEAT POSITION SENSOR GROUND WIRE OPEN
MEMORY/HEATED SEAT ADJUSTABLE PEDAL MODULE
DRIVER SEAT SENSOR 5 VOLT SUPPLY SHORTED HIGH
DRIVER SEAT REAR RISER POSITION SIGNAL CIRCUIT SHORT TO VOLTAGE
DRIVER REAR RISER SEAT SENSOR HIGH
DRIVER REAR RISER SEAT SENSOR SHORT TO MOTOR
MEMORY/HEATED SEAT ADJUSTABLE MODULE
STORED DIAGNOSTIC TROUBLE CODE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase the DTC from Memory/Heated Seat Adjustable Pedal
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 DRBIII
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
Turn ignition off.
Disconnect the Driver Rear Riser Seat Position Sensor connector.
Measure the resistance of the Driver Seat Position Sensor Ground circuit at the
driver rear riser seat position sensor connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Go To 8
968
POWER SEATS
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