Chrysler Pacifica. Manual — part 236
Symptom List:
DRIVER FRONT RISER AND PEDAL FORWARD SWITCH OPEN -
DDM
DRIVER HORIZONTAL AND LUMBAR IN SWITCH OPEN - DDM
DRIVER REAR RISER AND PEDAL BACK SWITCH OPEN - DDM
DRIVER RECLINER AND LUMBAR OUT SWITCH OPEN - DDM
MEMORY SWITCH OPEN - DDM
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be DRIVER FRONT RISER AND
PEDAL FORWARD SWITCH OPEN - DDM.
When Monitored and Set Condition:
DRIVER FRONT RISER AND PEDAL FORWARD SWITCH OPEN - DDM
When Monitored:
Continuously.
Set Condition:
If the switch MUX circuit is over 4.9 volts for over 10 second, this code will
set.
DRIVER HORIZONTAL AND LUMBAR IN SWITCH OPEN - DDM
When Monitored:
Continuously.
Set Condition:
If the switch MUX circuit is over 4.9 volts for over 10 second, this code will
set.
DRIVER REAR RISER AND PEDAL BACK SWITCH OPEN - DDM
When Monitored:
Continuously.
Set Condition:
If the switch MUX circuit is over 4.9 volts for over 10 second, this code will
set.
DRIVER RECLINER AND LUMBAR OUT SWITCH OPEN - DDM
When Monitored:
Continuously.
Set Condition:
If the switch MUX circuit is over 4.9 volts for over 10 second, this code will
set.
MEMORY SWITCH OPEN - DDM
When Monitored:
Continuously.
Set Condition:
If the switch MUX circuit is over 4.9 volts for over 10 second, this code will
set.
POSSIBLE CAUSES
DTC PRESENT
941
POWER SEATS
POSSIBLE CAUSES
DRIVER SEAT SWITCH
SWITCH MUX WIRE OPEN
SWITCH MUX WIRE SHORT TO VOLTAGE
DRIVER DOOR MODULE
SEAT SWITCH MUX RETURN OPEN
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase DTCs.
Cycle the ignition switch from Off to Run.
Operate the switch indicated by the DRBlll
t in all positions several times.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display the same DTC?
All
Yes
→ Go To 2
No
→ The condition that caused this code to set is not present at this
time. Review wiring schematics and inspect related wiring for an
intermittent condition.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t in Sensors, read the Seat Switch voltage of the switch that had the
DTC.
Select the voltage displayed.
All
4.4 to 5.1 volts.
Over 5.2 volts
3
Disconnect the Driver Seat Switch connector.
Turn the ignition on.
Measure the voltage of the Switch MUX circuit indicated by the DRBlll
t and ground.
Is the voltage between 4.4 and 5.1 volts?
All
Yes
→ Go To 4
No
→ Repair the Switch MUX wire for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Driver Seat Switch connector.
Measure the resistance of the Seat Switch MUX Return circuit in the switch
connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Driver Seat Switch.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Repair the Seat Switch MUX Return for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
942
POWER SEATS
DRIVER FRONT RISER AND PEDAL FORWARD SWITCH OPEN - DDM —
Continued
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the Driver Seat Switch connector.
Disconnect the Driver Door Module C2 connector.
Inspect the Seat Switch MUX circuit that had the DTC for a possible short to voltage.
Were there any problems found?
All
Yes
→ Repair the MUX circuit for a short to voltage.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1.
943
POWER SEATS
DRIVER FRONT RISER AND PEDAL FORWARD SWITCH OPEN - DDM —
Continued
Symptom:
DRIVER FRONT RISER AND PEDAL FORWARD SWITCH SHORT -
DDM
When Monitored and Set Condition:
DRIVER FRONT RISER AND PEDAL FORWARD SWITCH SHORT - 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 FRONT RISER/PEDAL FORWARD 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 FRONT RISER AND PEDAL FORWARD
SWITCH SHORT?
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 FRONT RISER AND PEDAL FORWARD
SWITCH SHORT?
All
Yes
→ Go To 3
No
→ Replace the Driver Power Seat Switch.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
944
POWER SEATS
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