Chrysler Pacifica. Manual — part 245
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 Recliner/Lumbar Out Switch MUX circuit for a partial short
to ground or to another circuit in the seat switch harness.
Were there any problems found?
All
No
→ Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1.
yes
Repair the Driver Seat Recliner/Lumbar Out Switch MUX circuit
as necessary.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
977
POWER SEATS
DRIVER RECLINE SWITCH STUCK - DDM —
Continued
Symptom:
DRIVER RECLINER AND LUMBAR OUT SWITCH SHORT - DDM
When Monitored and Set Condition:
DRIVER RECLINER AND LUMBAR OUT 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
POWER SEAT SWITCH
DRIVER SEAT RECLINER/LUMBAR OUT SWITCH MUX SHORT TO GROUND
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 suspect switch in both positions several times.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display DRIVER RECLINER AND LUMBAR OUT SWITCH
SHORT?
All
Yes
→ Go To 2
No
→ The condition that caused this code to set is not present at this
time. Operate the switch several times to ensure it does not stick.
If the switch ever sticks, replace it.
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 30 seconds.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display DRIVER RECLINER AND LUMBAR SWITCH SHORT?
All
Yes
→ Go To 3
No
→ Replace the Power Seat Switch.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
978
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 Recliner/Lumbar Out 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 Recliner/Lumbar Out Switch MUX circuit
for a short to ground.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER
1.
No
→ Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1.
979
POWER SEATS
DRIVER RECLINER AND LUMBAR OUT SWITCH SHORT - DDM —
Continued
Symptom:
DRIVER RECLINER SENSOR OUT OF RANGE HIGH - MHSAPM
When Monitored and Set Condition:
DRIVER RECLINER SENSOR OUT OF RANGE HIGH - MHSAPM
When Monitored:
Continuously.
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 SENSOR GROUND OPEN
DRIVER SEAT SENSOR 5 VOLT SUPPLY SHORTED HIGH
DRIVER SEAT RECLINER POSITION SIGNAL CIRCUIT SHORT TO VOLTAGE
RECLINER SENSOR HIGH
CHECK RECLINER SENSOR SHORT TO MOTOR
MEMORY/HEATED SEAT ADJUSTABLE PEDAL MODULE RECLINER SENSOR HIGH
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
Turn ignition off.
Disconnect the Driver Recliner Seat Position Sensor connector.
Measure the resistance of the Driver Seat Position Sensor Ground circuit at the
Driver Recliner Seat Position Sensor connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Go To 8
980
POWER SEATS
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