Chrysler Town, Dodge Caravan. Manual — part 862
TEST
ACTION
APPLICABILITY
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
684
MEMORY SEAT
HORIZONTAL FORWARD POSITION STUCK —
Continued
Symptom:
HORIZONTAL REARWARD POSITION STUCK
When Monitored and Set Condition:
HORIZONTAL REARWARD POSITION STUCK
When Monitored:
Continuously when the PCI bus is active.
Set Condition:
If the seat switch is active for 30 seconds, this code will set and the
Memory Seat Mirror Module will ignore the input until the state has changed. Once the
stuck condition is removed, the seat will resume to normal operation. Code will remain for
50 ignition cycles.
POSSIBLE CAUSES
STORED DIAGNOSTIC TROUBLE CODE
DRIVER POWER SEAT SWITCH
SEAT HORIZONTAL REARWARD SWITCH SENSE WIRE SHORT TO VOLTAGE
MEMORY SEAT MIRROR MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase the DTC from Memory Seat Mirror Module.
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 DRB check for the same DTC to reset in the MSMM.
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 MEMORY SYSTEM VERIFICATION TEST - VER 1.
2
Disconnect the Power Seat Switch connector.
Measure the voltage of the Seat Horizontal Rearward Switch Sense circuit.
Is there any voltage present?
All
Yes
→ Go To 3
No
→ Replace the Power Seat Switch.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
685
MEMORY SEAT
TEST
ACTION
APPLICABILITY
3
Disconnect the Power Seat Switch connector.
Disconnect the Memory Seat Mirror Module C1 connector.
Turn the ignition on.
Measure the voltage of the Seat Horizontal Rearward Switch Sense circuit to
ground..
Is there any voltage present?
All
Yes
→ Repair the Seat Horizontal Rearward Switch Sense wire for a
short to voltage.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No
→ Go To 4
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
686
MEMORY SEAT
HORIZONTAL REARWARD POSITION STUCK —
Continued
Symptom:
HORIZONTAL SENSOR OUT OF RANGE HIGH
When Monitored and Set Condition:
HORIZONTAL SENSOR OUT OF RANGE HIGH
When Monitored:
Continuously when the PCI bus is active.
Set Condition:
This condition is immediately set when the seat motor potentiometer
feeds a value higher than the Memory Seat Mirror Module has stored in EEPROM. Code
will remain for 50 ignition cycles.
POSSIBLE CAUSES
MEMORY SEAT MIRROR MODULE SENSOR GROUND OPEN
SEAT SENSOR GROUND WIRE OPEN
5 VOLT SUPPLY SHORTED HIGH
CHECK VOLTAGE ON HORIZONTAL POSITION SIGNAL CIRCUIT
HORIZONTAL SENSOR HIGH
CHECK HORIZONTAL SENSOR SHORT TO MOTOR
MEMORY SEAT MIRROR MODULE HORIZONTAL SENSOR HIGH
STORED DIAGNOSTIC TROUBLE CODE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase the DTC from Memory Seat Mirror Module.
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 DRB check for the same DTC to reset in the MSMM.
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 MEMORY SYSTEM VERIFICATION TEST - VER 1.
2
Turn ignition off.
Disconnect the Driver Power Seat Horizontal Position Sensor connector.
Measure the resistance of the Seat Position Sensor Ground circuit at the driver
power seat Horizontal connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Go To 8
687
MEMORY SEAT
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