Chrysler Voyager. Manual — part 312

Symptom:

FRONT RISER SENSOR OUT OF RANGE HIGH

When Monitored and Set Condition:

FRONT RISER 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 POSITION SENSOR GROUND WIRE OPEN

5 VOLT SUPPLY SHORTED HIGH

CHECK VOLTAGE ON FRONT RISER POSITION SIGNAL CIRCUIT

FRONT RISER SENSOR HIGH

FRONT RISER SENSOR SHORT TO MOTOR

MEMORY SEAT MIRROR MODULE FRONT RISER 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 Front Riser Position Sensor connector.
Measure the resistance of the Seat Position Sensor Ground circuit at the Driver
Power Seat Front Riser Position Sensor connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 3

No

→ Go To 8

675

MEMORY SEAT

TEST

ACTION

APPLICABILITY

3

Disconnect the Driver Power Seat Front Riser Position Sensor connector.
Measure the voltage between Seat Sensor 5 volt supply circuit and ground.
Turn ignition on.
Is the voltage above 5.5 volts?

All

Yes

→ Repair the Seat Sensor 5 Volt Supply circuit for a short to battery.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Turn ignition off.
Disconnect the Driver Power Seat Front Riser Position Sensor Connector.
Disconnect the Memory Seat Mirror Module C1 Connector.
Turn ignition on.
Measure the voltage between Front Riser Position Signal circuit and ground.
Is the voltage above 0.2 volts?

All

Yes

→ Repair the Front Riser Position Signal circuit for a short to

voltage.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn ignition off.
Disconnect the Driver Power Seat Front Riser Position Sensor Connector.
Ensure the Memory Seat Mirror Module is fully connected before proceeding.
Turn ignition on.
With the DRBIII

t in Body Memory Seat Sensors

Read the Front Riser Position Sensor voltage.
Is the voltage above 0.2 volts?

All

Yes

→ Go To 6

No

→ Replace the Seat Track Assembly.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

6

Ensure all seat and sensor connectors are connected and front riser motor is
operational.
With the DRBIII

t in Body Memory Seat Sensors monitor the Front Riser Position

Sensor while operating the front riser 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 Track Assembly.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 7

7

If there are no possible causes remaining, view repair.

All

Repair

Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

676

MEMORY SEAT

FRONT RISER SENSOR OUT OF RANGE HIGH —

Continued

TEST

ACTION

APPLICABILITY

8

Turn ignition off.
Disconnect the Memory Seat Mirror Module C2 connector.
Disconnect the Driver Power Seat Front Riser Position Sensor connector.
Measure the resistance of the Seat Position Sensor Ground wire between the Driver
Power Seat Front Riser Position Sensor connector and the MSMM C2 connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Replace the Memory Seat Mirror Module.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Repair the open Seat Position Sensor Ground wire.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

677

MEMORY SEAT

FRONT RISER SENSOR OUT OF RANGE HIGH —

Continued

Symptom:

FRONT RISER SENSOR OUT OF RANGE LOW

When Monitored and Set Condition:

FRONT RISER SENSOR OUT OF RANGE LOW

When Monitored:

Continuously when the PCI bus is active.

Set Condition:

This code is immediately set when the seat motor potentiometer feeds a

value lower than the Memory Seat Mirror Module has stored in EEPROM. Code will
remain for 50 ignition cycles.

POSSIBLE CAUSES

MEMORY SEAT MIRROR MODULE 5 VOLT SUPPLY

SEAT 5 VOLT SUPPLY WIRE SHORT TO GROUND

SEAT SENSOR 5 VOLT SUPPLY WIRE OPEN

FRONT RISER POSITION SIGNAL CIRCUIT OPEN

FRONT RISER POSITION SIGNAL CIRCUIT SHORT TO GROUND

FRONT RISER SENSOR LOW

MEMORY SEAT MIRROR MODULE FRONT RISER LOW

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

Ensure the Memory Seat Mirror Module is fully connected before proceeding.
Disconnect the Driver Power Seat Front Riser Position Sensor connector.
Turn ignition on.
Measure the voltage of the Seat Sensor 5 Volt Supply circuit at front riser connector.
Is the voltage above 4.5 volts?

All

Yes

→ Go To 3

No

→ Go To 7

678

MEMORY SEAT