Chrysler Voyager. Manual — part 321

TEST

ACTION

APPLICABILITY

8

Turn ignition off.
Disconnect the Memory Seat Mirror Module C2 connector.
Disconnect the Driver Power Seat Rear Riser Position Sensor connector.
Measure the resistance of the Seat Position Sensor Ground wire between the Rear
Riser Sensor connector and the 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 Sensor Ground wire.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

711

MEMORY SEAT

REAR RISER SENSOR OUT OF RANGE HIGH —

Continued

Symptom:

REAR RISER SENSOR OUT OF RANGE LOW

When Monitored and Set Condition:

REAR RISER SENSOR OUT OF RANGE LOW

When Monitored:

Continuously when the PCI bus is active.

Set Condition:

This condition 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

REAR RISER POSITION SIGNAL CIRCUIT OPEN

REAR RISER POSITION SIGNAL CIRCUIT SHORT TO GROUND

REAR RISER SENSOR LOW

MEMORY SEAT MIRROR MODULE REAR 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 Rear Riser Sensor connector.
Turn ignition on.
Measure the voltage of the Seat Sensor 5 Volt Supply circuit at rear riser connector.
Is the voltage above 4.5 volts?

All

Yes

→ Go To 3

No

→ Go To 7

712

MEMORY SEAT

TEST

ACTION

APPLICABILITY

3

Turn ignition off.
Disconnect the Driver Power Seat Rear Riser Position Sensor Connector.
Disconnect the Memory Seat Mirror Module C1 Connector.
Measure the resistance of the Rear Riser Position Signal circuit between the rear
riser sensor and the Memory Seat Mirror Module connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 4

No

→ Repair the Rear Riser Position Signal circuit for an open.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

4

Turn ignition off.
Disconnect the Memory Seat Mirror Module C1 connector.
Disconnect the Driver Power Seat Rear Riser Position Sensor connector.
Measure the resistance of the Rear Riser Position Signal circuit to ground.
Is the resistance below 1000 ohms?

All

Yes

→ Repair the Rear Riser Position Signal circuit a short to ground.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn ignition off.
Ensure the Memory Seat Mirror Module is fully connected before proceeding.
Disconnect the Driver Power Seat Rear Riser Position Sensor Connector.
Connect a jumper wire between Seat Sensor 5 volt Supply and Rear Riser Position
Signal circuits.
Turn ignition on.
With the DRBIII

t select Body Memory Seat Sensors.

Read the Rear Riser Position Sensor voltage.
Is the voltage above 4.5 volts?

All

Yes

→ Replace the Seat Track Assembly.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 6

6

If there are no possible causes remaining, view repair.

All

Repair

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

7

Turn ignition off.
Disconnect the Memory Seat Mirror Module C2 connector.
Measure the resistance of the Seat Sensor 5 volt supply circuit to body ground.
Is the resistance below 100.0 ohms?

All

Yes

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

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 8

713

MEMORY SEAT

REAR RISER SENSOR OUT OF RANGE LOW —

Continued

TEST

ACTION

APPLICABILITY

8

Turn ignition off.
Disconnect the Memory Seat Mirror Module C2 connector.
Disconnect the Driver Power Seat Rear Riser Position Sensor connector.
Measure the resistance of the Seat Sensor 5 Volt Supply wire between the Rear Riser
Sensor connector and the C2 connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 9

No

→ Repair the Seat Sensor 5 Volt Supply circuit for an open.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

9

If there are no possible cause remaining, view repair.

All

Repair

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

714

MEMORY SEAT

REAR RISER SENSOR OUT OF RANGE LOW —

Continued