Chrysler Voyager. Manual — part 319

Symptom:

MEMORY SWITCH INPUT OPEN

When Monitored and Set Condition:

MEMORY SWITCH INPUT OPEN

When Monitored:

Continuously when the PCI bus is active.

Set Condition:

If the Memory Set switch voltage is greater than 4.8 volts for over 10

seconds.

POSSIBLE CAUSES

DTC PRESENT

MEMORY SET SWITCH OPEN

MEMORY SELECT SWITCH MUX OPEN

MEMORY SELECT SWITCH RETURN OPEN

BODY CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, record and erase DTC’s.

Cycle the ignition OFF then back ON.
With the DRBIII

t, read DTCs.

Operate the Memory Set switch several times while monitoring the DRBIII.
Does the DRBIII

t display MEMORY SWITCH INPUT OPEN?

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 Memory Set Switch connector
Turn the ignition on.
Connect a jumper wire between Memory Select Switch MUX and Memory Select
Switch Return.
With the DRBIII

t in Sensors, read the Memory Select SW Volts.

Is the voltage below 1.0 volt?

All

Yes

→ Replace the Memory Set Switch.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 3

703

MEMORY SEAT

TEST

ACTION

APPLICABILITY

3

Turn the ignition off.
Disconnect the Memory Set switch connector.
Disconnect the BCM C1 harness connector.
Measure the resistance of the Memory Select Switch MUX circuit between the
Memory Set Switch connector and the BCM C1 connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 4

No

→ Repair the Memory Select Switch MUX circuit for an open.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

4

Turn the ignition off.
Disconnect the Memory Set switch connector.
Disconnect the BCM C1 harness connector.
Measure the resistance of the Memory Select Switch Return circuit between the
Memory Set Switch connector and the BCM C1 connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 5

No

→ Repair the Memory Select Switch Return circuit for an open.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

5

If there are no possible causes remaining, view repair.

All

Repair

Replace the Body Control Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

704

MEMORY SEAT

MEMORY SWITCH INPUT OPEN —

Continued

Symptom:

MEMORY SWITCH INPUT SHORT

When Monitored and Set Condition:

MEMORY SWITCH INPUT SHORT

When Monitored:

Anytime the Body Control Module is awake.

Set Condition:

If the Memory Set switch voltage is less than 1.35 volts for over 10

seconds.

POSSIBLE CAUSES

DTC PRESENT

MEMORY SET SWITCH SHORTED

MEMORY SELECT SWITCH MUX SHORTED

BODY CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, record and erase DTC’s.

Cycle the ignition OFF then back ON.
With the DRBIII

t, read DTCs.

Operate the Memory Set switch several times while monitoring the DRBIII.
Does the DRBIII

t display MEMORY SWITCH INPUT SHORT?

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 Memory Set Switch connector
Turn the ignition on.
With the DRBIII

t in Sensors, read the Memory Select SW Volts.

Is the voltage above 4.8 volts?

All

Yes

→ Replace the Memory Set Switch.

Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

No

→ Go To 3

3

Turn the ignition off.
Disconnect the Memory Set switch connector.
Disconnect the BCM C1 harness connector.
Measure the resistance between ground and the Memory Select Switch MUX circuit.
Is the resistance above 5.0 ohms?

All

Yes

→ Go To 4

No

→ Repair the Memory Select Switch MUX circuit for a short to

ground.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

705

MEMORY SEAT

TEST

ACTION

APPLICABILITY

4

If there are no possible causes remaining, view repair.

All

Repair

Replace the Body Control Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.

706

MEMORY SEAT

MEMORY SWITCH INPUT SHORT —

Continued