Chrysler New Yorker. Manual — part 676

TEST SC-1D

CONTINUED - CHECKING SPEED CONTROL OPERATION

FIG. 1

FIG. 2

S
P
E
E

D

C

O

N

T

R

O

L

T

E
S

T

S

540

TEST SC-1D

CONTINUED - CHECKING SPEED CONTROL OPERATION

*Perform Verification TEST VER-4A.

**Check connectors - Clean / repair as necessary.

TEST SC-1D

KEY OFF, DISCONNECT

CONTINUED FROM THE PCM HARNESS

THE PREVIOUS CONNECTOR.**

PAGE.

SEE GENERAL INFO 4.1

MEASURE THE

REPAIR THE OPEN

USE AN OHMMETER IN

RESISTANCE OF THE

IS THE RESISTANCE

NO

S/C POWER SUPPLY

THE FOLLOWING

S/C POWER SUPPLY BELOW 5.0 OHMS?

CIRCUIT,

PCM TO

STEP.

CIRCUIT, PCM TO

BRAKE SWITCH.*

BRAKE SWITCH. FIG. 1

YES

USING AN OHMMETER,

REPAIR THE SHORT

MEASURE THE S/C

IS THE RESISTANCE

YES

TO GROUND IN THE

POWER SUPPLY BELOW 5.0 OHMS?

S/C POWER SUPPLY

CIRCUIT TO GROUND.

CIRCUIT.*

FIG. 2

NO

REPLACE THE

POWERTRAIN CONTROL

MODULE.*

S
P
E
E

D

C

O

N

T

R

O

L

T

E
S

T

S

541

TEST SC-2A

CHECKING SPEED CONTROL ON/OFF SWITCH

Perform TEST SC-1A Before Proceeding

FIG. 1

FIG. 2

S
P
E
E

D

C

O

N

T

R

O

L

T

E
S

T

S

542

TEST SC-2A

CHECKING SPEED CONTROL ON/OFF SWITCH

Perform TEST SC-1A Before Proceeding

*Perform Verification TEST VER-4A.

**Check connectors - Clean / repair as necessary.

KEY ON, WITH THE

START TEST DRB,

READ THE

DOES THE DRB

YES

CONTINUE TEST

SC-2A. SPEED CONTROL

DISPLAY SC/SW

SC-2A ON

THE

SWITCH VOLTAGE. ABOVE 4.0 VOLTS? NEXT

PAGE.*

NO

DISCONNECT THE SPEED

CONTROL ON/OFF/SET

WITH THE DRB, READ

DOES THE DRB

YES

REPLACE THE SPEED

SWITCH.**

THE SPEED CONTROL

DISPLAY SC/SW

CONTROL ON/OFF/SET

SWITCH VOLTAGE.

ABOVE 4.0 VOLTS?

SWITCH.*

SEE GENERAL INFO 4.7

NO

DISCONNECT THE S/C

REPLACE THE SPEED

RESUME/COAST/CANCEL

WITH THE DRB, READ

DOES THE DRB

YES

CONTROL

SWITCH HARNESS

THE SPEED CONTROL

DISPLAY SC/SW

RESUME/COAST/CANCEL

CONNECTOR.**SEE

SWITCH VOLTAGE.

ABOVE 4.0 VOLTS?

SWITCH.*

GENERAL INFO 4.7

NO

KEY OFF, DISCONNECT

USING AN OHMMETER,

REPAIR THE SPEED

THE POWERTRAIN MEASURE THE S/C

IS

THE RESISTANCE

YES

CONTROL SWITCH

CONTROL MODULE

SWITCH SIGNAL CKT

BELOW 5.0 OHMS?

SIGNAL CIRCUIT FOR

HARNESS CONNECTOR.**

FROM S/C SW TO GND.

A SHORT TO

SEE GENERAL INFO 4.1

FIG. 1

GROUND.*

NO

USING AN OHMMETER,

REPAIR THE OPEN IN

MEASURE THE

IS THE RESISTANCE

NO

THE SPEED CONTROL

RESISTANCE OF THE

BELOW 5.0 OHMS?

SWITCH SIGNAL

S/C SWITCH SIGNAL

CIRCUIT.*

SIGNAL CKT. FIG. 2

YES

USING AN OHMMETER,

REPAIR THE SPEED

TURN THE IGNITION

MEASURE BETWEEN THE

IS THE RESISTANCE

YES

CONTROL SWITCH

OFF.

S/C SWITCH SIGNAL

BELOW 5.0 OHMS?

SIGNAL CKT SHORTED

WAIT ONE MINUTE.

CKT AND SENSOR

TO THE SENSOR

GROUND. FIG. 1

GROUND CKT.*

NO

REPLACE THE

POWERTRAIN CONTROL

MODULE.*

S
P
E
E

D

C

O

N

T

R

O

L

T

E
S

T

S

543