Chrysler New Yorker. Manual - part 676

TEST SC-1D

CONTINUED - CHECKING SPEED CONTROL OPERATION

FIG. 1

FIG. 2

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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.* 

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541

TEST SC-2A

CHECKING SPEED CONTROL ON/OFF SWITCH

Perform TEST SC-1A Before Proceeding

FIG. 1

FIG. 2

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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.* 

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543