Chrysler New Yorker. Manual — part 575

TEST TC-27A

REPAIRING - THROTTLE POSITION SENSOR VOLTAGE HIGH

Perform TEST DTC Before Proceeding

FIG. 1

FIG. 2

FIG. 3

TYPICAL

FIG. 4

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TEST TC-27A

REPAIRING - THROTTLE POSITION SENSOR VOLTAGE HIGH

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

IS THE GLOBAL GOOD

START TEST

WITH THE DRB, READ

TRIP DISPLAYED AND

YES

CONTINUE TEST

TC-27A.

THE DTC’S.

EQUAL TO 0?

TC-27A ON THE

NEXT PAGE.

FIG. 1 AND 2

NO

WITH THE DRB, READ

IS THE THROTTLE

THE THROTTLE

POSITION SENSOR

YES

CONTINUE TEST

POSITION SENSOR

VOLTAGE ABOVE 4.5

TC-27A ON THE

(TP SENSOR)

VOLTS? NEXT

PAGE.

VOLTAGE.

NO

WHILE MONITORING
THE DRB, SLOWLY

IS THE VOLTAGE

NO

REPLACE THE

OPEN AND CLOSE THE

CHANGE SMOOTH?

THROTTLE POSITION

THROTTLE.

SENSOR.*

YES

WIGGLE THE

WAS THERE ANY

REPAIR THE HARNESS

THROTTLE POSITON

MONITOR THE DRB

CHANGE IN THROTTLE

YES

OR CONNECTOR THAT

SENSOR CONNECTOR

DISPLAY.

POSITION SENSOR

CAUSED THE VOLTAGE

AND HARNESS. VOLTAGE WHEN

CHANGE.*

WIGGLED?

NO

AT THIS TIME, THE

USING THE

CONDITION REQUIRED

SCHEMATIC AS A

WERE ANY PROBLEMS

YES

REPAIR AS

TO SET THE CODE IS

GUIDE, INSPECT THE

FOUND?

NECESSARY.*

NOT PRESENT. WIRING

AND

FIG. 3

CONNECTORS.

NO

USING THE DRB, GO TO

THE CODE ON DTC

REFER TO GENERAL

THE FREEZE FRAME

SCREEN. UTILIZE

INFO 3.3.2 FOR

SCREEN. MAKE SURE

THIS INFO FOR

ADDITIONAL

TEST COMPLETE.*

THE "CAUSED BY DTC"

ADDED DIAGNOSTICS.

INFORMATION ON

HEX CODE MATCHES...

FIG. 4

INTERMITTENT CODES.

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TEST TC-27A

CONTINUED - REPAIRING THROTTLE POSITION SENSOR VOLTAGE HIGH

2.7L

FIG. 1

3.5L

FIG. 2

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TEST TC-27A

CONTINUED - REPAIRING - THROTTLE POSITION SENSOR VOLTAGE HIGH

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-27A

WHILE MONITIORING

CONTINUED FROM

THE DRB, SLOWLY

IS THE VOLTAGE

NO

REPLACE THE

THE PREVIOUS

OPEN AND CLOSE THE

CHANGE SMOOTH?

THROTTLE POSITION

PAGE.

THROTTLE.

SENSOR.*

YES

DISCONNECT THE

MEASURE THE VOLTAGE

REPAIR TP SENSOR

THROTTLE POSITION

AT THE TP SENSOR

IS THE VOLTAGE

YES

SIGNAL CIRCUIT

SENSOR HARNESS

SIGNAL CIRCUIT IN

ABOVE 6.0 VOLTS?

SHORTED TO

CONNECTOR.** THE TPS CONNECTOR.

VOLTAGE.*

SEE GENERAL INFO 4.4

FIG. 1 OR 2

NO

CONNECT A JUMPER USING THE DRB,
WIRE BETWEEN THE

READ THE THROTTLE

IS THE VOLTAGE

YES

REPLACE THE

TP SENSOR SIGNAL

POSITION SENSOR

BELOW 1.0 VOLT?

THROTTLE POSITION

CKT AND SENSOR GND

VOLTAGE.

SENSOR.*

CKT. FIG. 1 OR 2

NO

MOVE THE JUMPER WIRE

FROM THE SENSOR

READ THE THROTTLE

IS THE VOLTAGE

YES

REPAIR THE OPEN TP

GROUND CIRCUIT TO A

POSITION SENSOR

BELOW 1.0 VOLT?

SENSOR GROUND

GOOD ENGINE GROUND.

VOLTAGE.

CIRCUIT.*

FIG. 1 OR 2

NO

DISCONNECT THE

POWERTRAIN CONTROL

TURN IGNITION OFF.

MODULE HARNESS

CONNECTOR.**

SEE GENERAL INFO 4.1

USING AN OHMMETER,

CIRCUIT AT THE TPS

REPAIR THE TP

MEASURE BETWEEN

CONNECTOR.

IS THE RESISTANCE

YES

SENSOR SIGNAL

THE 5-VOLT SUPPLY

BELOW 5.0 OHMS?

CIRCUIT SHORTED TO

CIRCUIT AND THE TP

THE 5-VOLT SUPPLY

SENSOR SIGNAL..

FIG. 1 OR 2

CIRCUIT.*

NO

MEASURE THE

FROM THE TP SENSOR

RESISTANCE OF THE

CONNECTOR TO THE

IS THE RESISTANCE

YES

REPLACE THE

TP SENSOR SIGNAL

PCM CONNECTOR.

BELOW 5.0 OHMS?

POWERTRAIN CONTROL

CIRCUIT...

MODULE.*

FIG. 1 OR 2

NO

REPAIR THE OPEN TP

SENSOR SIGNAL

CIRCUIT.*

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