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

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

136

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. 

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

137

TEST TC-27A

CONTINUED - REPAIRING THROTTLE POSITION SENSOR VOLTAGE HIGH

2.7L

FIG. 1

3.5L

FIG. 2

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

138

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.*

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

139