Chrysler New Yorker. Manual — part 687

TEST NS-5A

CONTINUED - CHECKING THE FUEL PUMP

FIG. 1

N

O

S

T

A
R

T

T

E
S

T

S

584

TEST NS-5A

CONTINUED - CHECKING THE FUEL PUMP

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

TEST NS-5A

CONTINUED FROM

THE PREVIOUS

PAGE.

USING APPROPRIATE

DISCONNECT FUEL PUMP

SERVICE MANUAL MODULE

HARNESS

PROCEDURE, REMOVE

CONNECTOR.**

FUEL TANK AND...

SEE GENERAL INFO 4.5

CAUTION: IT IS

CRITICAL THAT THE

FUEL PUMP CONNECTOR

HAS A CLEAN TIGHT

CONNECTION.**

IGNITION ON.

USING A 12 VOLT TEST

REPAIR THE OPEN

LIGHT, CHECK THE

DID THE LIGHT

NO

FUEL PUMP RELAY

WITH THE DRB,

FUEL PUMP RELAY

ILLUMINATE?

OUTPUT CIRCUIT IN

ACTUATE THE FUEL

OUTPUT CIRCUIT.

THE FUEL PUMP

SYSTEM.

FIG. 1

JUMPER HARNESS.*

YES

REPAIR THE HIGH

NO

RESISTANCE IN THE

WAS IT BRIGHT?

FUEL PUMP OUTPUT

CIRCUIT IN JUMPER

HARNESS.*

YES

CONNECT A 12 VOLT

REPAIR THE OPEN

TEST LIGHT FROM THE

DID THE LIGHT

NO

FUEL PUMP GROUND

FUEL PUMP RELAY

ILLUMINATE?

CIRCUIT IN JUMPER

OUTPUT TO THE

HARNESS.*

GROUND.

FIG. 1

YES

REPAIR THE HIGH

NO

RESISTANCE IN THE

WAS IT BRIGHT?

GROUND CIRCUIT IN

JUMPER HARNESS.*

YES

REPLACE THE FUEL

PUMP MODULE.*

N

O

S

T

A
R

T

T

E
S

T

S

585

TEST NS-6A

REPAIRING A

(

NO RESPONSE

(

CONDITION

Perform TEST DTC Before Proceeding

2.7L

FIG. 1

3.5L

FIG. 2

FIG. 3

N

O

S

T

A
R

T

T

E
S

T

S

586

TEST NS-6A

REPAIRING A

(

NO RESPONSE

(

CONDITION

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

START TEST

NOTE: ENSURE PCM

DOES THE VEHICLE

YES

PERFORM TEST

NS-6A. CONNECTORS

ARE

START? NS-6B.

SECURE

.

NO

DISCONNECT THE TP

WITH A VOLTMETER,

REPAIR THE HIGH

SENSOR CONNECTOR.**

MEASURE THE TP

IS THE VOLTAGE

YES

RESISTANCE IN THE

SENSOR 5-VOLT

ABOVE 6.0 VOLTS?

PCM GROUND

TURN IGNITION ON.

SUPPLY CIRCUIT.

CIRCUITS.*

SEE GENERAL INFO 4.4

FIG. 1 OR 2

NO

KEY OFF. DISCONNECT

KEY ON. WITH A 12

REPAIR THE OPEN

THE POWERTRAIN

VOLT TEST LIGHT,

DID THE LIGHT

NO

FUSED IGN SWITCH

CONTROL MODULE CHECK THE FUSED

ILLUMINATE?

OUTPUT

CKT BETWEEN

HARNESS CONNECTOR.** IGN SWITCH

OUTPUT

PCM & IGN SWITCH

SEE GENERAL INFO 4.1

CKT. FIG. 3

(CHECK FUSE).*

YES

REPAIR THE HIGH

NO

RESISTANCE IN THE

WAS IT BRIGHT?

IGNITION SWITCH
OUTPUT CIRCUIT.*

YES

WITH A 12 VOLT TEST

LIGHT, CHECK THE

DID THE LIGHT

NO

REPAIR THE OPEN

FUSED B(+) CIRCUIT.

ILLUMINATE?

FUSED B(+)
CIRCUIT.**

FIG. 3

YES

REPAIR THE HIGH

NO

RESISTANCE IN THE

WAS IT BRIGHT?

FUSED B(+)
CIRCUIT.*

YES

PERFORM TEST

NS-6B.

N

O

S

T

A
R

T

T

E
S

T

S

587