Chrysler New Yorker. Manual — part 686

TEST NS-5A

CHECKING THE FUEL PUMP

Perform TEST NS-2A Before Proceeding

FIG. 1

N

O

S

T

A
R

T

T

E
S

T

S

580

TEST NS-5A

CHECKING THE FUEL PUMP

Perform TEST NS-2A Before Proceeding

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

START TEST

NS-5A.

IGNITION KEY OFF.

USING A 12 VOLT TEST

REPAIR THE FUSED

DISCONNECT THE FUEL

LIGHT, CHECK THE

DID THE LIGHT

NO

B(+) CIRCUIT FOR

PUMP RELAY.**

FUEL PUMP RELAY

ILLUMINATE?

AN OPEN TO

FUSED B(+) CIRCUIT.

SPLICE.*

SEE GENERAL INFO 4.6

FIG. 1

YES

YES

CONTINUE TEST

WAS IT BRIGHT?

NS-5A ON THE

NEXT PAGE.

NO

REPAIR THE HIGH

RESISTANCE IN THE

CIRCUIT.*

N

O

S

T

A
R

T

T

E
S

T

S

581

TEST NS-5A

CONTINUED - CHECKING THE FUEL PUMP

LOCATED UNDER REAR SEAT

FIG. 1

FIG. 2

N

O

S

T

A
R

T

T

E
S

T

S

582

TEST NS-5A

CONTINUED - CHECKING THE FUEL PUMP

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

TEST NS-5A

INSTALL A SUBSTITUTE

CONTINUED FROM RELAY OF

THE SAME

THE PREVIOUS

PART NUMBER FOR THE

PAGE.

FUEL PUMP RELAY.

ATTEMPT TO START

DOES THE ENGINE

YES

REPLACE THE FUEL

THE ENGINE START?

PUMP

RELAY.*

NO

DISCONNECT THE FUEL

REINSTALL THE

PUMP JUMPER HARNESS

ORIGINAL FUEL PUMP

CONNECTOR FROM THE

RELAY. BODY

HARNESS.**
FIG. 1

IGNITION ON.

USING A 12 VOLT TEST

LIGHT, CHECK THE

DID THE LIGHT

NO

REPAIR THE OPEN

WITH THE DRB,

FUEL PUMP RELAY

ILLUMINATE?

FUEL PUMP RELAY

ACTUATE THE FUEL

OUTPUT CIRCUIT.

OUTPUT CIRCUIT.*

SYSTEM.

FIG. 2

YES

NO REPAIR

THE HIGH

WAS IT BRIGHT?

RESISTANCE IN THE

CIRCUIT.*

YES

CONNECT 12 VOLT TEST
LIGHT FROM FUEL PUMP

DID THE LIGHT

NO

REPAIR THE OPEN

RELAY OUTPUT TO FUEL

ILLUMINATE?

GROUND CIRCUIT.*

PUMP GROUND. FIG. 2

YES

NO REPAIR

THE HIGH

WAS IT BRIGHT?

RESISTANCE IN THE

GROUND CIRCUIT.*

YES

RECONNECT FUEL

WITH THE DRB, STOP

PUMP JUMPER

CONTINUE TEST

THE ACTUATION

HARNESS TO BODY

NS-5A ON THE

TEST.

HARNESS. NEXT

PAGE.

FIG. 1

N

O

S

T

A
R

T

T

E
S

T

S

583