Chrysler New Yorker. Manual - part 686

TEST NS-5A

CHECKING THE FUEL PUMP

Perform TEST NS-2A Before Proceeding

FIG. 1

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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

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T

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TEST NS-5A

CONTINUED - CHECKING THE FUEL PUMP

LOCATED UNDER REAR SEAT

FIG. 1

FIG. 2

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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

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583