Chrysler New Yorker. Manual - part 684

TEST NS-2A

CHECKING FUEL SYSTEM

Perform TEST DTC Before Proceeding

TYPCIAL DRB SCREEN

FIG. 1

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572

TEST NS-2A

CHECKING FUEL SYSTEM

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

ENSURE THE

REPAIR THE

START TEST 

THROTTLE CABLES 

IS THE THROTTLE 

YES

CONDITION THAT 

NS-2A. ARE NOT HOLDING

HELD 

OPEN?

HOLDS THE THROTTLE 

THE THROTTLE OPEN.

BODY OPEN.* 

NO 

WITH THE DRB, READ 

IS THE VOLTAGE

YES

PERFORM TEST 

THROTTLE POSITION 

ABOVE 1.2 VOLTS? 

NTC-7A.

SENSOR VOLTAGE. 

NO 

WITH THE DRB, READ 
THE VEHICLE THEFT

DOES THE DRB

YES

CONTINUE TEST 

SECURITY SYSTEM 

DISPLAY "FUEL ON"? 

NS-2A ON THE

STATUS.

NEXT PAGE.

FIG. 1

NO 

PERFORM VEHICLE

IF BODY 

THEFT SECURITY DIAGNOSTICS DO 

NOT

REPLACE THE

SYSTEM TEST IN THE

FIND A PROBLEM

POWERTRAIN CONTROL

BODY DIAGNOSTIC 

WITH THE THEFT

MODULE.* 

PROCEDURES MANUAL.* 

ALARM... 

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573

TEST NS-2A

CONTINUED - CHECKING FUEL SYSTEM

Perform TEST NS-2A Before Proceeding

2.7L

FIG. 1

3.5L

FIG. 2

FIG. 3

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TEST NS-2A

CONTINUED - CHECKING FUEL SYSTEM

Perform TEST NS-2A Before Proceeding

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

TEST NS-2A

WITH THE DRB, 

CONTINUED FROM 

ACTUATE THE ASD

IS THE FUEL PUMP 

NO 

PERFORM TEST 

THE PREVIOUS 

FUEL SYSTEM TEST 

OPERATING? 

NS-5A. 

PAGE.

AND CHECK FOR FUEL 

PUMP OPERATION. 

YES

WARNING: THE FUEL 

KEY OFF. USING THE

SYSTEM MUST BE 

APPROPRIATE

OPENED AND MAY BE 

SERVICE MANUAL 

UNDER HIGH PRESSURE.

RELIEVE FUEL 

SEE GENERAL INFO 9.1

PRESSURE AND... 

CONNECT A FUEL 

NOTE: FOR THE 2.7L,

PRESSURE GAUGE

RECOMMENDED TOOL IS 

(C-4799-B) TO THE

6539. USE BETWEEN

FUEL RAIL.

THE FUEL RAIL AND

FIG. 1 OR 2

CHASSIS SUPPLY LINE.

NOTE: THE FUEL 

TANK MUST BE AT 

LEAST 1/4 FULL FOR

THE FOLLOWING

TESTS. 

TURN IGNITION ON.

IS THE FUEL 

READ THE FUEL 

PRESSURE ABOVE

YES

REPLACE THE FUEL 

WITH THE DRB, 

PRESSURE GAUGE. 

SPECIFICATION? 

PRESSURE 

ACTUATE THE ASD

REGULATOR/FILTER.* 

FUEL SYSTEM TEST.

FIG. 3

NO 

IS THE FUEL 

PRESSURE BELOW

YES

PERFORM TEST 

SPECIFICATION? NS-4A. 

FIG. 3

NO 

ATTEMPT TO START

DID THE VEHICLE

YES

PERFORM TEST 

STOP 

ACTUATION. VEHICLE. START & STALL

NS-7A. 

REPEATEDLY?

NO 

THE FUEL SYSTEM 

PERFORM TEST 

PRESSURE CHECKS OK 

NS-3A. 

AT THIS TIME.

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