Chrysler New Yorker. Manual — part 583

TEST TC-39A

REPAIRING - NO CHANGE IN MAP FROM START TO RUN

Perform TEST DTC Before Proceeding

2.7L

3.5L

FIG. 1

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TEST TC-39A

REPAIRING - NO CHANGE IN MAP FROM START TO RUN

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

WITH THE DRB, READ

START TEST

TURN IGNITION ON.

CODES. IS MAP

YES

PERFORM TEST

TC-39A.

(ENGINE OFF) SENSOR

VOLTAGE TOO

TC-36A

LOW CODE SET?

NO

START ENGINE, AND

DOES THE DRB DISPLAY

ALLOW ENGINE TO

WITH THE DRB, READ

"NO CHANGE IN MAP

YES

CONTINUE TEST

IDLE FOR 30

CODES.

FROM START TO RUN"

TC-39A ON NEXT

SECONDS. WITH

A START RUN

PAGE.

COUNT OF ZERO?

NO

WITH THE ENGINE

NOTE: THE ENGINE

WITH THE DRB, SET

RPM AT 1500, READ

IS STILL RUNNING.

THE ENGINE SPEED

MAP SENSOR

TO 1500 RPM.

VOLTAGE.

WHILE MONITORING THE

REPAIR THE WIRING

VOLTAGE, WIGGLE THE

DID THE ENGINE

YES

OR CONNECTOR

WIRING FROM THE MAP

STALL OR VOLTAGE

DEFECT BETWEEN THE

SENSOR TO PCM.

BECOME ERRATIC?

MAP SENSOR AND THE

SEE GENERAL INFO 4.4

PCM.*

NO

STOP ACTUATION,

AT THIS TIME, THE

WHILE MONITORING DID THE VACUUM

YES

CONDITION REQUIRED

THE DRB DISPLAY,

DROP RAPIDLY BELOW

TO SET THE CODE IS

SNAP THE THROTTLE

3.0?

NOT PRESENT. TEST

OPEN AND CLOSED.

COMPLETE.* FIG.

1

NO

INSPECT CONDITION OF

IS THERE A

REPAIR THE

INTAKE MANIFOLD AND

RESTRICTION OR

YES

RESTRICTED OR

MAP SENSOR VACUUM

DEFECT IN THE

DEFECTIVE VACUUM

PORTS. VACUUM

PORTS?

PORTS.*

SEE GENERAL INFO 4.4

NO

REPLACE THE MAP

SENSOR.*

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169

TEST TC-39A

CONTINUED - REPAIRING - NO CHANGE IN MAP FROM START TO RUN

2.7L

FIG. 1

3.5L

FIG. 2

T

R

O

U
B

L

E

C

O

D

E

T

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S

T

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170

TEST TC-39A

CONTINUED - REPAIRING - NO CHANGE IN MAP FROM START TO RUN

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-39A

IGNITION KEY ON.

CONTINUED FROM (ENGINE OFF)
PREVIOUS PAGE.

REMOVE MAP SENSOR

REMOVE THE

AND INSPECT

WAS THERE A

YES

RESTRICTION AND

FOR VACUUM RESTRICTION?

REINSTALL THE MAP

RESTRICTIONS.

SENSOR.*

SEE GENERAL INFO 4.4

NO

MAP SENSOR 5-VOLT

USING A VOLTMETER,

SUPPLY CIRCUIT AT

IS THE VOLTAGE

NO

REPAIR THE OPEN

MEASURE THE

MAP SENSOR ABOVE 4.0 VOLTS?

MAP SENSOR

5-VOLT

VOLTAGE OF THE...

CONNECTOR.

SUPPLY CIRCUIT.*

FIG. 1 OR 2

YES

REPLACE THE MAP

SENSOR.*

T

R

O

U
B

L

E

C

O

D

E

T

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S

T

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171