Chrysler New Yorker. Manual - part 658

TEST NTC-3A

CHECKING THE PCM POWER AND GROUND CIRCUITS

Perform TEST NTC-1A Before Proceeding

FIG. 1

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468

TEST NTC-3A

CHECKING THE PCM POWER AND GROUND CIRCUITS

Perform TEST NTC-1A Before Proceeding

*Perform Verification TEST VER-1A.

**Check connectors - Clean / repair as necessary.

START TEST TURN 

THE IGNITION 

NTC-3A.

OFF. 

DISCONNECT THE

WITH AN OHMMETER,

IS THE RESISTANCE 

REPAIR THE OPEN IN 

POWERTRAIN CONTROL

MEASURE THE GROUND 

BELOW 5.0 OHMS AT 

NO 

THE GROUND 

MODULE HARNESS

CIRCUITS.

EACH GROUND 

CIRCUIT(S) THAT DID

CONNECTORS.**

CIRCUIT? NOT HAVE 

THE CORRECT

SEE GENERAL INFO 4.1

FIG. 1

OHM READING.*

YES

WITH A VOLTMETER, 
MEASURE THE FUSED

IS THE VOLTAGE

YES

REPAIR THE OPEN 

B(+) CIRCUIT. 

BELOW 10.0 VOLTS? 

FUSED B(+) 
CIRCUIT.*

FIG. 1

NO 

WITH A VOLTMETER, 

REPAIR THE OPEN 

TURN THE IGNITION 

MEASURE THE FUSED

IS THE VOLTAGE

YES

FUSED IGNITION 

ON.

IGNITION SWITCH 

BELOW 10.0 VOLTS? 

SWITCH OUTPUT 

OUTPUT CIRCUIT. 

CIRCUIT.*

FIG. 1

NO 

PCM POWER AND

TURN IGNITION 

RECONNECT THE

GROUND 

SWITCH OFF. 

POWERTRAIN CONTROL

CIRCUITS ARE

MODULE CONNECTORS.

OK.

TEST PASSED.

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469

TEST NTC-4A

CHECKING THE ENGINE VACUUM

Perform TEST NTC-1A Before Proceeding

FIG. 1

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B

L

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470

TEST NTC-4A

CHECKING THE ENGINE VACUUM

Perform TEST NTC-1A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

CONNECT A VACUUM 

START TEST GAUGE TO 

A

NTC-4A.

MANIFOLD VACUUM 

SOURCE.

NOTE: THE NORMAL 

ALLOW THE ENGINE VACUUM 

READING

TO IDLE.

WILL VARY 

ACCORDING TO THE

ALTITUDE.

OBSERVE THE VACUUM IS 

THE VACUUM 

GAUGE READING AT GAUGE READING

NO 

PERFORM TEST 

IDLE.

BETWEEN 13" AND

NTC-13A. 

22" STEADY?

FIG. 1

YES

ENGINE VACUUM 

NORMAL.

TEST PASSED.

N

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T

R

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B

L

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C

O

D

E

T

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S

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471