Chrysler New Yorker. Manual — part 658

TEST NTC-3A

CHECKING THE PCM POWER AND GROUND CIRCUITS

Perform TEST NTC-1A Before Proceeding

FIG. 1

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

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.

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

469

TEST NTC-4A

CHECKING THE ENGINE VACUUM

Perform TEST NTC-1A Before Proceeding

FIG. 1

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

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

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

471