Chrysler New Yorker. Manual - part 670

TEST NTC-21A

CONTINUED - CHECKING OIL PRESSURE SENDING UNIT

FIG. 1

FIG. 2

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

516

TEST NTC-21A

CONTINUED - CHECKING OIL PRESSURE SENDING UNIT

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST NTC-21A

DISCONNECT THE

CONTINUED FROM INSTRUMENT 

THE PREVIOUS CLUSTER.** 

PAGE.

FIG. 1

WITH AN OHMMETER,

REPAIR THE OIL

MEASURE THE OIL

IS THE RESISTANCE 

YES

PRESSURE SWITCH 

PRESSURE SWITCH 

BELOW 5.0 OHMS?

SENSE CIRCUIT FOR

SENSE CIRCUIT TO 

A SHORT TO 

GND. FIG. 

2

GROUND.* 

NO 

REPAIR OR REPLACE

THE INSTRUMENT 

CLUSTER AS 

NECESSARY.*

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

517

TEST NTC-21B

CHECKING OIL PRESSURE SENDING UNIT

Perform TEST NTC-21A Before Proceeding

FIG. 1

FIG. 2

FIG. 3

FIG. 4

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

518

TEST NTC-21B

CHECKING OIL PRESSURE SENDING UNIT

Perform TEST NTC-21A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

DISCONNECT THE OIL

START TEST PRESSURE 

SWITCH 

NTC-21B. CONNECTOR NEXT 

TO 

THE OIL FILTER.**

FIG. 1

CONNECT A JUMPER 
WIRE BETWEEN THE

DID THE OIL

YES

REPLACE THE OIL

OIL PRESSURE WARNING LAMP 

PRESSURE 

SWITCH.* 

SWITCH SENSE CKT

ILLUMINATE?

AND TO GND. FIG. 2

NO 

NOTE: KEEP THE

DISCONNECT THE

JUMPER WIRE 

INSTRUMENT 

CONNECTED DURING CLUSTER.** 

THE NEXT STEP.

FIG. 3

WITH AN OHMMETER,

REPAIR THE OPEN OIL

MEASURE THE OIL

IS 

THE RESISTANCE NO PRESSURE 

SWITCH 

PRESSURE SWITCH 

BELOW 5.0 OHMS?

SENSE CKT BETWEEN

SENSE CIRCUIT TO 

THE SWITCH AND THE

GND. FIG. 

4

INSTRUMENT CLUSTER.*

YES

REPAIR OR REPLACE

THE INSTRUMENT 

CLUSTER AS 
NECESSARY.*

N

O

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

519