Chrysler New Yorker. Manual — part 663

TEST NTC-10A

CHECKING THE OXYGEN SENSOR SWITCHING

Perform TEST NTC-1A Before Proceeding

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TEST NTC-10A

CHECKING THE OXYGEN SENSOR SWITCHING

Perform TEST NTC-1A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

NOTE: ENGINE MUST

START TEST BE

RUNNING AND AT

NTC-10A. NORMAL

OPERATING

TEMPERATURE.

CHECK THE MAP

SENSOR OPERATION.

IS THE MAP SENSOR

NO

REPLACE THE MAP

OPERATING

SENSOR.*

REFER TO TEST

CORRECTLY?

NTC-8A.

YES

NOTE: THE 1/2, 2/2

WITH THE DRB, READ

O2 SENSORS

THE O2 SENSOR

ARE THE O2 SENSOR

YES

DO NOT SWITCH

VOLTAGES FOR 10

VOLTAGES SWITCHING

TEST PASSED.

LIKE THE 1/1, 2/1

SECONDS OR MORE.

NORMALLY?

O2 SENSORS.

NO

IS THE 1/1 OR 2/1

YES

PERFORM TEST

O2 SENSOR LOCKED

NTC-10B.

"LEAN"?

NO

INSTALL A FUEL

TURN THE ENGINE

PRESSURE GAUGE TO

WITH THE DRB,

OFF.

THE FUEL LINE. USE

TURN IGNITION ON.

ACTUATE THE ASD

RECOMMENDED SPECIAL

FUEL SYSTEM TEST.

TOOLS IF NECESSARY.

WITH THE DRB, STOP

IF FUEL PUMP AND

ALLOW FUEL

FUEL SYSTEM TEST.

IS THE FUEL

YES

LINES ARE OK,

PRESSURE TO

MONITOR THE

PRESSURE BELOW 10

REPLACE LEAKING

STABILIZE. PRESSURE

GAUGE FOR

PSI?

INJECTOR(S) AS

1 MINUTE.

NECESSARY.*

NO

INSPECT THE AIR

REPAIR OR REPLACE

FILTER AND INLET

WERE THERE ANY

YES

THE AIR INLET

DUCTS FOR

RESTRICTIONS?

SYSTEM AS

RESTRICTION(S).

NECESSARY.*

SEE GENERAL INFO 4.4

NO

PERFORM TEST

NTC-13A.

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TEST NTC-10B

CONTINUED - CHECKING THE OXYGEN SENSOR SWITCHING

FIG. 1

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TEST NTC-10B

CONTINUED - CHECKING THE OXYGEN SENSOR SWITCHING

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

START TEST ALLOW THE ENGINE

NTC-10B. TO

IDLE.

NOTE: REFER TO REPAIR THE

INSPECT THE ENGINE

FIGURE 1 FOR

ARE THERE ANY

YES

ABNORMAL ENGINE

FOR ANY ABNORMAL

INDICATORS OF

ABNORMAL VACUUM

VACUUM CONDITION

VACUUM CONDITIONS.

POSSIBLE ENGINE

CONDITIONS?

AS REQUIRED.*

MECHANICAL PROBLEMS.

NO

WITH THE DRB, READ

IS THE VOLTAGE

NO

CONTINUE TEST

THE OXYGEN SENSOR

BELOW 0.10 VOLT

NTC-10B ON THE

SIGNAL VOLTAGES.

FOR ANY 02 SENSOR?

NEXT PAGE.

YES

DISCONNECT THE O2

SENSOR CONNECTOR

TURN IGNITION OFF.

THAT THE VOLTAGE IS

BELOW 0.10 VOLT.

SEE GENERAL INFO 4.4

DISCONNECT THE

POWERTRAIN CONTROL

MODULE HARNESS

CONNECTOR.**

SEE GENERAL INFO 4.1

USING AN OHMMETER,

SIGNAL CIRCUIT WITH

REPAIR THE OXYGEN

MEASURE THE

THE LOW VOLTAGE AND

IS THE RESISTANCE

YES

SENSOR SIGNAL CKT

RESISTANCE BETWEEN

GROUND.

BELOW 5.0 OHMS?

FOR A SHORT TO

THE O2 SENSOR...

GROUND.*

SEE GENERAL INFO 4.4

NO

REPLACE THE O2

SENSOR(S) THAT ARE
BELOW 0.10 VOLT.*

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491