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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