Chrysler New Yorker. Manual - part 665

TEST NTC-11A

CONTINUED - CHECKING THE OXYGEN SENSOR HEATER

FIG. 1

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TEST NTC-11A

CONTINUED - CHECKING THE OXYGEN SENSOR HEATER

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST NTC-11A

NOTE: USE

CONTINUED FROM APPROPRIATE

THE PREVIOUS CONNECTOR FOR THE

PAGE.

O2 SENSOR THAT YOU

ARE TESTING. 

NOTE: THE DRB IS 

ARE THE 1/2, 2/2

WITH THE DRB, 

STILL ACTUATING

WITH THE DRB, READ 

O2 SENSOR VOLTAGES 

NO 

STOP THE

THE O2 SENSOR 

THE 1/2, 2/2 O2 BETWEEN

ACTUATION TEST.

HEATER TEST.

SENSOR VOLTAGE(S).

0.4 AND 0.6 VOLT?

TEST PASSED.

YES

NOTE: THE O2 SENSOR 

NOTE: THE DRB IS 

VOLTAGE STAYING

STILL ACTUATING

BETWEEN 0.4V & 0.6V THE O2 

SENSOR 

INDICATES A PROBLEM

HEATER TEST.

WITH THAT SENSOR CKT

DISCONNECT THE 1/2, 

USING A VOLTMETER, 

CHECK FUSES OR 

2/2 O2 SENSOR 

MEASURE THE ASD

IS THE VOLTAGE

NO 

REPAIR THE OPEN 

HARNESS CONNECTOR.** 

RELAY OUTPUT CIRCUIT

ABOVE 10.0 VOLTS? 

ASD RELAY OUTPUT 

IN SENSOR CONNECTOR. 

CIRCUIT.*

SEE GENERAL INFO 4.4

FIG. 1

YES

WITH THE DRB, STOP 
THE ACTUATOR TEST.

USING AN OHMMETER,

REPAIR THE OPEN 

MEASURE THE

GROUND CIRCUIT AND

IS THE RESISTANCE 

NO 

HEATER GROUND 

RESISTANCE BETWEEN

GROUND.

BELOW 5.0 OHMS?

CIRCUIT TO THE

THE HEATER...

APPROPRIATE O2 

FIG. 1

SENSOR.* 

YES

REPLACE THE

APPROPRIATE 1/2 OR 

2/2 O2 SENSOR.* 

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TEST NTC-12A

CHECKING IDLE AIR CONTROL MOTOR

Perform TEST NTC-1A Before Proceeding

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TEST NTC-12A

CHECKING IDLE AIR CONTROL MOTOR

Perform TEST NTC-1A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

WITH THE DRB IN 

WITH THE DRB, 

START TEST 

ACTUATOR TESTS, 

IS THE ENGINE 

YES

STOP ALL TESTS. 

NTC-12A. 

SET ENGINE SPEED

SPEED 1400 RPM

IAC MOTOR IS 

TO 1400 RPM. 

100  RPM? 

OPERATING OK.
TEST PASSED.

NO 

WITH THE DRB, STOP 

INSPECT THE ENGINE 

IS THERE ANY

YES

REPAIR VACUUM 

ALL TESTS. FOR ANY VACUUM 

VACUUM 

LEAKS?  LEAK(S) AS 

LEAK(S). NECESSARY.*

NO 

TURN KEY OFF. 

DISCONNECT THE

DISCONNECT THE IDLE 

POWERTRAIN CONTROL

AIR CONTROL MOTOR

MODULE HARNESS

CONNECTOR.** CONNECTOR (C2).**

SEE GENERAL INFO 4.2

SEE GENERAL INFO 4.1

IAC CONNECTOR

DOES AN 

DETERMINE IF AN 

#1 DRIVER 

YES

REPAIR THE

OPEN CIRCUIT

&

OPEN CIRCUIT

EXISTS BETWEEN... 

PCM CONNECTOR

OPEN CIRCUIT. 

#1 DRIVER.

EXIST? 

NO 

IAC CONNECTOR

DOES AN 

DETERMINE IF AN 

#2 DRIVER 

YES

REPAIR THE

OPEN CIRCUIT

&

OPEN CIRCUIT

EXISTS BETWEEN... 

PCM CONNECTOR

OPEN CIRCUIT. 

#2 DRIVER.

EXIST? 

NO 

IAC CONNECTOR

DOES AN 

DETERMINE IF AN 

#3 DRIVER 

YES

REPAIR THE

OPEN CIRCUIT

&

OPEN CIRCUIT

EXISTS BETWEEN... 

PCM CONNECTOR

OPEN CIRCUIT. 

#3 DRIVER.

EXIST? 

NO 

IAC CONNECTOR

DOES AN 

DETERMINE IF AN 

#4 DRIVER 

YES

REPAIR THE

OPEN CIRCUIT

&

OPEN CIRCUIT

EXISTS BETWEEN... 

PCM CONNECTOR

OPEN CIRCUIT. 

#4 DRIVER.

EXIST? 

NO 

REPLACE THE IDLE 

AIR CONTROL

MOTOR.*

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