Chrysler New Yorker. Manual - part 601

TEST TC-65A

REPAIRING - 2/1 O2S STAYS AT CENTER

Perform TEST DTC Before Proceeding

2/1 LEFT BANK UP

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TEST TC-65A

REPAIRING - 2/1 O2S STAYS AT CENTER

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

START THE ENGINE 

START TEST AND ALLOW IT 

TO 

TC-65A.

REACH NORMAL 

OPERATING

TEMPERATURE. 

USING THE DRB IN 
ACTUATOR TESTS, 

WITH THE DRB, READ 

IS THE 2/1 OXYGEN 

NO 

CONTINUE TEST 

SET THE ENGINE RPM

THE 2/1 OXYGEN 

SENSOR STATE

TC-65A ON THE

TO 1500.

SENSOR STATE. 

SWITCHING? 

NEXT PAGE.

YES

WIGGLE THE 2/1

AT ANY TIME DOES 

REPAIR THE OPEN 

OXYGEN SENSOR 

WHILE WIGGLING THE

THE 2/1 OXYGEN 

YES HARNESS OR CONNECTOR

CONNECTOR AND

HARNESS, MONITOR

SENSOR STATE STAY 

THAT CAUSED THE

HARNESS. 

THE DRB DISPLAY. 

LOCKED AT CENTER?

OXYGEN SENSOR STATE
TO STAY AT CENTER.* 

NO 

AT THIS TIME, THE

USING THE

CONDITION REQUIRED 

SCHEMATIC AS A

WERE ANY PROBLEMS 

YES

REPAIR AS 

TO SET THE TROUBLE

GUIDE, INSPECT THE

FOUND? 

NECESSARY.*

CODE IS NOT PRESENT. 

WIRING AND

CONNECTORS.

NO 

TEST COMPLETE.* 

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TEST TC-65A

CONTINUED - REPAIRING - 2/1 O2S STAYS AT CENTER

2/1 LEFT BANK UP

FIG. 1

2/1 LEFT BANK UP

FIG. 2

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TEST TC-65A

CONTINUED - REPAIRING - 2/1 O2S STAYS AT CENTER

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-65A 

CONTINUED FROM 

THE PREVIOUS 

TURN IGNITION OFF. 

PAGE.

DISCONNECT THE

IS ANY TERMINAL 

2/1 O2 SENSOR 

CORRODED, DAMAGED, 

YES

REPAIR OR REPLACE

HARNESS CONNECTOR.** 

PUSHED OUT OR 

AS NECESSARY.*

MISWIRED?

SEE GENERAL INFO 4.4

NO 

REPAIR THE 2/1 O2 

USING AN OHMMETER,

...GROUND CIRCUIT

IS THE RESISTANCE 

YES

SENSOR GROUND 

MEASURE BETWEEN THE

AND GROUND.

ABOVE 5.0 OHMS?

CIRCUIT FOR AN 

2/1 O2 SENSOR...

OPEN.* 

FIG. 1

NO 

KEY ON, CONNECT A

WITH THE DRB IN 

JUMPER WIRE BETWEEN

SENSORS, READ THE

IS THE VOLTAGE

YES

REPLACE THE 2/1 O2 

THE 2/1 O2 SENSOR 

2/1 O2 SENSOR 

ABOVE 1.0 VOLT?

SENSOR.* 

SIGNAL CKT AND B(+).

VOLTAGE. 

FIG. 1

NO 

KEY OFF, DISCONNECT 

THE POWERTRAIN DISCONNECT 

THE

CONTROL MODULE JUMPER 

WIRE.

HARNESS CONNECTOR.** 
SEE GENERAL INFO 4.1

USING AN OHMMETER,

..FROM THE 2/1 O2 

MEASURE THE 2/1 O2 

SENSOR CONNECTOR TO 

IS THE RESISTANCE 

YES

REPLACE THE

SENSOR SIGNAL 

THE PCM CONNECTOR. 

BELOW 5.0 OHMS?

POWERTRAIN CONTROL

CIRCUIT... 

MODULE.* 

FIG. 2

NO 

REPAIR THE OPEN 

2/1 O2 SENSOR 

SIGNAL CIRCUIT.*

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