Chrysler New Yorker. Manual - part 632

TEST TC-129A

REPAIRING - 1/2 O2S STAYS AT CENTER

Perform TEST DTC Before Proceeding

1/2 RIGHT BANK DOWN

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TEST TC-129A

REPAIRING - 1/2 O2S STAYS AT CENTER

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

START TEST 

TURN IGNITION ON 

TC-129A. (ENGINE OFF).

WITH THE DRB, 

WAIT FOR THE

MONITOR THE 1/2 O2 VOLTAGE READING TO 
SENSOR VOLTAGE FOR

STABILIZE BETWEEN

A FEW MINUTES. 0.4 AND 0.6 VOLTS. 

WITH THE DRB, 

IS THE 1/2 O2 

ACTUATE THE O2 MONITOR THE 1/2 O2 SENSOR 

VOLTAGE

YES

CONTINUE 

TEST 

SENSOR HEATER 

SENSOR VOLTAGE FOR

STILL BETWEEN

TC-129A ON THE

TEST.

UP TO TWO MINUTES. 

0.4 AND 0.6 VOLTS? 

NEXT PAGE.

NO 

DISCONNECT THE

IS ANY TERMINAL 

STOP THE O2 HEATER 

1/2 O2 SENSOR 

CORRODED, DAMAGED, 

YES

REPAIR OR REPLACE

TEST AND TURN 

HARNESS CONNECTOR.** 

PUSHED OUT OR 

AS NECESSARY.*

IGNITION OFF. 

MISWIRED?

SEE GENERAL INFO 4.4

NO 

DISCONNECT THE

IS ANY TERMINAL 

POWERTRAIN CONTROL

CORRODED, DAMAGED, 

YES

REPAIR OR REPLACE

MODULE HARNESS

PUSHED OUT OR 

AS NECESSARY.*

CONNECTORS.**

MISWIRED?

SEE GENERAL INFO 4.1

NO 

REPLACE THE 1/2 O2 

SENSOR.* 

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TEST TC-129A

CONTINUED - REPAIRING - 1/2 O2S STAYS AT CENTER

1/2 RIGHT BANK DOWN

FIG. 1

1/2 RIGHT BANK DOWN

FIG. 2

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TEST TC-129A

CONTINUED - REPAIRING - 1/2 O2S STAYS AT CENTER

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-129A
CONTINUED FROM 

STOP THE O2 HEATER 

THE PREVIOUS TEST 

AND TURN 

PAGE.

IGNITION OFF. 

DISCONNECT THE 1/2

IS ANY TERMINAL 

O2 SENSOR HARNESS

CORRODED, DAMAGED, 

YES

REPAIR OR REPLACE

CONNECTOR.** 

PUSHED OUT OR 

AS NECESSARY.*

MISWIRED?

SEE GENERAL INFO 4.4

NO 

USING AN OHMMETER,

GROUND CIRCUIT AT 

MEASURE THE

THE O2 CONNECTOR

IS THE RESISTANCE 

NO 

REPAIR THE OPEN O2 

RESISTANCE BETWEEN

AND GROUND.

BELOW 5.0 OHMS?

SENSOR GROUND 

THE SENSOR...

FIG. 1

CIRCUIT.*

YES

DISCONNECT THE

IS ANY TERMINAL 

POWERTRAIN CONTROL

CORRODED, DAMAGED, 

YES

REPAIR OR REPLACE

MODULE HARNESS

PUSHED OUT OR 

AS NECESSARY.*

CONNECTORS.**

MISWIRED?

SEE GENERAL INFO 4.1

NO 

USING AN OHMMETER,

THE O2 SENSOR 

MEASURE THE

CONNECTOR AND THE

IS THE RESISTANCE 

NO 

REPAIR THE OPEN O2 

RESISTANCE OF THE

PCM HARNESS

BELOW 5.0 OHMS?

SENSOR SIGNAL 

SENSOR SIGNAL 

CONNECTOR. 

CIRCUIT.*

CIRCUIT BETWEEN... FIG. 

2

YES

RECONNECT THE PCM

THE SENSOR SIGNAL 

WITH THE DRB, READ 

CONNECTORS, TURN CIRCUIT AND SENSOR 

THE 1/2 O2 

VOLTS. 

YES

REPLACE THE 1/2 O2 

IGNITION ON.

GROUND CIRCUIT AT 

SENSOR.* 

CONNECT A JUMPER 

THE O2 CONNECTOR. 

IS THE 1/2 O2 

WIRE BETWEEN... 

FIG. 1

VOLTS BELOW 0.2? 

NO 

REPLACE THE

POWERTRAIN CONTROL

MODULE.* 

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