Chrysler New Yorker. Manual - part 631

TEST TC-127A

REPAIRING - 2/2 O2S SHORTED TO VOLTAGE

Perform TEST DTC Before Proceeding

2/2 LEFT BANK DOWN

2/2 LEFT BANK DOWN

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TEST TC-127A

REPAIRING - 2/2 O2S SHORTED TO VOLTAGE

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

START TEST 

TC-127A. START THE ENGINE.

ALLOW THE ENGINE START ENGINE.
TO REACH NORMAL 

WITH THE DRB IN 

IS THE SUSPECT O2 

NO 

CONTINUE TEST 

OPERATING

SENSORS, READ THE

SENSOR VOLTAGE

TC-127 ON THE

TEMPERATURE. 

SUSPECT O2 SENSOR 

ABOVE 1.2 VOLTS? 

NEXT PAGE.

VOLTAGE. 

YES

IS ANY TERMINAL 

DISCONNECT THE

CORRODED, DAMAGED, 

YES

REPAIR OR REPLACE

TURN IGNITION OFF. 

SUSPECT O2 SENSOR 

PUSHED OUT OR 

AS NECESSARY.*

HARNESS CONNECTOR. MISWIRED?

NO 

WITH THE DRB IN 

SENSORS,  READ THE

IS THE SUSPECT O2 

NO 

REPLACE THE

START ENGINE.

SUSPECT O2 SENSOR 

SENSOR VOLTAGE

SUSPECT OXYGEN 

VOLTAGE. ABOVE 1.2 VOLTS? SENSOR.* 

YES

REPAIR THE SUSPECT

OXYGEN SENSOR 

SIGNAL CIRCUIT FOR

A SHORT TO 
VOLTAGE.*

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TEST TC-127A

CONTINUED - REPAIRING - 2/2 O2S SHORTED TO VOLTAGE

2/2 LEFT BANK DOWN

2/2 LEFT BANK DOWN

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TEST TC-127A

CONTINUED - REPAIRING - 2/2 O2S SHORTED TO VOLTAGE

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-127A

WIGGLE THE SUSPECT

CONTINUED FROM OXYGEN 

SENSOR 

THE PREVIOUS CONNECTOR AND

PAGE.

HARNESS. 

WITH THE DRB, 

DID THE

REPAIR THE

MONITOR THE

SUSPECT O2 SENSOR 

YES HARNESS OR CONNECTOR

SUSPECT O2 SENSOR 

VOLTAGE GO ABOVE

THAT HAS THE

VOLTAGE. 

1.2 VOLTS AT ANY

INTERMITTENT SHORT

TIME?

TO VOLTAGE.*

NO 

AT THIS TIME, THE

USING THE

CONDITION REQUIRED 

SCHEMATIC AS A

WERE THERE ANY

YES

REPAIR AS 

TO SET THE TROUBLE

GUIDE, INSPECT THE

PROBLEMS FOUND? 

NECESSARY.*

CODE IS NOT

WIRING AND

PRESENT. CONNECTORS.

NO 

DISCONNECT THE

IS ANY TERMINAL 

SUSPECT O2 SENSOR 

CORRODED, DAMAGED, 

YES

REPAIR AS 

TURN IGNITION OFF. 

AND INSPECT THE

PUSHED OUT OR NECESSARY.*

CONNECTORS.

MISWIRED?

NO 

NOTE:
A FAULTY O2 HEATER 
COULD CAUSE THE O2 

TEST COMPLETE.* 

SENSOR VOLTAGE TO 

REMAIN HIGH.

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