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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