Chrysler New Yorker. Manual - part 576

TEST TC-30A

REPAIRING - ECT SENSOR VOLTAGE TOO LOW

Perform TEST DTC Before Proceeding

FIG. 1

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TEST TC-30A

REPAIRING - ECT SENSOR VOLTAGE TOO LOW

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

NOTE: A SEVERE 

START TEST OVERHEATING

TC-30A.

CONDITION COULD

CAUSE THIS CODE TO 

APPEAR.

START ENGINE. WITH IS 

THE ENGINE 

THE DRB, READ THE

COOLANT

YES

CONTINUE TEST 

ENGINE COOLANT

TEMPERATURE SENSOR 

TC-30A ON THE

TEMPERATURE SENSOR VOLTAGE BELOW

NEXT 

PAGE.

(ECT) VOLTAGE. 0.5 VOLT?

NO 

USE THE SCHEMATIC AS WAS THERE ANY

REPAIR 

THE HARNESS

A GUIDE AND WIGGLE 

MONITOR THE DRB

ENGINE COOLANT

YES

OR CONNECTOR THAT 

ENGINE COOLANT

DISPLAY. 

TEMPERATURE SENSOR 

CAUSED THE VOLTAGE

TEMPERATURE SENSOR VOLTAGE CHANGE?

CHANGE.* 

CONNECTOR & HARNESS. 

NO 

AT THIS TIME, THE

USING THE

CONDITION REQUIRED 

SCHEMATIC AS A

WERE ANY PROBLEMS 

YES

REPAIR AS 

TO SET THE CODE IS 

GUIDE, INSPECT THE

FOUND? 

NECESSARY.*

NOT PRESENT. WIRING 

AND

FIG. 1

CONNECTORS.

NO 

REFER TO GEN INFO 

3.3.2 FOR

INFORMATION ON 

TEST COMPLETE.* 

INACTIVE TROUBLE

CODES. 

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TEST TC-30A

CONTINUED - REPAIRING - ECT SENSOR VOLTAGE TOO LOW

FIG. 1

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TEST TC-30A

CONTINUED - REPAIRING - ECT SENSOR VOLTAGE TOO LOW

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-30A 

KEY ON, ENGINE OFF. 

CONTINUED FROM DISCONNECT 

THE ECT

THE PREVIOUS SENSOR 

HARNESS

PAGE.

CONNECTOR.** 

SEE GENERAL INFO 4.4

WITH THE DRB, READ 

REPLACE THE ENGINE 

ENGINE COOLANT

IS THE ECT SENSOR 

YES

COOLANT

TEMPERATURE SENSOR VOLTAGE ABOVE 4.0

TEMPERATURE

VOLTAGE. VOLTS? 

SENSOR.* 

NO 

KEY OFF, DISCONNECT 

USING AN OHMMETER,

REPAIR THE SENSOR 

THE POWERTRAIN 

MEASURE THE ECT

IS THE RESISTANCE 

YES

SIGNAL CIRCUIT FOR

CONTROL MODULE SENSOR 

SIGNAL BELOW 5.0 OHMS?

A SHORT TO 

HARNESS CONNECTOR.** CIRCUIT TO 

GROUND.

GROUND.* 

SEE GENERAL INFO 4.1

FIG. 1

NO 

USING AN OHMMETER,

ECT SENSOR SIGNAL 

REPAIR THE ECT

MEASURE THE

CIRCUIT AND THE

IS THE RESISTANCE 

YES

SENSOR SIGNAL 

RESISTANCE BETWEEN

ECT SENSOR GROUND 

BELOW 5.0 OHMS?

CIRCUIT SHORTED TO 

THE... CIRCUIT. 

THE ECT SENSOR 

FIG. 1

GROUND CIRCUIT.*

NO 

REPLACE THE

POWERTRAIN CONTROL

MODULE.* 

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