Chrysler New Yorker. Manual - part 615

TEST TC-91A

CONTINUED - REPAIRING - A/C PRESSURE SENSOR VOLTS TOO LOW

FIG. 1

FIG. 2

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TEST TC-91A

CONTINUED - REPAIRING - A/C PRESSURE SENSOR VOLTS TOO LOW

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-91A 

KEY OFF. DISCONNECT 

CONTINUED FROM THE A/C PRESSURE 

THE PREVIOUS SENSOR 

HARNESS

PAGE.

CONNECTOR.** 

SEE GENERAL INFO 4.4

KEY ON. WITH A

AT THE A/C

VOLTMETER MEASURE

PRESSURE SENSOR 

IS THE VOLTAGE

NO 

REPAIR THE OPEN 

THE 5-VOLT 

SUPPLY CONNECTOR. ABOVE 4.9 VOLTS? 

5-VOLT 

SUPPLY 

CIRCUIT... 

CIRCUIT.*

FIG. 1

YES

NOTE: THE A/C

PRESSURE SENSOR 

WITH THE DRB, READ 

IS THE VOLTAGE

YES

REPLACE THE A/C

MUST REMAIN 

THE "A/C HIGH-SIDE

ABOVE 4.5 VOLTS? 

PRESSURE SENSOR.* 

DISCONNECTED FOR

VOLTS".

THE NEXT STEP.

NO 

KEY OFF. DISCONNECT 

WITH AN OHMMETER,

REPAIR THE SENSOR 

THE POWERTRAIN 

MEASURE THE A/C

IS THE RESISTANCE 

YES

SIGNAL CIRCUIT FOR

CONTROL MODULE PRESSURE 

SENSOR BELOW 5.0 OHMS?

A SHORT TO 

HARNESS CONNECTOR.** SIGNAL 

CIRCUIT TO 

GROUND.* 

SEE GENERAL INFO 4.1

GROUND.

FIG. 1

NO 

WITH AN OHMMETER,

REPAIR THE SENSOR 

MEASURE THE A/C

IS THE RESISTANCE 

YES

SIGNAL CIRCUIT

PRESSURE SENSOR 

BELOW 5.0 OHMS?

SHORTED TO THE

SIGNAL AND GND CKTS.

SENSOR GROUND 

FIG. 2

CIRCUIT.*

NO 

REPLACE THE

POWERTRAIN CONTROL

MODULE.* 

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TEST TC-92A

REPAIRING - LOW SPEED FAN CTRL RELAY CIRCUIT

Perform TEST DTC Before Proceeding

FIG. 1

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298

TEST TC-92A

REPAIRING - LOW SPEED FAN CTRL RELAY CIRCUIT

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

WITH THE DRB, 

START TEST 

ACTUATE THE HI/LOW 

IS THE HI/LO SPEED

NO 

CONTINUE TEST 

TC-92A.

SPEED FAN RELAY. 

FAN RELAY

TC-92A ON THE

CLICKING?

NEXT PAGE.

SEE GENERAL INFO 4.6

YES

THE CONDITION

USING THE

REQUIRED TO SET

SCHEMATIC AS A

WERE ANY PROBLEMS 

YES

REPAIR AS 

THE TROUBLE CODE GUIDE, 

INSPECT THE

FOUND? 

NECESSARY.*

IS NOT PRESENT. 

WIRING AND

FIG. 1

CONNECTORS.

NO 

WIGGLE THE WIRING 

NOTE: THE DRB MUST REPAIR 

AS 

HARNESS FROM THE

STILL BE ACTUATING

DID THE WIGGLING 

YES

NECESSARY WHERE

RELAY TO THE

THE HI/LOW SPEED

INTERRUPT THE

WIGGLING CAUSED 

POWERTRAIN CONTROL

FAN RELAY. 

CLICKING?

THE CLICKING TO BE 

MODULE.

INTERRUPTED.*

NO 

REFER TO GEN INFO 

3.3.2 FOR

INFORMATION ON 

TEST COMPLETE.* 

INACTIVE TROUBLE

CODES. 

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