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

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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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