Chrysler New Yorker. Manual - part 380

TEST 2A

REPAIRING AUTOMATIC TEMPERATURE CONTROL HEAD SWITCHES

Perform TEST 1B Before Proceeding

FIG. 1

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TEST 2A

REPAIRING AUTOMATIC TEMPERATURE CONTROL HEAD SWITCHES

Perform TEST 1B Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

NOTE: THIS TEST 

WITH THE DRB, 

WILL APPLY TO ALL

START TEST 2A.

ERASE THE TROUBLE

12 ATC SWITCHES.

CODE.

FIG. 1

WITH THE DRB, SELECT 

REPLACE THE

"BODY COMPUTER", 

WITH THE DRB, READ 

DOES THE DRB

NO 

AUTOMATIC

"AUTOMATIC TEMP 

THE INOPERATIVE

DISPLAY SWITCH 

TEMPERATURE

CONTROL" THEN 

ATC SWITCH.

OPEN?

CONTROL HEAD.* 

"INPUT/OUTPUTS". 

YES

REPLACE THE

PUSH AND HOLD THE

WITH THE DRB, READ 

DOES THE DRB

YES

AUTOMATIC

INOPERATIVE SWITCH THE INOPERATIVE

DISPLAY SWITCH 

TEMPERATURE

ON THE ATC HEAD.

ATC SWITCH.

OPEN?

CONTROL HEAD.* 

NO 

THE SWITCH IS 

OPERATING PROPERLY 

AT THIS TIME.* 

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TEST 3A

REPAIRING

(

BLEND DOOR FEEDBACK/STALL TEST FAILURE

(

TROUBLE CODE

Perform TEST 1B Before Proceeding

FIG. 1

FIG. 2

FIG. 3

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120

TEST 3A

REPAIRING

(

BLEND DOOR FEEDBACK/STALL TEST FAILURE

(

TROUBLE CODE

Perform TEST 1B Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

NOTE: FOR LOCATION KEY OFF. USING A VOLTMETER, 
OF ALL COMPONENTS.

DISCONNECT THE

BACKPROBE THE

START TEST 3A.

BODY CONTROL

5-VOLT SUPPLY (CAV 

MODULE C2 HARNESS

15) AND... 

SEE GENERAL INFO 4.0

CONNECTOR. FIG. 1

REPAIR THE 5-VOLT 

RECONNECT THE

TURN THE IGNITION 

IS THE VOLTAGE

YES

SUPPLY CIRCUIT FOR

HARNESS CONNECTOR. ON.

ABOVE 5.3 VOLTS? 

A SHORT TO 

VOLTAGE. IF OK,

REPLACE THE BCM.*

NO 

IS THE VOLTAGE

YES

CONTINUE TEST 

ABOVE 4.0 VOLTS? 

3A ON THE NEXT 

PAGE.

NO 

KEY OFF. 

USING AN OHMMETER,

REPAIR THE 5-VOLT 

DISCONNECT THE BODY 

MEASURE BETWEEN

IS THE RESISTANCE 

YES

SUPPLY CIRCUIT FOR

CONTROL MODULE C1 &

GROUND AND THE

BELOW 5.0 OHMS?

A SHORT TO 

C2 HARNESS

5-VOLT SUPPLY CKT. 

GROUND.* 

CONNECTORS.** FIG. 1

FIG. 2

NO 

MEASURE THE

USE AN OHMMETER IN 

RESISTANCE BETWEEN

IS THE RESISTANCE 

NO 

REPLACE THE BODY 

THE FOLLOWING

THE 5-VOLT SUPPLY 

BELOW 2000.0 OHMS?

CONTROL MODULE.* 

STEPS. CKT AND THE SENSOR 

GROUND CKT. FIG. 3

YES

DISCONNECT THE

MEASURE THE

BLEND DOOR 

RESISTANCE BETWEEN

IS THE RESISTANCE 

NO 

REPLACE THE BLEND

ACTUATOR HARNESS

THE 5-VOLT SUPPLY 

BELOW 2000.0 OHMS?

DOOR ACTUATOR.* 

CONNECTOR.** CKT AND THE SENSOR 

GROUND CKT. FIG. 3

YES

DISCONNECT THE

MEASURE THE

MODE DOOR ACTUATOR 

RESISTANCE BETWEEN

IS THE RESISTANCE 

NO 

REPLACE THE MODE 

HARNESS

THE 5-VOLT SUPPLY 

BELOW 2000.0 OHMS?

DOOR ACTUATOR.* 

CONNECTOR.** CKT AND THE SENSOR 

GROUND CKT. FIG. 3

YES

REPAIR THE 5-VOLT 
SUPPLY CIRCUIT FOR

A SHORT TO THE
SENSOR GROUND 

CIRCUIT.*

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