Chrysler New Yorker. Manual — part 453

TEST 7A

REPAIRING

(

A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND

(

TROUBLE

CODE

Perform TEST 1B Before Proceeding

FIG. 1

M

A
N
U
A

L

T

E

M

P
E

R
A

T

U
R

E

C

O

N

T

R

O

L

S
Y
S

T

E

M

410

TEST 7A

REPAIRING

(

A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND

(

TROUBLE

CODE

Perform TEST 1B Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

ERASE THE TROUBLE

START TEST 7A.

CODE.

KEY OFF. DISCONNECT

WITH AN OHMMETER,

REPAIR THE MODE

THE A/C-HEATER

MEASURE BETWEEN THE

IS THE RESISTANCE

YES

SWITCH MUX CKT FOR A

CONTROL "C1" HARNESS

SENSOR GROUND CKT

BELOW 5.0 OHMS?

SHORT TO THE SENSOR

CONNECTOR.**

AND THE MODE SWITCH

GROUND CKT. IF OK,

FIG. 1

MUX CKT. FIG. 1

REPLACE THE BCM.*

NO

USING AN OHMMETER,

MEASURE BETWEEN

IS THE RESISTANCE

NO

REPLACE THE

GROUND AND THE MODE

BELOW 100.0 OHMS?

A/C-HEATER CONTROL

SWITCH MUX CIRCUIT.

HEAD.*

FIG. 1

YES

DISCONNECT THE BODY

USING AN OHMMETER,

REPAIR THE MODE

CONTROL MODULE C2

MEASURE BETWEEN

IS THE RESISTANCE

YES

SWITCH MUX CIRCUIT

HARNESS CONNECTOR.** GROUND

AND THE MODE

BELOW 5.0 OHMS?

FOR A SHORT TO

SWITCH MUX CIRCUIT.

GROUND.*

SEE GENERAL INFO 4.0

FIG. 1

NO

REPLACE THE BODY
CONTROL MODULE.*

M

A
N
U
A

L

T

E

M

P
E

R
A

T

U
R

E

C

O

N

T

R

O

L

S
Y
S

T

E

M

411

TEST 8A

REPAIRING INOPERATIVE BLOWER MOTOR

Perform TEST 1A Before Proceeding

FIG. 1

FIG. 2

FIG. 3

M

A
N
U
A

L

T

E

M

P
E

R
A

T

U
R

E

C

O

N

T

R

O

L

S
Y
S

T

E

M

412

TEST 8A

REPAIRING INOPERATIVE BLOWER MOTOR

Perform TEST 1A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

REMOVE AND INSPECT

FUSE #2

YES

PERFORM TEST

START TEST 8A.

.

IS THE FUSE OPEN?

8B.

NO

KEY ON. USING A

REPAIR THE OPEN

VOLTMETER, MEASURE

IS THE VOLTAGE

NO

IGNITION SWITCH

THE IGNITION SWITCH

ABOVE 10.0 VOLTS?

OUTPUT CIRCUIT TO

OUTPUT CKT FOR FUSE

FUSE #23. IF OK,

#23. FIG. 1

REPLACE THE J/B.*

YES

REINSTALL THE

DISCONNECT AND

FUSE.

INSPECT THE BLOWER

MOTOR RESISTOR

TURN THE BLOWER

HARNESS CONNECTOR.**

SWITCH OFF.

SEE GENERAL INFO 4.0

USING A VOLTMETER,

REPAIR THE OPEN

MEASURE THE FUSED

IS THE VOLTAGE

NO

FUSED IGNITION

IGNITION SWITCH

ABOVE 10.0 VOLTS?

SWITCH OUTPUT

OUTPUT CIRCUIT.

CIRCUIT.*

FIG. 2

YES

RECONNECT THE

USING A VOLTMETER,

BLOWER MOTOR

BACKPROBE AND

IS THE VOLTAGE

NO

REPLACE THE BLOWER

RESISTOR HARNESS

MEASURE THE FUSED

ABOVE 10.0 VOLTS?

MOTOR RESISTOR.*

CONNECTOR. IGNITION

SWITCH

OUTPUT CKT. FIG. 3

YES

USING A VOLTMETER,

BACKPROBE AND

IS THE VOLTAGE

NO

REPLACE THE BLOWER

MEASURE THE BLOWER ABOVE 10.0

VOLTS?

MOTOR.*

MOTOR DRIVER

CIRCUIT. FIG. 3

YES

CONTINUE TEST
8A ON THE NEXT

PAGE.

3 IN THE

JUNCTION BLOCK

FIG. 1

M

A
N
U
A

L

T

E

M

P
E

R
A

T

U
R

E

C

O

N

T

R

O

L

S
Y
S

T

E

M

413