Chrysler New Yorker. Manual — part 571

TEST TC-25A

CONTINUED - REPAIRING - IDLE AIR CONTROL MOTOR CIRCUITS

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

120

TEST TC-25A

CONTINUED - REPAIRING - IDLE AIR CONTROL MOTOR CIRCUITS

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-25A

CONTINUED FROM START ENGINE

AND

THE PREVIOUS LET IDLE.

PAGE.

USING A VOLTMETER, WAS THE VOLTAGE

NO

PERFORM TEST

MEASURE THE IAC

OVER 5.0 VOLTS AT

TC-25B

DRIVER #1 CIRCUIT.

ANY TIME?

YES

USING A VOLTMETER, WAS THE VOLTAGE

NO

PERFORM TEST

MEASURE THE IAC

OVER 5.0 VOLTS AT

TC-25C

DRIVER #2 CIRCUIT.

ANY TIME?

YES

USING A VOLTMETER, WAS THE VOLTAGE

NO

PERFORM TEST

MEASURE THE IAC

OVER 5.0 VOLTS AT

TC-25D

DRIVER #3 CIRCUIT.

ANY TIME?

YES

USING A VOLTMETER, WAS THE VOLTAGE

NO

PERFORM TEST

MEASURE THE IAC

OVER 5.0 VOLTS AT

TC-25E

DRIVER #4 CIRCUIT.

ANY TIME?

YES

CONTINUE TEST

TC-25A ON THE

NEXT PAGE.

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

121

TEST TC-25A

CONTINUED - REPAIRING - IDLE AIR CONTROL MOTOR CIRCUITS

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

122

TEST TC-25A

CONTINUED - REPAIRING - IDLE AIR CONTROL MOTOR CIRCUITS

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-25A

KEY OFF, DISCONNECT

CONTINUED FROM

THE POWERTRAIN

IS ANY TERMINAL

YES

REPAIR AS

THE PREVIOUS CONTROL MODULE

DAMAGED,

PUSHED NECESSARY.*

PAGE.

HARNESS CONNECTOR.** OUT OR

MISWIRED?

SEE GENERAL INFO 4.1

NO

THE FOLLOWING

...USING AN

STEPS ARE CHECKING OHMMETER, MEASURE

FOR A SHORT

THE RESISTANCE

BETWEEN THE DRIVER BETWEEN THE ...

CIRCUITS...

IS THE RESISTANCE

...IAC #1 DRIVER

BELOW 5.0 OHMS ON

YES

REPAIR THE IAC

AND #2,#3,#4

ANY OF THE

DRIVER CIRCUITS,

DRIVERS. DRIVERS?

SHORTED TOGETHER.*

NO

USING AN OHMMETER,

IS THE RESISTANCE

MEASURE THE

...IAC #2 DRIVER

BELOW 5.0 OHMS ON

YES

REPAIR THE IAC

RESISTANCE BETWEEN

AND #3,#4 DRIVERS.

ANY OF THE

DRIVER CIRCUITS,

THE ...

DRIVERS? SHORTED TOGETHER.*

NO

USING AN OHMMETER,

MEASURE THE

...IAC #3 DRIVER

IS THE RESISTANCE

YES

REPAIR THE IAC

RESISTANCE BETWEEN

AND #4 DRIVER.

BELOW 5.0 OHMS?

DRIVER CIRCUITS,

THE ...

SHORTED TOGETHER.*

NO

REPLACE THE IDLE

AIR CONTROL

MOTOR.*

T

R

O

U
B

L

E

C

O

D

E

T

E
S

T

S

123