Chrysler New Yorker. Manual - part 571

TEST TC-25A

CONTINUED - REPAIRING - IDLE AIR CONTROL MOTOR CIRCUITS

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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.

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TEST TC-25A

CONTINUED - REPAIRING - IDLE AIR CONTROL MOTOR CIRCUITS

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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.*

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