Chrysler New Yorker. Manual - part 584

TEST TC-40A

REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

Perform TEST DTC Before Proceeding

FIG. 1

FIG. 2

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TEST TC-40A

REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

CYCLE THE IGNITION 

START TEST 

OFF, THEN ON.

TC-40A.

ATTEMPT TO START

THE ENGINE...

WITH THE DRB IN 

READ THE CURRENT

DID ONLY THE CMP

YES

CONTINUE TEST 

INPUT/OUTPUT 

CMP AND CKP

STATE CHANGE?

TC-40A ON THE

DISPLAY... STATES.

NEXT 

PAGE.

NO 

DID ONLY THE CKP

YES

PERFORM TEST 

STATE CHANGE?

TC-1A. 

NO 

DOES THE CKP AND

NO 

PERFORM TEST 

THE CMP SENSORS

TC-40D.

STATE CHANGE?

YES

WIGGLE THE WIRING 

DID THE ENGINE 

REPAIR CIRCUIT AS 

IF NOT ALREADY

HARNESS FROM CMP &

MISS OR DIE OUT

YES

NECESSARY WHERE

RUNNING, START THE

CKP SENSORS TO THE

WHEN WIGGLING 

WIGGLING CAUSED 

ENGINE.

POWERTRAIN CONTROL

WIRES? 

THE ENGINE TO MISS 

MODULE.

OR DIE OUT.*

NO 

WITH 

THE DRB IN WHILE THE ENGINE WERE 

THERE ANY

CHECK HARNESS AND

THE LAB SCOPE, 

IS RUNNING, WIGGLE 

IRREGULARITIES IN 

YES

CONNECTORS 

PROBE THE CRANK

THE WIRE HARNESS

THE LAB SCOPE

CAREFULLY, IF OK 

SENSOR SIGNAL WIRE 

AND CONNECTORS.

PATTERN? 

REPLACE THE CRANK

FIG. 1

FIG. 2

SENSOR.* 

NO 

KEY OFF, CONNECT

KEY ON,DO NOT

THE LAB SCOPE TO START THE ENGINE,

DID THE CAM SENSOR 

YES

REPLACE THE CAM

THE CAM SENSOR 

LOOK FOR ANY

GENERATE ANY

SENSOR.* 

PULSES GENERATED

PULSES?

FIG. 1

BY THE CAM SENSOR.

NO 

REFER TO GENERAL

INFO 3.3.2 FOR
INFORMATION ON 

TEST COMPLETE.* 

INACTIVE CODES. 

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TEST TC-40A

CONTINUED - REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

FIG. 1

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174

TEST TC-40A

CONTINUED - REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-40A 

CONTINUED FROM 

THE PREVIOUS 

TURN IGNITION OFF. 

PAGE.

DISCONNECT THE CRANK

POSITION (CKP)

SENSOR CONNECTOR.** 

TURN IGNITION ON.

SEE GENERAL INFO 4.4

USING A VOLTMETER, 

MEASURE THE VOLTAGE

IS THE VOLTAGE

NO 

PERFORM TEST 

FROM THE 8-VOLT 

ABOVE 7.0 VOLTS? 

TC-40B.

SUPPLY CIRCUIT. 

FIG. 1

YES

CONNECT ONE END OF 

A JUMPER WIRE TO 

TURN IGNITION OFF. 

THE CRANK POSITION 

SIGNAL CIRCUIT. 

FIG. 1

TURN IGNITION ON.

THEN TAP THE OTHER

WITH THE DRB, 

END OF THE JUMPER 

DOES THE CKP STATE

NO 

CONTINUE TEST 

MONITOR THE

TO SENSOR GROUND 

CHANGE TO PRESENT? 

TC-40A ON THE

CURRENT CKP

SEVERAL TIMES. NEXT 

PAGE.

STATE... FIG. 

1

YES

PERFORM TEST 

TC-40C.

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