*NO RESPONSE WITH A NO START CONDITION

For a complete wiring diagram Refer to Section 8W.

Possible Causes

(A209) PCM FUSED B+ CIRCUIT

PCM NO RESPONSE

(F1) (F942) (F26) PCM FUSED IGNITION SWITCH OUTPUT CIRCUITS

(Z816) (Z130) PCM GROUND CIRCUITS

CRANKSHAFT POSITION SENSOR

(F855) 5-VOLT SENSOR OPEN/SHORTED

(F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND

(F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND

PCM

Diagnostic Test

1.(A209) PCM FUSED B+ CIRCUIT

NOTE: The scan tool and cable must be operating properly for the results of this test to be valid.

NOTE: Make sure the ignition switch was on while trying to communicate with the PCM.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Does the test light illuminate brightly?

Yes

Go To 2

Repair the open or short to ground in the (A209) Fused B+ circuit. Inspect and replace fuses as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2.(F942), (F1), (F26) PCM FUSED IGNITION SWITCH CIRCUITS

Does the test light illuminate brightly?

Yes

Go To 3

Repair the (F942), (F1), (F26) Ignition Switch Output circuit. Inspect and replace fuses as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

3.(Z130), (Z816) PCM GROUND CIRCUITS

Does the test light illuminate brightly?

Yes

Go To 4

Repair the (Z130), (Z816) PCM ground circuits.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

4.(F855) 5-VOLT SUPPLY CIRCUIT

Is the voltage between 4.5 and 5.2 volts?

Yes

Go To 5

Go To 6

5.CKP SENSOR

Is the voltage between 4.5 and 5.2 volts?

Yes

If communication is available with a PCM on a like vehicle, replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Replace the Crankshaft Position Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

6.(F855) 5-VOLT SENSOR OPEN/SHORTED

Did the voltage return to 4.5 to 5.2 volts when disconnecting any of the sensors.

Yes

Replace the sensor that is pulling down the (F855) 5-volt supply.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 7

7.(F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND

Is the resistance below 100 ohms?

Yes

Repair the short to ground in the (F855) 5-volt Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 8

8.(F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND

Is the resistance below 100 ohms?

Yes

Repair the short to ground in the (F856) 5-volt Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 9

9.PCM

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Were there any problems found?

Yes

Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)