*NO CRANK CONDITION

For a complete wiring diagram Refer to Section 8W.

Possible Causes

MECHANICAL CONDITION

BATTERY CIRCUIT RESISTANCE TOO HIGH

(F26) FUSED IGNITION SWITCH OUTPUT CIRCUIT

(A901) FUSED B+ CIRCUIT OPEN

(T752) STARTER RELAY CONTROL CIRCUIT OPEN

(T750) STARTER RELAY OUTPUT CIRCUIT OPEN

TRANSMISSION RANGE SENSOR

STARTER RELAY

STARTER

Diagnostic Test

1.MECHANICAL CONDITION

NOTE: Verify the battery is fully charged and capable of passing a load test before continuing.

WARNING: Make sure the battery is disconnected, then wait two minutes before proceeding. Failure to do so may result in personal injury or possible death.

Is the engine able to turn over?

Yes

Go To 2

Repair the mechanical condition preventing the starter motor from cranking.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2.TRANSMISSION RANGE SENSOR

NOTE: The circuit is grounded in Park and Neutral and open in the other positions.

Did the resistance change from above 100 kohms (open) to below 10.0 ohms (grounded) ?

Yes

Go To 3

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

3.EXCESSIVE RESISTANCE IN THE BATTERY CIRCUIT

Did either Battery Cable have a voltage drop greater than 0.2 of a volt?

Yes

Repair the excessive resistance in the Battery circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 4

4.STARTER RELAY

CAUTION: The Parking Brake must be on and the Transmission must be in park for a vehicle equipped with an automatic transmission.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Did the Starter Motor crank the engine?

Yes

Go To 5

Go To 7

5.(F26) FUSED IGNITION SWITCH OUTPUT CIRCUIT

Does the test light illuminate brightly?

Yes

Go To 6

Repair the excessive resistance in the (F26) Fused Ignition Switch Output circuit. Inspect related fuses and repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

6.(T752) STARTER RELAY CONTROL CIRCUIT OPEN

Is the resistance below 5.0 ohms?

Yes

Replace the Starter Motor Relay.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Repair the open in the (T752) Starter Relay Control circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

7.(A901) FUSED B+ CIRCUIT

Does the test light illuminate brightly?

Yes

Go To 8

Repair the excessive resistance or short to ground in the (A901) Fused B+ circuit. Inspect related fuses and repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

8.(T750) STARTER RELAY OUTPUT CIRCUIT OPEN

Is the resistance below 5.0 ohms?

Yes

Go To 9

Repair the open in the Starter Relay Output circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

9.STARTER

If there are no other possible causes remaining, review repair.

Repair

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