Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF, measure and record the battery voltage at the C1 Battery terminals.
Verify the measured voltage is between 12.0 - 15.0 V.
- If voltage is less than 12.0 V or greater than 15.0 V
  Refer to Battery Inspection/Test .
- Go to next step: If voltage is between 12.0 - 15.0 V
Verify that a test lamp illuminates between the M64 Starter Motor B+ terminal A X2 or 1 X2 and ground.
- If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
2. Test for less than 2 Ω in the B+ circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF.
2. Test for greater than 100 Ω between the B+ circuit and ground.
  - If 100 Ω or less, repair the short to ground on the circuit.
  - If greater than 100 Ω, replace the M64 Starter Motor.
- Go to next step: If the test lamp illuminates
Test for less than 0.5 V between the positive battery cable and terminal A X2 or 1 X2 at the M64 Starter Motor with the ignition in the START position.
- If 0.5 V or greater
  Replace the positive battery cable.
- Go to next step: If less than 0.5 V
Test for less than 0.5 V between the negative battery cable and the M64 Starter Motor case with the ignition in the START position.
- If 0.5 V or greater
  Replace the negative battery cable.
- Go to next step: less than 0.5 V
Remove the drive belts. Refer to Drive Belt Tensioner Replacement , for the 1.5 L engine or Drive Belt Replacement , and Drive Belt Tensioner Replacement for the 2.0 L engine.
Verify the crankshaft rotates rotate the crankshaft by hand using the appropriate tools.
- If the crankshaft does not rotate
  Refer to Engine Will Not Crank - Crankshaft Will Not Rotate , for the 1.5 L engine or Engine Will Not Crank - Crankshaft Will Not Rotate for the 2.0 L engine
- Go to next step: If the crankshaft rotates
Verify the engine does not crank when attempting to start the vehicle.
- If the engine cranks
  Inspect the engine and belt drive system for mechanical binding, seized generator etc.
- Go to next step: If the engine does not crank
Replace the M64 Starter Motor.