Circuit/System Verification
- Ignition ON
- Using the Graphical Data Display in the scan tool, verify the ECM Ignition 1 Signal is 8.9 V or greater during ignition CRANK
- If Ignition 1 Signal is below 8.9 V
- Verify that there is no excessive parasitic current drain, refer to Battery Electrical Drain/Parasitic Load Test .
- If there is excessive parasitic current drain, determine cause of the excessive parasitic current drain.
- If there is no excessive parasitic current drain, refer to Circuit/System Testing.
- If Ignition 1 Signal is 8.9 V or greater
- All OK.