Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

The ratio between the crankshaft and the drive motor speeds is 2.3 to 1. When using a scan tool to determine belt slip the engine (crankshaft) RPM value must be multiplied by 2.3 to approximate the starter generator speed.
Inspect the drive belt for cracks and oil contamination.
Test drive the vehicle through the different modes of operation, performing Autostop and Autostart cycles. Accelerate up to 50 mph and brake moderately, and listen for any audible belt squeal. If drive belt noise is noticed check the drive belt tensioner assembly for proper operation and installation.