Schematic Reference
Starting and Charging Schematics (Gas and Diesel) or Starting and Charging Schematics (HP2)
Connector End View Reference
Engine Electrical Connector End Views
Electrical Information Reference
- «Circuit Testing»(ref-238178-S39570233092006072400000)
- «Connector Repairs»(ref-238178-S40461273312006072400000)
- «Testing for Intermittent Conditions and Poor Connections»(ref-238178-S33329058682006072400000)
- «Wiring Repairs»(ref-238178-S26381606952006072400000)
| IMPORTANT | Ensure the Energy Storage Battery Pack is fully charged. Ensure the 175A Hybrid fuse in the under hood fuse block is functional. Always perform the Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2) before diagnosing or servicing any PHT systems. It is imperative that the 3-phase cable connections are clean and the fasteners are torqued to specifications. Torque specifications are 14 N*m +/- 2 N*m at the starter generator, and 15 N*m +/-2 N*m at the SGCM. |
- Turn the ignition OFF.
- Disconnect the 3-phase cable from the Stator (Electric Machine). Refer to «Starter/Generator Control Module (SGCM) (3-Phase) Cable Replacement (5.3L Engine w/RPO HP2)»(ref-238198-S01563784322006072400000) . Test for shorts between the stator connections, and to chassis ground. If a short is confirmed, replace the Starter Generator Stator.
- Disconnect the 3-phase cables from the SGCM. Refer to «Starter/Generator Control Module (SGCM) (3-Phase) Cable Replacement (5.3L Engine w/RPO HP2)»(ref-238198-S01563784322006072400000) . Test the 3-phase cables circuits for shorts between cables, and short to chassis ground. If a short is confirmed, replace the 3-phase cables.
- If no trouble found, replace the SGCM.