Vehicle Check/Preparation

VEHICLE CHECK/PREPARATION

Before using the scan tool to carry out any test, refer to the Important Safety Notice located in the Introduction and the necessary visual checks listed below.

Visual Checks

WARNING: To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage hybrid system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.

- Inspect the air cleaner and inlet duct.
- Check all engine vacuum hoses for damage, leaks, cracks, kinks and correct routing.
- Check the powertrain control module (PCM) or transaxle control module (TCM) wiring harness for correct connections, bent or broken pins, corrosion, loose wires and correct routing.
- Examine all high voltage cables and connectors for secure connection, damaged, burned or overheated insulation and loose or broken condition.
- Verify the high voltage traction battery service plug is correctly connected.
- Check the PCM, sensors, and actuators for physical damage.
- Check the engine coolant for correct level and mixture.
- Check the motor electronics coolant for correct level and mixture.
- Check the transaxle fluid level and quality. Refer to the Automatic Transmission/Transaxle &/or Transmission Control Systems, Automatic Transmission/Transaxle.
- Make all necessary repairs before continuing with the quick test. For additional information refer to Quick Test Description. Quick Test Description

Vehicle Preparation
- Carry out all safety steps required to start and run vehicle tests. Apply the parking brake, place the gear selector firmly into the PARK position and block the drive wheels.
- Verify the high voltage traction battery state of charge is equal to or greater than 45% by monitoring the battery energy control module (BECM) state of charge parameter identification (PID). If the monitored PID displays the state of charge below 45%, start and idle the engine. For additional information refer to Diagnostic Modes. Diagnostic Modes
- Turn off all electrical loads, such as radios, lamps, A/C, blower, and fans.
- Start the engine and bring it up to the normal operating temperature before running the quick test.