Circuit/System Testing
WARNING:
Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure includes the following steps:
- Identify how to disable high voltage.
- Identify how to test for the presence of high voltage.
- Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
- Safety glasses with appropriate side shields when within 15 meters (50 feet) of the vehicle, either indoors or outdoors.
- Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves with leather protectors at all times when working with the high voltage battery assembly, whether the system is energized or not.
Failure to follow the procedures may result in serious injury or death.
- The control modules that share the K114B hybrid powertrain control module 2 terminal 69 X2 accessory wake up serial data 2 circuit
- The control module B+, ignition, and accessory wake up serial data 2 circuit terminals
- Vehicle OFF, disconnect the X2 harness connectors at the K114B Hybrid Powertrain Control Module 2.
- Vehicle OFF and all vehicle systems OFF, all keys at least 3 meters away from vehicle, all access doors closed. It may take up to 2 minutes for all vehicle systems to power down. Test for greater than 100 Ω, but less than infinite resistance, between the accessory wake up serial data 2 circuit terminal 69 X2 and ground.
- If less than the specified range, refer to Testing the Accessory Wake Up Serial Data 2 Circuits for a Short to Ground.
- If infinite resistance, test the accessory wake up serial data 2 circuit for an open/high resistance.
- Vehicle in Service Mode, verify that a test lamp illuminates between each B+ circuit terminal and ground.
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, replace the K114B Hybrid Powertrain Control Module 2.
- Vehicle in Service Mode, verify that a test lamp illuminates between each ignition circuit terminal and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the K114B Hybrid Powertrain Control Module 2.
- If the circuits test normal, replace the K114B Hybrid Powertrain Control Module 2.
NOTE:
Use the schematic to identify the following:
Testing the Accessory Wake Up Serial Data 2 Circuits for a Short to Ground
- Perform the High Voltage Disabling procedure before proceeding with this diagnostic. Refer to High Voltage Disabling .
- Reconnect the 12 V battery.
- Vehicle OFF, disconnect the harness connector at an easily accessible control module that shares the K114B Hybrid Powertrain Control Module 2 terminal 69 X2 accessory wake up serial data 2 circuit.
- Test for less than 100 Ω between the K114B Hybrid Powertrain Control Module 2 accessory wake up serial data 2 circuit terminal 69 X2 and ground.
- If greater than the specified range, replace the control module that was just disconnected.
- Repeat step 3 until all control modules on the K114B Hybrid Powertrain Control Module 2 accessory wake up serial data 2 circuit terminal 69 X2 have been disconnected.
- Repair the short to ground on the accessory wake up serial data 2 circuit.