Pinpoint Test O: The Vehicle Power Gauge Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Test O: The Vehicle Power Gauge Is Inoperative (Hybrid)
Normal Operation
The vehicle power gauge indicates the power demand when the transaxle is in DRIVE (D) range. The vehicle power gauge is only displayed in the empower display mode. The vehicle power gauge display provides the gasoline engine on/off threshold using a green box on the lower end of the gauge and a gauge display indicating the amount of acceleration demand through the accelerator pedal. As the accelerator is pressed during normal driving, the gauge display increases until the acceleration or power demand is great enough to require the assistance of the gasoline engine.
When the power demand is low and the vehicle is in the electric vehicle mode, the EV display at the bottom of the gauge illuminates. Under certain circumstances such as system warm up or battery charging, the gasoline engine runs regardless of how low the power demand is from the driver. In this case, the green box on the lower portion of the gauge indicating the gasoline engine on/off threshold is not displayed.
The Instrument Panel Cluster (IPC) receives the vehicle power data from the PCM and Battery Pack Sensor Module (BPSM) over the High Speed Controller Area Network (HS-CAN) communication bus.
If the PCM data is missing or invalid for less than 5 seconds, the IPC defaults the vehicle power gauge to the last state, based upon the last known good actual power consumption data received. If the PCM data is invalid for 5 seconds or more, the IPC sets DTC U0401:68 and defaults the vehicle power gauge to the full low position. If the PCM data is missing for 5 seconds or more, the IPC sets DTC U0100:00 and defaults the vehicle power gauge to the full low position.
If the current/voltage data is missing or invalid for less than 5 seconds, the IPC defaults the vehicle power gauge to the last state, based upon the last known good current/voltage data received. If the current/voltage data is invalid for 5 seconds or more, the IPC sets DTC U0412:68 and defaults the vehicle power gauge to the full low position. If the current/voltage data is missing for 5 seconds or more, the IPC sets DTC U0111:00 and defaults the vehicle power gauge to the full low position.
This pinpoint test is intended to diagnose the following:
- PCM
- BPSM
- IPC
PINPOINT TEST O: THE VEHICLE POWER GAUGE IS INOPERATIVE (HYBRID)
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O1 VERIFY THAT THE IPC IS IN THE CORRECT DISPLAY SETTING
- Ignition ON.
- Using the setup menu, verify that the IPC is in the empower display mode.
- Is the IPC in the empower display mode?
Yes
GO to O2.
No
SET the display setting to empower mode.
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O2 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO SELF-TEST
- Check for recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.
- Are any DTCs recorded?
Yes
DIAGNOSE all PCM DTCs first. REFER to Computers and Control Systems Information.
No
GO to O3.
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O3 RETRIEVE THE RECORDED DTCs FROM THE BPSM SELF-TEST
- Check for recorded BPSM DTCs from the self-test.
- Are any DTCs recorded?
Yes
DIAGNOSE all BPSM DTCs first. REFER to High Voltage Traction Battery Testing and Inspection.
No
GO to O4.
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O4 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Check for recorded DTCs from the IPC self-test.
- Are any DTCs recorded?
Yes
REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes
No
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Instrument Panel Cluster (IPC). TEST the system for normal operation.
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