Pinpoint Test K: The EV Gauge Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Test K: The EV Gauge Is Inoperative (Hybrid)
Normal Operation
The EV gauge is an extension of the tachometer display. When the vehicle shifts into electric vehicle mode or the ignition is in the RUN position with the engine off, the EV gauge replaces the tachometer display in the Instrument Panel Cluster (IPC). The IPC receives the EV gauge data from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus, and engages and commands the EV gauge according to the data received. The EV gauge is only available in the enlighten display mode.
For the IPC to switch to the EV gauge, the PCM first stops providing the message indicating that the vehicle is in engine active mode and begins sending electric power flow data to the IPC.
If the electric motor data is invalid for 5 seconds or less or if the IPC does not receive the electric motor data for 5 seconds or less, the IPC defaults the EV gauge to the last setting, based upon the last known good electric motor message. If the IPC does not receive the electric motor data from the PCM for more than 5 seconds, the IPC sets DTC U0100:00 in continuous memory and defaults the EV gauge to 0 rpm. If the electric motor data is deemed invalid by the IPC for 5 seconds or more, the IPC sets DTC U0401:68 and defaults the EV gauge to 0.
NOTE: If DTC U0100:00 is set in the IPC, other observable symptoms may be an inoperative speedometer, temperature gauge or odometer.
This pinpoint test is intended to diagnose the following:
- PCM concern
- IPC
PINPOINT TEST K: THE EV GAUGE IS INOPERATIVE (HYBRID)
NOTE: The gas engine must be off with the vehicle operating in electric vehicle mode for the EV gauge to operate.
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K1 VERIFY THAT THE IPC IS IN THE CORRECT DISPLAY SETTING
- Ignition ON.
- Using the setup menu, verify that the IPC is in the enlighten display mode.
- Is the IPC in the enlighten display mode?
Yes
GO to K2.
No
SET the display setting to enlighten mode.
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K2 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 K3.
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K3 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Check for recorded DTCs from the IPC self-test.
- Are any DTCs recorded?
Yes
For DTC U0100:00, GO to Pinpoint Test BF. Pinpoint Tests BF: DTC U0100:00
For DTC U0401:68, RETRIEVE and REPAIR all non-network DTCs in the PCM and other modules on the network. REFER to Computers and Control Systems Information and Multifunction Electronic Modules Testing and Inspection for a list of all DTCs.
For all other DTCs, 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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