Pinpoint Test N: The Accessory Power Gauge Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Test N: The Accessory Power Gauge Is Inoperative (Hybrid)
Normal Operation
The accessory power gauge indicates the amount of non-propulsion electrical demands that the vehicle accessories are placing on the electrical system. Examples of non-propulsion accessories are air conditioning, lighting, audio and the rear window defroster. The accessory power gauge is only displayed in the empower display mode. When in use, these accessories use up electrical power that reduces the overall stored energy that could be used to drive the electric motor. The accessory power gauge indicates the amount of power the accessories are using up. Thus a rising gauge indicates that there is an increasing demand on the available power and a falling gauge indication indicates that the demand from the accessories is reduced.
The Instrument Panel Cluster (IPC) receives the accessory power data from the air conditioning control module and the DC to DC Converter Control Module (DC/DC) over the High Speed Controller Area Network (HS-CAN) communication bus.
The IPC requires multiple operational messages to control the accessory power gauge. The following table provides a summary of the messages and the originating module.
If the actual power consumption data is missing or invalid for less than 5 seconds, the IPC defaults the accessory power gauge to the last state, based upon the last known good actual power consumption data received. If the actual power consumption data is invalid for 5 seconds or more, the IPC sets DTC U040A:68 and defaults the accessory power gauge to the full low position. If the actual power consumption data is missing for 5 seconds or more, the IPC sets DTC U010F:00 and defaults the accessory power gauge to the full low position.
If the DC to DC current/voltage data is missing or invalid for less than 5 seconds, the IPC defaults the accessory power gauge to the last state, based upon the last known good DC to DC current/voltage data received. If the DC to DC current/voltage data is invalid for 5 seconds or more, the IPC sets DTC U0599:68 and defaults the accessory power gauge to the full low position. If the DC to DC current/voltage data is missing for 5 seconds or more, the IPC sets DTC U0298:00 and defaults the accessory power gauge to the full low position.
This pinpoint test is intended to diagnose the following:
- Air conditioning control module
- DC/DC
- IPC
PINPOINT TEST N: THE ACCESSORY POWER GAUGE IS INOPERATIVE (HYBRID)
-------------------------------------------------
N1 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 N2.
No
SET the display setting to empower mode.
-------------------------------------------------
N2 RETRIEVE THE RECORDED DTCs FROM THE AIR CONDITIONING CONTROL MODULE SELF-TEST
- Check for recorded air conditioning control module DTCs from the self-test.
- Are any DTCs recorded?
Yes
DIAGNOSE all air conditioning control module DTCs first. REFER to Automatic Transaxle/Transmission - Electronically Controlled Continuously Variable Transmission (eCVT) Testing and Inspection.
No
GO to N3.
-------------------------------------------------
N3 RETRIEVE THE RECORDED DTCs FROM THE DC/DC SELF-TEST
- Check for recorded DC/DC DTCs from the self-test.
- Are any DTCs recorded?
Yes
DIAGNOSE all DC/DC DTCs first. REFER to High Voltage Converter/Inverter Testing and Inspection.
No
GO to N4.
-------------------------------------------------
N4 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.
-------------------------------------------------