Hybrid System Indicator Malfunction

METER: METER / GAUGE SYSTEM: Hybrid System Indicator Malfunction

Hybrid System Indicator Malfunction

DESCRIPTION

An ECON indicator light, variable economy zone display and EV drive mode indicator are adopted for this vehicle. In this circuit, the meter CPU receives the EV drive mode switch signal and pattern select switch signal from the hybrid vehicle control ECU via the CAN communication line (CAN No. 1 bus). The meter CPU controls the operation of the ECON indicator light, variable economy zone display and EV drive mode indicator as follows:
1. ECON indicator light and variable economy zone display:
An ECON indicator light and variable economy zone display are adopted to inform the driver of the fuel consumption while driving. Pressing the ECON switch located on the center console will switch between ECON mode and normal mode. When the meter CPU receives a signal from the ECON switch, it will illuminate the ECON indicator light to inform the drive that the vehicle is traveling in a mode that restricts excessive fuel consumption.
2. EV drive mode indicator light
EV drive mode is adopted for this vehicle to reduce noise and emission gas. While in EV drive mode, the EV drive mode indicator light illuminates to inform the drive that the vehicle is in a EV drive mode. While the EV drive mode operation conditions are met, pressing the EV drive mode switch located on the center console will switch between EV drive mode and normal mode. When any of the previously met conditions become unsatisfied or if the EV drive mode operation conditions are not met, the EV drive mode indicator light will flash 3 times, a buzzer in the combination meter assembly will sound, and EV drive mode will be canceled. When the meter CPU receives an EV drive mode cancel signal, it will display an EV drive mode cancel warning on the multi-information display.

WIRING DIAGRAM

1. for ECON Indicator Light:





2. for EV Drive Mode Indicator Light and Variable economy zone display:





INSPECTION PROCEDURE
HINT: If there is an open or short in the EV drive mode switch circuit, or the pattern select switch circuit, the hybrid vehicle control ECU outputs DTCs. Perform troubleshooting with the "P310 Hybrid Control System" for EV drive mode switch circuit, for Pattern select switch circuit).

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM
(a) Check for the DTC. Diagnosis System
Result:






C -- Go to CAN COMMUNICATION SYSTEM
B -- PERFORM ACTIVE TEST USING TECHSTREAM (ECON INDICATOR LIGHT, VARIABLE ECONOMY ZONE DISPLAY)
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (EV DRIVE MODE INDICATOR LIGHT)
(a) Connect Techstream to the DLC3.
(b) Power switch on (IG).
(c) Turn the tester ON.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Check the indicator light operation according to the values in the table below.






OK:
Indicator light operation is normal.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Go to HYBRID CONTROL SYSTEM
3. PERFORM ACTIVE TEST USING TECHSTREAM (ECON INDICATOR LIGHT, VARIABLE ECONOMY ZONE DISPLAY)
(a) Connect Techstream to the DLC3.
(b) Power switch on (IG).
(c) Turn the tester ON.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Check the indicator light operation according to the values in the table below.






OK:
Indicator light operation is normal.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Go to HYBRID CONTROL SYSTEM