HINT
* A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse
signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
* If a short occurs in an ECU, all systems in the diagram above will not operate normally.
INSPECTION PROCEDURE
NOTICE:
* When the power management control ECU is replaced with a new one and the cable from the negative (-) battery terminal is
connected, the power source mode becomes the on (IG) mode. When the battery is removed and reinstalled, the power source
mode that was selected when the battery was removed is restored.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK CAN COMMUNICATION SYSTEM
(a) Check if CAN communication DTCs are output.
HINT
If any DTCs for CAN communication system malfunction are output, inspect those DTCs first.
OK:
CAN communication DTC is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) See: Diagnostic Trouble
Code Descriptions/CAN Communication System
OK -- Continue to next step.
2. CHECK SPEEDOMETER OPERATION
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Data List.
(e) Check the Data List for proper functioning of the vehicle speed signal.
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