COMPONENTS
ILLUSTRATION
On-vehicle InspectionDiagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Lighting system data and the Diagnostic Trouble Codes (DTCs) can be read
from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be
malfunctioning, use the Techstream to check for malfunctions an ...
ECM / PCM Processor (P0606)
MONITOR DESCRIPTION
The ECM continuously monitors its main and sub CPUs. This self-check ensures
that the ECM is functioning properly. If outputs from the CPUs are different and
deviate from the standard, the ECM illuminates the MIL and stores the DTC imm ...
Speed Signal Circuit
DESCRIPTION
The headlight leveling ECU assembly receives the vehicle speed signal from the
combination meter assembly.
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 p ...