Terminals Of Ecu
- CHECK ABSORBER CONTROL ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage and resistance of the connectors.
Connector U2:
VOLTAGE AND RESISTANCE SPECIFICATION (CONNECTOR U2)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition RAR+ (2) - Body ground W - Body ground Rear right actuator output Power switch OFF 12.0 to 12.8 Ω RAR- (3) - Body ground V - Body ground Rear right actuator output Power switch OFF 12.0 to 12.8 Ω RBR+ (4) - Body ground GR - Body ground Rear right actuator output Power switch OFF 12.0 to 12.8 Ω RBR- (5) - Body ground Y - Body ground Rear right actuator output Power switch OFF 12.0 to 12.8 Ω RAL+ (6) - Body ground B - Body ground Rear left actuator output Power switch OFF 12.0 to 12.8 Ω RAL- (7) - Body ground G - Body ground Rear left actuator output Power switch OFF 12.0 to 12.8 Ω RBL+ (8) - Body ground R - Body ground Rear left actuator output Power switch OFF 12.0 to 12.8 Ω RBL- (9) - Body ground W - Body ground Rear left actuator output Power switch OFF 12.0 to 12.8 Ω SGL3 (11) - Body ground LG - Body ground Front acceleration sensor ground Power switch OFF Below 1 Ω SGR3 (12) - Body ground BR - Body ground Rear acceleration sensor ground Power switch OFF Below 1 Ω SBR3 (15) - SGR3 (12) P - BR Rear acceleration sensor power supply Power switch ON (IG) 4.75 to 5.25 V SBL3 (16) - SGL3 (11) O - LG Front acceleration sensor power supply Power switch ON (IG) 4.75 to 5.25 V SGRR (27) - SGR3 (12) SB - BR Front acceleration sensor signal Power switch ON (IG), vehicle stationary condition Approx. 2.25 V SGFL (29) - SGL3 (11) L - LG Rear acceleration sensor signal Power switch ON (IG), vehicle stationary condition Approx. 2.25 V Connector A37:
RESISTANCE SPECIFICATION (CONNECTOR K37)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition FAR+ (1) - Body ground P-L - Body ground Front right actuator output Power switch OFF 12.0 to 12.8 Ω FAR- (2) - Body ground L-R - Body ground Front right actuator output Power switch OFF 12.0 to 12.8 Ω FBR+ (3) - Body ground B-Y - Body ground Front right actuator output Power switch OFF 12.0 to 12.8 Ω FBR- (4) - Body ground R-L - Body ground Front right actuator output Power switch OFF 12.0 to 12.8 Ω FAL+ (5) - Body ground G-B - Body ground Front left actuator output Power switch OFF 12.0 to 12.8 Ω FBL+ (6) - Body ground G-W - Body ground Front left actuator output Power switch OFF 12.0 to 12.8 Ω FAL- (14) - Body ground G-R - Body ground Front left actuator output Power switch OFF 12.0 to 12.8 Ω FBL- (16) - Body ground G-Y - Body ground Front left actuator output Power switch OFF 12.0 to 12.8 Ω Connector K72:
VOLTAGE AND RESISTANCE SPECIFICATION (CONNECTOR K72)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (1) - GND (4) B - W-B Power supply Power switch ON (IG) 10 to 14 V GND (4) - Body ground W-B - Body ground Absorber control ECU ground Power switch OFF Below 1 Ω CANH (7) - CANL (8) W - B CAN communication system Power switch OFF 54 to 69 Ω SW1 (9) - Body ground V - Body ground Absorber control switch input Power switch ON (IG), absorber control switch ON 10 to 14 V SW1 (9) - Body ground V - Body ground Absorber control switch input Power switch ON (IG), absorber control switch OFF 0 to 1.5 V SIL (13) - Body ground SB - Body ground Diagnostic communication terminal Power switch ON (IG), connect intelligent tester to the DLC3 Pulse generation (see WAVEFORM 1 ) - Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference)
WAVEFORM REFERENCEItem Contents Terminal SIL (K72-13) - Body ground Tool setting 5 V / DIV., 1 msec. / DIV. Vehicle condition Communicating using intelligent tester
- Measure the voltage and resistance of the connectors.