Terminals Of Ecu
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BODY ECU)
- Disconnect the B5 J/B connector.
- Disconnect the IC, IB, ID, IE and IH J/B connectors.
- Check the voltage or continuity of each terminal of the wire harness side connectors.TERMINAL SPECIFIED CONDITION
Symbols (Terminal No.) Wiring Condition Specified Condition KSW (B5-14) - Body ground G-Y - Body ground No key in ignition key cylinder → Key inserted 10 kΩ or higher → Below 1 Ω BDR1 (IE-9) - Body ground G-W - Body ground Always 10 to 14 V BECU (IB-4) - Body ground W-R - Body ground Always 10 to 14 V SIG (IC-2) - Body ground L-Y - Body ground Ignition switch ON 10 to 14 V ACC (ID-5) - Body ground W-G - Body ground Ignition switch ON 10 to 14 V GND1 (IH-2) - Body ground W-B - Body ground Always Below 1 Ω GND2 (IH-2) - Body ground W-B - Body ground Always Below 1 Ω If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the B5 J/B connector.
- Reconnect the IC, IB, ID, IE and IH J/B connectors.
- Check the voltage of each terminal of the connectors.
TERMINAL SPECIFIED CONDITIONSymbols (Terminal No.) Wiring Condition Specified Condition RDA (B4-4) - Body ground L-R - Body ground Ignition switch OFF, no key in ignition key cylinder, all doors closed and transmitter switch OFF → ON Below 1 V → 6 V → Below 1 V DCTY (B4-23) - Body ground R-Y - Body ground Driver's door CLOSED → OPEN 10 to 14 V → Below 1 V PCTY (B4-24) - Body ground R-Y - Body ground Passenger's door CLOSED → OPEN 10 to 14 V → Below 1 V RLCY (B4-11) - Body ground P-B - Body ground Rear door LH CLOSED → OPEN 10 to 14 V → Below 1 V RRCY (B4-12) - Body ground P-L - Body ground Rear door RH CLOSED → OPEN 10 to 14 V → Below 1 V HAZ (IJ-14) - Body ground W - Body ground Answer-back OFF → Answer-back ON Pulse generation BZR (IB-10) - BZR2 (IB-6) L - W Wireless buzzer OFF → ON Pulse generation If the result is not as specified, the J/B assembly (body ECU) may have a malfunction.