Terminals Of Ecu
- CHECK INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU)
- Disconnect the B4 and B6 ECU connectors.
- Disconnect the 1D, 1F and 1M J/B connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
Standard resistance
TERMINAL DESCRIPTION SPECIFIED CONDITION CHARTSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition BECU (1D-10) - Body ground W - Body ground +B (BECU) power supply Constant 10 to 14 V GND1 (1F-10) - Body ground W-B - Body ground Ground Constant Below 1 Ω GND2 (1M-9) - Body ground W-B - Body ground Ground Constant Below 1 Ω DCTY (B6-14) - Body ground L - Body ground Driver door courtesy switch input Driver door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω KSW (B4-21) - Body ground B - Body ground Key unlock warning switch input No key in ignition key cylinder → Key inserted 10 kΩ or higher → Below 1 Ω HINT:
If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the 1D, 1F, 1M, B4 and B6 connectors.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
TERMINAL DESCRIPTION SPECIFIED CONDITION CHARTSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition DCTY (B6-14) - Body ground L - Body ground Driver door courtesy switch input Driver door CLOSED → OPEN 10 to 14 → 0 V