Terminals Of Ecu
WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (BODY ECU) (LEFT SIDE)
- Disconnect the B6 body ECU connector, and check the continuity of each terminal of the wire harness side connector.
Standard:
CONTINUITY CONDITION BETWEEN TERMINALSSymbols (Terminal No.) Wiring color Condition Specified condition KSW (B6-19) <--> Body Ground L <--> - No key not inserted in the ignition key cylinder --> With key inserted No continuity --> Continuity UL2 (B6-21) <--> Body Ground L-W <--> - Driver's door key cylinder OFF --> UNLOCK No continuity --> Continuity If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the B6 body ECU connector, and check the voltage of each terminal of the connectors.
Standard:
VOLTAGE TERMINAL CONDITIONSymbols (Terminal No.) Wiring color Condition Specified condition ACTD (B8-11) <--> Body Ground L-B <--> - Master switch and driver's door key cylinder OFF --> LOCK 0 V --> 10 - 14 V --> 0 V DCTY (B8-1) <--> Body Ground R-G <--> - Driver's door CLOSED --> OPEN 10 - 14 V --> Below 0 V PCTY (B6-11) <--> Body Ground R-G <--> - Passenger's door CLOSED --> OPEN 10 - 14 V --> Below 0 V If the result is not as specified, the body ECU may be defective.
- Disconnect the B6 body ECU connector, and check the continuity of each terminal of the wire harness side connector.
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (BODY ECU) (REAR SIDE)
- Disconnect the 2B, 2F, 2G and 2K instrument panel J/B connectors, and check the continuity and voltage of each terminal of the disconnected connectors.
Standard:
TERMINAL VOLTAGE CONDITIONSymbols (Terminal No.) Wiring color Condition Specified condition B (2F-7) <--> Body Ground R <--> - Constant 10 - 14 V BDR1 (2G-14) <--> Body Ground L-W <--> - Constant 10 - 14 V L2 (2K-4) <--> Body Ground L-Y <--> - Driver's door key cylinder OFF --> LOCK No continuity --> Continuity L1 (2K-10) <--> Body Ground LG <--> - Master switch (Door control switch) OFF --> LOCK No continuity --> Continuity UL1 (2K-1) <--> Body Ground G-R <--> - Master switch (Door control switch) OFF --> UNLOCK No continuity --> Continuity SGND (2B-11) <--> Body Ground BR <--> - Constant Continuity GND (2R-8(1), 2D-3(2)) <--> Body ground W-B <--> - Constant Continuity (1) : The check should be performed by using the 2D connector*2 , because the 2R connector*1 is unavailable for this check. (2) : The check should be performed by using the 2D connector*2 , because the 2R connector*1 is unavailable for this check. If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the 2B, 2F, 2G and 2K instrument panel J/B connectors, and check the voltage of each terminal of the connectors.
Standard:
TERMINAL VOLTAGE CONDITIONSymbols (Terminal No.) Wiring color Condition Specified condition ACT+ (2C-5) <--> Body Ground L-R <--> - Master switch and driver's door key cylinder OFF --> LOCK 0 V --> 10 - 14 V --> 0 V ACT- (2C-6) <--> Body Ground L-B <--> - Master switch and driver's door key cylinderOFF --> UNLOCK V --> 10 - 14 V --> 0 V RCTY (2K-7) <--> Body Ground R-W <--> - Driver's door CLOSED --> OPEN 10 - 14 V --> Below 1 V If the result is not as specified, the vehicle may be defective. In this case, check the harness, connector and fuse between the ECU and battery. Then repair or replace it if necessary.
- Disconnect the 2B, 2F, 2G and 2K instrument panel J/B connectors, and check the continuity and voltage of each terminal of the disconnected connectors.