Question about 2002 Toyota Land Cruiser

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ENQUIRY FOR TOYOTA Land Cruiser 90 vin: JTEBZ99J100036211 Production in 2002 1.After depletion the storage battery shone lamps of ABS; VSC and light signal throughout braking. 2.We make diagnostic appliance TEXA, whereby relocated following errors: C 0279 - solenoid valve circuit C 1223 - ABS adjustment How removable fault? Can receive from you detailed circuitry? 3. Exists problem gearshift more accurately than up gear from 2nd to 3hd. The disks, sealing piston rings, filter and oil. Does ABS, VSC shifting? With what software can do diagnostics Gearbox? We work of REFERENCE: DIAGNOSTICS error Pages from literature C 0279 solenoid valve circuit Di-531;532;533 C 1223 ABS adjustment Di-505;506;507;540

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  • svilen_yovko Oct 12, 2010


    I check the ABS Solenoid Relay and the electric circuit. I think that the ABS Solenoid Relay isn't out of order. The impedance of coil is 76,5 oms. What is your opinion, is this normal? Is possible the problem is connected with the repairs of the automatic transmission?

    Regards, Svilen

  • svilen_yovko Oct 28, 2010

    Hello! We replace the ABS Relay and check the electric circuit. We check the rear ABS speed sensors. The impedance is: for RH 1302 ohms, and for LH 1261 ohms. When car is in drive with hand-hald tester we can 3 fault codes C0279, C1223 and c 1336. We can to clear C1336 with tester, but in next drive we can again C1336. C0279 and C1223 we can't clear with tester. Warning lights VSC, ABS and Brake are switch on. What can we make now.
    Regards Svilen

  • svilen_yovko Oct 29, 2010

    Hello! I check the continuity between Green/White and Red/Blue - 32 ohms; between Red/Blue and Red/Black - 14,9 ohms and between Green/White and Red/Black - 18 ohms. I check this values 9 wire conector near the speed box. I thing that this conector is to the Rear switch. Is this true conector? I don't find the 3 wire conector.
    Regards Svilen.



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Hello! I'm working on the problem...It's involved; I'll get back to you as soon as I have an answer...


Posted on Oct 07, 2010

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  • David Burbee
    David Burbee Oct 08, 2010

    Hello! Fault codes; C0279 and C1223 are caused by a shorted contact in the ABS Solenoid Relay...This relay is located in the under-hood junction box...When the battery was replaced or charged, A current spike may have damaged the relay...I do not have the capability to send a circuit diagram of that size...If you purchase a repair manual,wiring diagrams for the entire vehicle are included...However, replacing the ABS Solenoid Relay should clear the fault...After replacement, disconnect the negative battery cable for several minutes, then reconnect...This will clear the fault code from the computer...A defective relay effects the VSC; Which in turn causes shift timing to be incorrect...Diagnostics performed by the vehicles ECU produced the error codes...Change the Relay...Clear the codes...And send results...

    NOTE...Make certain that both + and - battery cables are clean and tight on both ends....


  • David Burbee
    David Burbee Oct 12, 2010

    Hello! Yes, that's a correct reading...Typical coil resistance is 78 ohms...It's a Bosch Single Pole Double Throw (SPDT) relay...It's the contacts were concerned with...The ABS Solenoid Relay is named as such because it supplies +12 volts to the ABS Actuator Solenoids...The junction box has a 15 pin connector (B)...Pin 14 is a Blue/Black wire...Grounded when relay is not pulled and +12v when relay is pulled...This set of relay contacts are the primary concern...A Bosch SPDT is inexpensive...Under $10...Check pin #14 by inserting a safety pin into the rear of the in-place connector on the Blue/Black wire...Wire is grounded with key off and +12 volts with engine running...If not replace the relay...The ABS/VSC ECU controls the relay...Lets hope the ECU is OK...There are two other relays involved...ABS Motor relays #1 and 2...Also Bosch relays only they are single Pole Single Throw (SPST)...You can pull all three...Take them to an auto parts store for identification and replace them...It's your dime...

    In conclusion, I do not believe there is a fault in the transmission...It is an effect not a cause...Test the contacts on the ABS Relay...Replace if defective.................Saailer

  • David Burbee
    David Burbee Oct 28, 2010

    Hello! Since the relay has been replaced, the fault is located in the Deceleration Sensor (DS) or it's circuit...The Park/Neutral switch is part of the circuit...The DS is located under the console between the seats...Near the Air Bag sensor (so, be careful)...The DS has a 4 wire connector with wire colors...Violet, Pink, Yellow, and Black...This sensor requires calibration...I'll send this procedure after we check the P/N Switch...The P/N SW. has a 3
    wire connector...Green/White...Red/Black...And Red/Blue..With vehicle in park check for continuity between Green/White and Red/Blue...Must read OPEN...Next between Red/Blue and Red/black...Must read SHORT...Send results...Saailer

  • David Burbee
    David Burbee Oct 29, 2010

    Hello! The last readings you sent confirm the fault...The Park/Neutral switch is defective and needs to be replaced... The Green/White lead must read open to the Red/Black and Red/blue with the lever in park...The Green/White is the Neutral switch contact and should be open to the other contacts while in the park position...Cost is around $225...See picture below...Saailer



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