Jeza

I have an ICarsoft reader for the early toyota, 2003 hybrid, and techstream. Techstream gives far more info and is easier to read live data. However I find if the Hybrid system has gone into safe mode, or worse, neither can communicate with the ECU. The early models communicate through the OBD port on the J line to the engine ECU, the canbus is very limited.

C1213 - The skid control computer communicates with the hybrid control computer and controls the braking force in coordination with the motor regenerative operation. Reception or transmission to or from the hybrid control computer is not possible. Check the sub code on the data page, could be 152, 153 or 154. This is not necessary a fault, if there is an issue with the hybrid system it stops talking to the other systems. P1636/81 When communication from the Engine Control Computer with the hybrid vehicle control computer is lost Possible issues - Wire Harness or Connector or computers P3002 - When an error occurs in communication from the hybrid vehicle computer to the battery computer ASSY Wire Harness or Connector Hybrid Vehicle Computer Battery computer assembly As the hybrid computer seems to be the common issue I would check all the connectors and harnesses on both the ECU, hybrid computer and battery ECU for damage and water ingress. ECU's are located behind the passenger stowage box and the battery ECU under the passenger seat, connector accessible behind forward trim. I can give you the connectors and relevant pins to check for continuity of each harness. Interestingly on P3002 fault diagnosis the first check is to "Stop operation of all aftermarket vehicle products or electrical products brought into the vehicle." then check if the fault code reappears. attached images are for P3002.

If the light comes on, when you stop check for codes before turning the engine off.

The inverter/converter is very well sealed as is the battery. I would look at this as two separate issues to start with. Do you get any warning lights come on? Is the 12v aux battery good, full capacity and holding charge? When trying to start can you hear the Hybrid relays click from under the passenger seat? Have you checked for any jobd fault codes? Low power could be the engine or the Hybrid system sensing an issue and going into safe or limp mode, engine revs more especially at low speeds. I presume the water leak clear water and not coolant!

Knock sensor P0325/52 - When the knock control sensor is disconnected or shorted for 10 seconds or more at an engine speed of 2000 to 4500 rpm after the engine has warmed up. Possible issues; Wire Harness or Connector - ECU connector B, kah11476 pin 20 Knock Control Sensor - this is hidden under the inlet manifold, I read somewhere that it is possible to access it from going in from under the engine!! Knock control sensor not tightened properly Engine Control Computer check the continuity between the engine control computer's vehicle side connector B20 (KNK1) terminal and the body earth. standard: No continuity 1885/77 - When the hydraulic pressure command value is 0.5 MPa or less and the sensor output value is 3.0 MPa or more for 3 seconds or more. Wire Harness or Connector Hybrid vehicle transaxle assembly Engine Control Computer Disconnect connector D of the engine control computer. check the resistance between the engine control computer's vehicle side connector D2 (SLS+) terminal and D3 (SLS-) terminal. kah11638 Reference value: 5.0-5.6 ohms. I would remove all the ECU connectors, spray with electrical contact cleaner, check for damage, corrosion and damage to the harnesses. Also check in the gearbox area for any damaged wiring and check connectors ar seated correctly.

This is a connector on the head unit that feeds in the vehicle speed. Note this is for a 2.4 10 series hybrid , your wiring will probably be different.

Thanks, but I have adapted a script from another menu .html file and now the wiring menu works. Sounds a bit dodgy buying from a Russian in crypto 🤔

C1310 is a traction control malfunction, this normally occurs when there is a hybrid issue the computer stops regenerative braking and stability control via the rear motor. P3009 When the insulation resistance between the high voltage circuit and the body is below the standard value. 10M ohm. Defective parts listed include the inverter and all the cables that might have been disturbed during the sensor change. How ever, suggest clearing code switch off ignition then on again, not start, and after 2 mins check codes. P3009 relates to the main battery, HV, cables within the battery assy, which I guess you did not disturb apart from the service grip. It could be the main battery cables at the inverter which you disconnected. Has the sensor replacement fixed that issue?

Power output sockets are 110v ac 1500w max, american style 2 pin plug. To use engine must be on, READY light on, 110v select push button, to the right of the steering wheel, push in and the advisory light in the switch will light. Use a continental adaptor to charge phone, laptop, air fryer, induction hob etc with regard to max power and voltage applicable.

Hi Chris I have this CD but would not install onto my windows 11 computer, so I just had to copy the files manually and open index2.html. I also tried installing it under windows XP, that didn't work either. I have translated most of the disc but some reason the wiring diagram menu doesn't work due to a Javascript function that is missing, I think. "function FC(WO)" Can you search your disc to see if is present. Most of the .gif images in the description section have a .pdf version as well but I can't get this to load instead. Next is to find a program that will open, translate scanned .pdf files then save automatically!

Yes, unfortunately. Secondary pulley rotation speed sensor that detects the output shaft rotation speed is placed on the secondary pulley shaft (reduction drive gear), which is NOUT. This the top one on the diagram to the rear of the square shape bit of the gearbox. rab0711c.pdf

DTC P0500 is a vehicle speed fault, not a gearbox speed sensor issue. Gearbox speed sensor faults are DTC P1820 and P1825. The speed signal comes from the wheel speed sensors to the skid control computer then to the combination meter, from there is a wire to the engine ECU, head unit, power amplifier and cruise control. Possibly in that line also is a chip to convert kph to mph. As the issue occured after installing your new head unit I would look at the speed signal wire to that. Grey connector, pin 3, violet colour

What about the cruise control you fitted, has that done something to the speed signal?

Hi There is no alternator on the hybrid, the aux battery is charged from the inverter / converter, 13.6v seems reasonable if the aux battery is fully charged. You have replaced the aux battery so the terminals should be good, check the earth straps, battery to body and body to engine. Anything wrong with the hybrid system would throw up codes. Could be the engine ECU, clutching at straws now without codes.

P3101-548 Abnormal signal received from engine control computer (CVT system abnormality) The hybrid vehicle computer performs fail-safe control based on an abnormality signal from the engine control computer (when the engine control computer detects an abnormality that may affect THS control). This points to the speed sensor on the gearbox as the signal goes to the engine ECU, then the hybrid ECU goes into limp mode. P1825 is the speed sensor circuit NOUT (speed out), wiring or the sensor, there are no other connectors in the circuit. Did you check the NIN circuit to ensure you have the correct connector and pins? Just to rule out the engine ECU being faulty!!