Measure voltage between terminal RF CF of AC amplifier and body ground in each
Below 1,520 kPa 15.5 kgf cm2, 220 psi Above 1,520 kPa 15.5 kgf cm2, 220 psi Remove RDI fuse and CDS fuse from engine room J B. CHECK Check continuity of RDI fuse and CDS fuse. OK Check for short in all the harness and components connected to the RDI fuse See attached wiring diagram . Check engine coolant temp. switch See page AC-84 . 7 Check harness and connector between A C amplifier and pressure switch, pressure switch and body ground See page IN-41 . 8 Check harness and connector between A C...
Inspection Procedure Lko
Disconnect the connector B3 from the brake actuator. CHECK Check continuity between each of terminals SLA and SLA-, and terminals SLR and SLR- of brake actuator. Resistance of each solenoid approx. 2.3 Q at 20 C 68 F . 2 Check for open and short circuit in harness and connector between brake ECU and brake actuator See page IN-41 . If the same code is still output after the DTC is deleted, check the contact condition of each con nection. If the connections are normal, the ECU may be defective.
Identification Information
VEHICLE IDENTIFICATION AND ENGINE AND MOTOR SERIAL NUMBER The vehicle identification number is stamped on the vehicle identification number plate and the certification label, as shown in the illustration. A Vehicle Identification Number Plate B Certification Label a The engine serial number is stamped on the engine block, as shown in the illustration. b The motor serial numbers is stamped, as shown in the illustration.
Check the screen setting Day or Night mode
Check terminal ACC when turn ignition switch ACC or ON position. OK Check terminal R, G, B, VR or VG. OK R, G, B, VR or VG See Navigation ECU of TERMINAL OF ECU Replace the wire harness when all terminals are faulty. Replace the wire harness when SYNC terminal is faulty.
DTC CLEARANCE Using TOYOTA handheld tester
a Hook up the TOYOTA hand-held tester to the DLC3. b Clear the DTCs by following the prompts on the tester screen. Please refer to the TOYOTA hand-held tester operation's manual for further details. 8. RELEASE METHOD OF AIRBAG ACTIVATION PREVENTION MECHANISM An airbag activation prevention mechanism is built into the connector for the squib circuit of the SRS. When release of the airbag activation prevention mechanism is directed in the troubleshooting procedure, as shown in the illustration...
Check voltage between terminal BATT of ECM connector and body ground
Remove the ECM with connector still connected See page Measure voltage between terminal BATT of the ECM connector Remove the EFI fuse from the engine room J B. CHECK Check for short in all the harness and components connected to EFI fuse. Check and repair harness or connector between battery and EFI fuse and ECM See page IN-41 .
Circuit Description Spw
Since the ECU back-up power source is used for DTC and freeze frame data memory, the back-up power source BATT continues to be supplied to the HV ECU even though the ignition switch is turned OFF. DTC P1600 - Information code 117 HV ECU back-up power source circuit malfunction
Inspection Procedure Via
Check installation condition of inverter terminal cover and sensor cover. 2 Check continuity of wire harness between interlock switch No. 1 terminal and HV ECU ILK terminal and interlock switch No. 2 terminal and inverter CVRSW terminal See page IN-41 . 3 Check continuity between inverter CVRSW terminal and body ground See page IN-41 . Confirm that interlock switch is not defective. Replace it if defective. Check interlock switch See page HV-38
Check HTR fuse
Remove HTR fuse from engine room J B. CHECK Check for short in all the harness and components connected to the HTR fuse See page IN-41 . 3 Check harness and connector between heater main relay and body ground, heater main relay and body ECU See page IN-41 . Check multiplex communication system See page DI-762 .
SST Special Service Tools Jgh
09214-76011 Crankshaft Pulley Replacer 09318-12010 Transfer Bearing Adjusting Nut 09520-00031 Rear Axle Shaft Puller 09703-30010 Brake Shoe Return Spring Tool 09718-00010 Shoe Hold Down Spring Driver 09751-36011 Brake Line Union Nut 10 x 12 mm 09843-18040 Diagnosis Check Wire No.2 09630-00014 Power Steering Gear Housing
The HV ECU checks the generator resolver signal voltage and circuit impedance
Generator resolver inter-phase short when there is a history that the state of malfunction continued during inverter fail safe mode Open or short in generator resolver circuit when there is a history that the state of malfunction continued during inverter fail safe mode
Check air outlet damper position sensor
Remove air outlet servomotor See page AC-57 . CHECK Measure resistance between terminals 1 and 2 of air outlet servomotor assembly connector. OK While operating air outlet damper control servomotor as in the procedure on page DI-924, measure resistance between terminals 2 and 3 of air outlet damper control servomotor. OK As the air outlet servomotor moves from DEF side to FACE side, the resistance decreases gradually without interruption. Replace air outlet control servomotor assembly.
Circuit Description Wbl
When starting the engine with ignition switch HV ECU receives ST signal and decides to start the engine, and send the signal of the engine start prior signal to the ECM by the communication between the ECM and HV ECU. ECM receives that signal and turns ON the circuit opening relay slightly earlier, then turns the fuel pump. When starting the engine in an intermittent operation With the cranking by MG1, NE signal comes in immediately, so the ECM receives the generation of NE signal and turns the...
Circuit Description Qty
The HV ECU monitors the communication signal from the ECM and if it cannot monitor it due to noise or other When using an OBD0 scan tool other than TOYOTA hand-held tester, check all the steps. When using TOYOTA hand-held tester, confirm the information code and check it. DTC P3106 - Information code 209, 210, 211 When communication between ECM and HV ECU is abnormal 1 sec. after ignition is turned ON
In case of using TOYOTA handheld tester PREPARATION
a Connect the TOYOTA hand-held tester to the DLC3. b Turn the ignition switch ON, and push the TOYOTA hand-held tester main switch ON. c Select the DATALIST mode on the TOYOTA hand-held tester. CHECK Depress the brake pedal more than 40 times with the ignition switch OFF then turn the ignition switch ON and check the pressure switch PL condition. When a pressure in power supply system is released, reaction force becomes heavy and stroke becomes
Circuit Description Rff
If the system main relay is deposited, it might be impossible to shut down the high voltage system. Therefore, the HV ECU checks the system main relay and stops the system if malfunction is detected. DTC P3115 - Information code 231, 232, 233 System main relay terminal deposited System main relay - terminal deposited System main relay amp - terminal deposited
Check voltage between terminals TP and SGTP of AC amplifier connector
a Remove center cluster module control with connectors still connected. b Turn ignition switch ON. CHECK Change the set temperature to activate the air mix damper, and measure the voltage between terminals TP and SGTP of A C amplifier connector every time the set temperature is changed. OK As the set temperature increases, the voltage decreases gradually without interruption. Proceed to next circuit inspection shown on problem symptoms table See page DI-886 . However, if DTC 31 or 41 is...
DTC P Information code Rfa
Open in motor inverter current sensor V phase sub sensor Converter amp inverter assembly Open in motor inverter current sensor V phase main sensor Open in motor inverter current sensor W phase sub sensor Open in motor inverter current sensor W phase main sensor Motor inverter current sensor malfunction V phase sub sensor Motor inverter current sensor malfunction V phase main sensor Motor inverter current sensor V phase performance problem Motor inverter current sensor malfunction W phase sub...
Ng Ghf
Check continuity between terminal CG of DLC3 and body ground. Repair or replace harness or connector. 3 Check for open and short circuit in harness and connector between ECM and DLC3, and DLC3 and body ground See page IN-41 . Check and replace ECM See page IN-41 . This circuit cuts air conditioning operation during vehicle acceleration in order to increase acceleration performance. During acceleration with the vehicle speed at AT 25 km h 16 mph , MT 40 km h 25 mph or less, engine speed at AT...
Continuity 1
Resistance of each solenoid approx. 2.3 Q at 20 C 68 F . 7 Check for short circuit in harness and connector between brake ECU and brake actuator See page IN-41 .
Recommended Tools Bmp
09082-00040 TOYOTA Electrical Tester. Qg H 09200-00010 Engine Adjust Kit . PREPARATION - HYBRID VEHICLE CONTROL HYBRID VEHICLE CONTROL RECOMMENDED TOOLS 09082-00040 TOYOTA Electrical Tester.
Circuit Description Wqw
Either of the following 1. or 2. is detected 1. When the ignition switch is ON, the condition that the voltage of the terminal PREG in brake ECU is 0.14 V or less or 4.85 V or more, or that of terminal VREG is 4.4 V or less or 5.6 V or more continues for 1.2 sec. or more. 2. At a vehicle speed of 15 km h 24 mph or more, when both the brake switch and hydro motor are OFF, the voltage ratio of the terminal PREG to VREG of brake ECU is 0.06 or less or 0.14 or more continues for 8 sec. and this...
Check room temperature sensor
Remove room temperature sensor See page AC-60 . CHECK Check resistance between terminals 1 and 2 of room temperature sensor connector at each temperature. OK at 25 C 77 F 1.6 - 1.8 kQ at 40 C 104 F 0.5 - 1.7 kQ As the temperature increases, the resistance decreases. 3 Check harness and connector between A C amplifier and room temperature sensor See page IN-41 .
Check for B short in wire harness between stop light switch and terminals STP
Under the normal condition, the voltage of the HV ECU STP terminal is 0V when the brake pedal is released with the ignition OFF. If there is any output of voltage at this time, the stop light switch circuit has B short. Check and replace stop light switch See page BE-32 .
Toyota Prius Am2 Fuse
Remove the AM2 fuse from the engine room J B. CHECK Check the continuity of the AM2 fuse. OK Check for short in all harness and components connected to AM2 fuse See attached wiring diagram . Check and repair harness and connector between battery and ignition switch, and ignition switch and ECM.
OBD II scan tool excluding TOYOTA handheld tester Gjn
a Start the engine and warmed it up. b Disconnect the OCV connector. c Apply battery positive voltage between terminals of the OCV.
Check combination meter or repair SRS warning light circuit
Using simulation method, reproduce malfunction symptoms See page IN-30 . Check harness between AM2 fuse and SRS warning light.
How To Proceed With Troubleshooting
Carry out troubleshooting in accordance with the procedure on the following page. Here, only the basic procedure is shown. Details are provided in Diagnostics section, showing the most effective methods for each circuit. Confirm the troubleshooting procedures first for the relevant circuit before beginning troubleshooting of that circuit. Ask the customer about the conditions and the environment when the problem occurred. 'Symptom Confirmation and Diagnostic Trouble Code Check 'Symptom...
Ok Hxm
Remove the EMPS fuse from engine room R B No. 3. CHECK Check for short circuit in harness and all components connected to EMPS fuse See attached wiring diagram . Check for open and short circuit in harness and connector between EMPS ECU and battery See page IN-41 .
Input Signal Check Test Mode
a In case of not using TOYOTA hand-held tester Check the input signal. 1 Turn the ignition switch OFF. 2 Using SST, connect terminals Ts and CG of DLC3. SST 09843-18040 3 Check the warning light goes off with driving more than 20 km h 12 mph . If the warning light goes off during driving, the sensor can be judged to normal. 5 Using SST, connect terminals Tc and CG of DLC3. SST 09843-18040 6 Read the number of blinks of the PS warning light. See the list of DTC shown on the next page. Even a...
Info Nph
a Turn the ignition switch to ON. b For the connector on the airbag sensor assembly side between the side airbag sensor assembly RH and the airbag sensor assembly, measure the voltage between the body ground and each of SSR , VUPR, ESR and SSR-. Repair or replace harness or connector between side airbag sensor assembly RH and airbag sensor assembly. a Connect the connector to the side airbag sensor assembly RH . b Connect the connector to the airbag sensor assembly. c Connect negative -...
How To Determine Bolt Strength
_SERVICE SPECIFICATIONS - STANDARD BOLT_ _SERVICE SPECIFICATIONS - STANDARD BOLT_ Nut with 1 or more marks on one side surface of the nut. Use the nut with the same number of the nut strength classification or the greater than the bolt strength classification number when tightening parts with a bolt and nut. Example Bolt 4T 1,000 50 rpm A C OFF 1,200 50 rpm A C ON Camshaft timing sprocket wear w chain Crankshaft timing sprocket wear w chain Valve seat Refacing angle Contacting angle Contacting...
circuit description Qsj
The P squib circuit consists of the airbag sensor assembly and front passenger airbag assembly. It causes the SRS to deploy when the SRS deployment conditions are satisfied. For details of the function of each component, see OPERATION on page RS-2. DTC B0105 53 is recorded when a short is detected in the P squib circuit. Short circuit in P squib wire harness Airbag sensor assembly malfunction Front passenger airbag assembly P squib
Check voltage between terminal ACT of AC amplifier connector and body ground
a Remove center cluster module control with connector still connected. b Start the engine and push AUTO switch. CHECK Check the voltage between terminal ACT of A C amplifier connector and body ground when magnetic clutch is ON and OFF by A C switch. OK
Terminals Of Ecu 1
SFRH B10 - 1 - GND B10 -6, 31, B11 - 8, 17 SFRR B10 - 2 - GND B10 -6, 31, B11 - 8, 17 SMC2 B10 - 3 - GND B10 -6, 31, B11 - 8, 17 IG switch ON, ABS warning light OFF Brake pedal released SMC1 B10 - 4 - GND B10 -6, 31, B11 - 8, 17 IG switch ON, ABS warning light OFF Brake pedal released SS B10 - 5 - GND B10 - 6, 31, B11 - 8, 17 IG switch ON, ABS warning light OFF Brake pedal released SFLR B10 - 7 - GND B10 -6, 31, B11 - 8, 17 SRRH B10 - 8 - GND B10 -6, 31, B11 - 8, 17 SRRR B10 - 9 - GND B10 -6,...
Circuit Description Soh
If driving the vehicle with the DCDC converter malfunctioning, the voltage of the auxiliary battery will drop, which will make it impossible to keep driving the vehicle. Therefore, HV ECU checks the operation of the DCDC converter and gives warning to the driver if malfunction is detected. HINT When using an OBD0 scan tool other than TOYOTA hand-held tester, check all the steps. When using TOYOTA hand-held tester, confirm the information code and check it. DTC P3125 - Information code 263, 264,...
When MIL is ON but the DTC of the engine is not memorized it may be because of
Open or short in mass air flow meter circuit Mass Air Flow Circuit Range Performance Problem Intake Air Temp. Circuit Malfunction Open or short in intake air temp. sensor circuit Intake air temp. sensor built into mass air flow meter Engine Coolant Temp. Circuit Malfunction Open or short in engine coolant temp. sensor circuit Engine coolant temp. sensor Engine Coolant Temp. Circuit Range Performance Problem Engine coolant temp. sensor Throttle Pedal Position Sensor Switch A Circuit Malfunction...
DTC B is not output Azr
Codes other than code B0113 42 may be output at this time, but they are not relevant to this check. a Turn the ignition switch to LOCK. b Disconnect negative - terminal cable from the battery, and wait at least for 90 seconds. c Connect the side airbag assembly RH connector. d Connect negative - terminal cable to the battery, and wait at least for 2 seconds. a Turn the ignition switch to ON, and wait at least for 20 seconds. b Clear the DTC stored in memory See step 5 on page DI-509 . c Turn...
Failsafe Chart
If any of the following codes is recorded, the ECM enters fail-safe mode. Intake air temp. is fixed at 20 C 68 F Engine coolant temp. is fixed at 80 C 176 F The following condition must be repeated at least 2 times The heater circuit in which an abnormality is detected is turned off IGF signal is detected for 2 consecutive ignitions
The HV ECU checks the current value of the battery and detects malfunction DTC
B short in IB terminal circuit of HV ECU Open or short in IB terminal circuit of HV ECU When the difference between battery current of HV ECU and current of battery is large.
The HV ECU checks the motor resolver signal voltage and circuit impedance to
Motor resolver inter-phase short when there is a history that the state of malfunction continued during inverter fail safe mode Open or short in motor resolver circuit when there is a history that the state of malfunction continued during inverter fail safe mode
Check voltage between terminal BM of ECM connector and body ground
Remove the ECM with connector still connected See page Measure the voltage between terminal BM of the ECM connector and body ground. OK Check and repair harness or connector between battery and ETCS fuse, and ETCS fuse and ECM See page IN-41 . Throttle Control Motor Lock Malfunction Throttle motor is operated by the ECM and it opens and closes the throttle valve. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body and it...
Inspection Procedure Qgp
1 Check voltage between terminals TRQV and TRQG of EMPS ECU. Remove the EMPS ECU with connectors still connected. CHECK Measure the voltage between terminals TRQV and TRQG of 2 Check for open and short circuit in harness and connector between terminals TRQV and TRQG of EMPS ECU connector See page IN-41 . 3 Check voltage between terminals VT1 and GND, VT2 and GND of torque sensor connector. Remove the torque sensor with connectors still connected. CHECK Measure the voltage between terminals VT-i...
Check resistance of camshaft position sensor Signal generator See page IG
Reference INSPECTION USING OSCILLOSCOPE Refer to DTC P0335 on page DI-76 for the INSPECTION USING OSCILLOSCOPE. 2 Check for open and short in harness and connector between ECM and camshaft position sensor See page IN-41 . 3 Inspect sensor installation and tooth of camshaft timing pulley See page EM-15 . Catalyst System Efficiency Below Threshold
Circuit Description Gaj
The HV ECU performs multiple checks to avoid any malfunction that may occur through the communication with the brake ECU due to a noise, etc. When using an OBD0 scan tool other than TOYOTA hand-held tester, check all the steps. When using TOYOTA hand-held tester, confirm the information code and check it. DTC P3109 - Information code 218, 219, 220, 221 When communication between brake ECU and HV ECU is abnormal 1.5 sec. after ignition is turned ON
Resistance Below Q
a Connect the connector to the airbag sensor assembly. b Using a service wire, connect D and D- of the connector on the spiral cable side between the spiral cable and the steering wheel pad D squib . c Connect negative - terminal cable to the battery, and wait at least for 2 seconds. a Turn the ignition switch to ON, and wait at least for 20 seconds. b Clear the DTC stored in memory See page DI-509 . c Turn the ignition switch to LOCK, and wait at least for 20 seconds. d Turn the ignition...
Terminals Of Ecu Ptm
GND Body ground A7-7 Body ground IG ON. Head lamp ON Rear defogger ON Set temp. MAX. HOT IG ON. Head lamp OFF Rear defogger OFF Start engine. Water temp. Below 90 C Refrigerant pressure Below 1,520 kPa Start engine. Water temp. Approx. 90 C Refrigerant pressure Above 1,520 kPa Engine speed Above 500 rpm Blower motor Operate Engine speed Above 500 rpm Blower motor Not operate Start engine Head lamp OFF Rear defogger OFF Set temp. MAX. WARM Blower mode dial HI Mode selector F D Water temp. Below...
Circuit Description Vso
Open or short in vacuum sensor circuit Open or short in vacuum sensor circuit Vacuum sensor for HC adsorber and catalyst system After confirming DTC P1430, use the hand-held tester to confirm the manifold absolute pressure from the CURRENT DATA.