Hybrid Battery System (diagnostics - Introduction)

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Scheme 369: PRECAUTION

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PRECAUTIONS FOR INSPECTING HYBRID CONTROL SYSTEM Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system. NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . After removing the service plug grip, turning the ignition switch to ON (READY) may cause a malfunction. Do not turn the ignition switch to ON (READY) unless instructed by the repair information. After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. HINT: Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly. Check the voltage at the terminals in the inspection point in the inverter with converter assembly. WARNING: Be sure to wear insulated gloves. NOTE: Do not allow any foreign matter or water to enter the inverter with converter assembly. Remove the 2 bolts and inverter terminal cover. Refer to «REMOVAL»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-control-system-service-information__removal) . TEXT IN ILLUSTRATION *1 Inverter Terminal Cover *2 Interlock Connector WARNING: An interlock connector is installed to the inverter terminal cover. Make sure to remove the inverter terminal cover before removing the inverter cover. NOTE: Make sure to pull the inverter cover straight up, as a connector is connected to the bottom of the cover. Remove the 7 bolts and inverter cover. WARNING: An interlock connector is installed to the inverter terminal cover. Make sure to remove the inverter terminal cover before removing the inverter cover. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Inspection point 10 minutes passed after removing the service plug 0 V HINT: Set the tester to DC 750 V or more to measure the voltage. When turning the ignition switch to on (IG) during inspections, do not press the ignition switch with the brake pedal depressed. WARNING: Turning the ignition switch with the brake pedal depressed causes the system to enter the READY-on state. This is very dangerous because high voltage may be applied to the inspection area. Turn the ignition switch off, wear insulated gloves, and disconnect the cable from the negative (-) terminal of the auxiliary battery before touching any of the orange-colored wires of the high-voltage system. NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . Turn the ignition switch off before performing any resistance checks. Turn the ignition switch off before disconnecting or reconnecting any connectors. When performing work involving high-voltage wires, use either a tool wrapping with vinyl insulation tape or a insulated tool. When high-voltage connectors are removed, wrap the connectors with insulation tape to prevent them from contacting foreign matter.
NOTICE FOR HYBRID CONTROL SYSTEM ACTIVATION When the warning light is illuminated, or the auxiliary battery has been disconnected and reconnected, attempting to turn the ignition switch to on (READY) may not start the system (the system may not enter the READY-on state) on the first attempt. If so, turn the ignition switch off and reattempt to start the hybrid system. NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) .
PRECAUTIONS FOR DISCONNECTING AMD TERMINAL HINT: The AMD terminal is connected to the positive terminal of the auxiliary battery. To prevent damage when the AMD terminal is being disconnected, use the following procedure. Be sure to disconnect the cable from the negative (-) terminal of the auxiliary battery before disconnecting the AMD terminal from the engine room junction block assembly. TEXT IN ILLUSTRATION *1 AMD Terminal NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . After disconnecting the AMD terminal, wrap the terminal with insulation tape. Be sure to reconnect the AMD terminal to the engine room junction block assembly before reconnecting the cable of the negative (-) terminal of the auxiliary battery. NOTE: A short circuit to ground may occur if the AMD terminal is disconnected before the cable is disconnected from the negative (-) terminal of the auxiliary battery. If a short circuit to ground occurs, it can result in an open circuit in a fusible link or fuse.
FOR COOLING FAN SYSTEM NOTE: When the ignition switch is turned off and the engine temperature is high, the engine water pump and cooling fans may operate for a maximum of 3 minutes depending on the auxiliary battery voltage. After turning the ignition switch off, keep hands and objects away from the fans when they are operating. HINT: If all of the following are met for a certain period of time during a few minutes immediately before the ignition switch is turned off, the cooling fans will continue to operate for a maximum of 3 minutes after the engine is stopped. This is performed to ensure restart ability. The Techstream indicates a very high coolant temperature. The Techstream indicates a high outside air temperature.
DISPOSING OF AN HV BATTERY When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent. WARNING: Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned. Therefore, make sure to return all HV batteries through an authorized collection agent. After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.
DISCONNECTING AND RECONNECTING NEGATIVE AUXILIARY BATTERY CABLE Before performing work on electronic components, disconnect the cable from the negative (-) auxiliary battery terminal to prevent damage to the electrical system or electrical components. TEXT IN ILLUSTRATION *1 Cable *2 Negative (-) Auxiliary Battery Terminal Before disconnecting and reconnecting the auxiliary battery cable, turn the ignition switch off and the headlight switch off. Then loosen the terminal nut completely. NOTE: Do not damage the cable or terminal. When the auxiliary battery cable is disconnected, the clock and radio settings and stored DTCs are cleared. Therefore, before disconnecting the auxiliary battery cable, make a note of them. NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . When the cable is disconnected from the negative (-) auxiliary battery terminal, initialize the following system(s) after the cable is reconnected. System Name See Procedure Power Door Lock Control System Refer to «INITIALIZATION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction__initialization)
IGNITION SWITCH EXPRESSIONS HINT: The type of ignition switch used on this model differs depending on specifications of the vehicle. The expressions listed in the table below are used in this information. Expression Ignition Switch (Position) Power Switch (Condition) Ignition switch off LOCK Off (Lock) Ignition switch ACC ACC On (ACC) Ignition switch ON (IG) ON (IG) On (IG) Ignition switch ON (READY) ON (READY) On (Ready)

DEFINITION OF TERMS

Terms	Definition
Monitor Description	Description of what the power management control ECU monitors and how to detects malfunctions (monitoring purpose and its details).
Related DTCs	A group of diagnostic trouble codes that are output by the power management control ECU based on the same malfunction detection logic.
Typical Enabling Condition	Preconditions that allow the power management control ECU to detect malfunctions. With all preconditions satisfied, the power management control ECU sets DTCs when the monitored value(s) exceeds malfunction threshold(s).
Sequence of Operation	Order of monitor priority, applied if multiple sensors and components are involved in a single malfunction detection process. Each sensor and component are monitored in turn and subsequent items are not monitored until the previous detection operation completes.
Required Sensor/Components	Sensors and components used by the power management control ECU to detect each malfunction.
Frequency of Operation	Number of times the power management control ECU checks for each malfunction during each driving cycle. "Once per driving cycle" means that the power management control ECU only checks for malfunctions once during a single driving cycle. "Continuous" means that the power management control ECU checks for malfunctions whenever enabling conditions are met.
Duration	Minimum time for which the power management control ECU must detect continuous deviation in monitored value(s) in order to set a DTC. Timing begins when typical enabling conditions are met.
Malfunction Thresholds	Value beyond which the power management control ECU determines malfunctions exist and sets DTCs.
MIL Operation	Timing of MIL illumination after a malfunction is detected. "Immediate" means that the power management control ECU illuminates the MIL as soon as a malfunction is detected. "2 driving cycles" means that the power management control ECU illuminates the MIL if the same malfunction is detected again during the next driving cycle.

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Scheme 375: ILLUSTRATION

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Scheme 376: ILLUSTRATION

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Scheme 377: SYSTEM DIAGRAM

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Scheme 380

Scheme 380: SYSTEM DESCRIPTION

BATTERY SMART UNIT CONTROL The battery smart unit converts the HV battery condition signals (voltage, current, and temperature), which are needed to determine the charging or discharging values that are calculated by the power management control ECU into digital signals, and transmits them to the power management control ECU via serial communication. A leakage detection circuit is provided in the battery smart unit in order to detect any leakage from the HV battery. Furthermore, the battery smart unit detects the voltage of the cooling fan, which is needed by the power management control ECU to effect cooling fan control. The battery smart unit also converts these signals into digital signals and transmits them to the power management control ECU via serial communication.

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

*: Use the Techstream
Use the following procedure to troubleshoot the hybrid battery system.

VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
CUSTOMER PROBLEM ANALYSIS NEXT: Go to next step
CONNECT TECHSTREAM TO THE DLC3* HINT: If the display on the tester indicates a communication fault, inspect the DLC3. NEXT: Go to next step
CHECK DTC AND SAVE FREEZE FRAME DATA*. Refer to «FREEZE FRAME DATA»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction__freeze-frame-data) HINT: Make sure to save freeze frame data because the data is necessary for a simulation test. For the hybrid vehicle control system, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs and their corresponding INF codes. By following the diagnosis path based on the combination of output DTCs and INF codes, it is possible to narrow down the problem early and avoid unnecessary diagnosis. NEXT: Go to next step
CLEAR DTC AND FREEZE FRAME DATA*. Refer to «DTC CHECK / CLEAR»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction) NEXT: Go to next step
CONDUCT VISUAL INSPECTION NEXT: Go to next step
CONFIRM PROBLEM SYMPTOMS HINT: If the engine does not start, perform steps 9 and 11 first. Result Result Proceed to Malfunction does not occur A Malfunction occurs B B --> GO TO STEP 10 A: Go to next step
DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS NEXT: Go to next step
CHECK FOR DTCS*. Refer to «DTC CHECK / CLEAR»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction) Result Result Proceed to DTC is output A DTC is not output B B --> GO TO STEP 11 A: Go to next step
REFER TO DTC CHART HINT: DTCs for the hybrid control system and hybrid battery system are displayed using the same menus on the Techstream. It is necessary to check the DTC charts for hybrid control system and hybrid battery system. Hybrid Control System - DTC chart. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction__diagnostic-trouble-code-chart) Hybrid Battery System - DTC chart. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction__diagnostic-trouble-code-chart) NEXT --> GO TO STEP 13
CONDUCT BASIC INSPECTION Result Result Proceed to Malfunctioning parts not confirmed A Malfunctioning parts confirmed B B --> GO TO STEP 15 A: Go to next step
CHECK ECU POWER SOURCE CIRCUIT NEXT: Go to next step
CONDUCT CIRCUIT INSPECTION Result Result Proceed to Malfunction not confirmed A Malfunction confirmed B B --> GO TO STEP 16 A: Go to next step
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction__check-for-intermittent-problems) NEXT --> GO TO STEP 16
CONDUCT PARTS INSPECTION NEXT: Go to next step
IDENTIFY PROBLEM NEXT: Go to next step
ADJUST AND/OR REPAIR NEXT: Go to next step
CONDUCT CONFIRMATION TEST NEXT --> END

CHECK FOR INTERMITTENT PROBLEMS

CHECK FOR INTERMITTENT PROBLEMS Perform a simulation test. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . For the simulation test, reproduce the driving conditions that were present when the trouble occurred. These conditions should be based on the customer's comments and freeze frame data that is recorded with DTCs, such as the opening angle of the accelerator pedal, SOC (state of charge), engine coolant temperature, engine rpm, and MG1/MG2 rpm and torque. Check the connector(s) and terminal(s). Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . Wiggle the harness and connector(s). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . Heat or cool suspected parts. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) .

Scheme 381

Scheme 381: TERMINALS OF ECU

Battery Smart Unit

TEXT IN ILLUSTRATION

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Standard (V)
D1-2 (TB2) - d1-8 (GB2)	L - L	Battery temperature sensor 2	HV battery temperature: -40 to 90 °C (-40 to 194 °F)	4.8 (-40 °C (-40 °C)) to 1.0 (90 °C (194 °F))
D1-3 (TB1) - d1-9 (GB1)	W - W	Battery temperature sensor 1	HV battery temperature: -40 to 90 °C (-40 to 194 °F)	4.8 (-40 °C (-40 °C)) to 1.0 (90 °C (194 °F))
D1-4 (TBO) - d1-10 (GBO)	R - R	Battery temperature sensor 0	HV battery temperature: -40 to 90 °C (-40 to 194 °F)	4.8 (-40 °C (-40 °C)) to 1.0 (90 °C (194 °F))
D1-5 (IB) - d1-12 (GIB)	Y - B	Current sensor	Ignition switch on (READY)	0.5 to 4.5
D1-6 (VIB) - d1-12 (GIB)	BR - B	Power source for battery current sensor	Ignition switch on (IG)	4.5 to 5.5
M39-3 (IGCT) - M39-6 (GND)	L - W-B	Control signal	Ignition switch on (READY)	11 to 14
M39-1 (BTH+) - M39-6 (GND)	R - W-B	Serial communication	Ignition switch on (IG)	Pulse generation (waveform 1)
M39-4 (BTH-) - M39-6 (GND)	G - W-B	Serial communication	Ignition switch on (IG)	Pulse generation (waveform 2)
M39-5 (FP0) - M39-6 (GND)	B - W-B	Battery cooling blower No. 0 monitor signal	Cooling blower activated	Pulse generation
M39-6 (GND) - Body ground	W-B	Ground	Always (continuity check)	Below 1 ohms

ECU TERMINAL CHART

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Oscilloscope waveforms HINT: Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted. Waveform 1 Item Content Terminal M39-1 (BTH+) - M39-6 (GND) Equipment Setting 2 V/DIV., 500 μs/DIV. Condition Ignition switch on (IG) HINT: The waveform will vary depending on the content of the digital communication (digital signal). Waveform 2 Item Content Terminal M39-4 (BTH-) - M39-6 (GND) Equipment Setting 2 V/DIV., 500 μs/DIV. Condition Ignition switch on (IG) HINT: The waveform will vary depending on the content of the digital communication (digital signal).

Scheme 384

Scheme 384: DIAGNOSIS SYSTEM

Scheme 385

DESCRIPTION The power management control ECU has a self-diagnosis system. If the computer, hybrid control system, or a component is not working properly, the ECU records the conditions that relate to the fault. The ECU also illuminates the master warning light in the combination meter assembly and provides other appropriate messages on the multi-information display, such as the HV system warning message, the HV battery warning message, on the discharge warning message. TEXT IN ILLUSTRATION *1 READY Light *2 Multi-information Display *3 Master Warning Light *4 MIL *5 Auxiliary Battery Charging Warning Light - - HINT: The master warning light will illuminate when the hybrid control system malfunctions and the light will blink when in inspection mode. When troubleshooting OBD II (On-Board Diagnostics) vehicles, the Techstream (complying with SAE J1987) must be connected to the DLC3 (Data Link Connector 3) of the vehicle. Various data in the vehicle ECM (Engine Control Module) can then be read. OBD II regulations require that the vehicle's on-board computer illuminate the MIL (Malfunction Indicator Lamp) on the instrument panel when the computer detects a malfunction in: The emission control system components. The powertrain control components (which affect vehicle emissions). The computer itself. In addition, the applicable DTCs prescribed by SAE J2012 are recorded in the power management control ECU memory. If the malfunction does not recur in 3 consecutive trips, the MIL turns off automatically but the DTCs remain recorded in the power management control ECU memory. To check for DTCs, connect the Techstream to the DLC3. The Techstream displays DTCs, freeze frame data, and a variety of hybrid control system data. The DTCs and freeze frame data can be cleared with the Techstream. In order to enhance the OBD function on vehicles and develop the Off-Board diagnosis system, Controller Area Network (CAN) communication is used in this system. CAN is a network which uses a pair of data transmission lines spanning multiple computers and sensors. It allows for high speed communications between the systems and simplification of the wire harness connections.
2 TRIP DETECTION LOGIC When a malfunction is first detected, the malfunction is temporarily stored in the power management control ECU memory (1st trip). If the same malfunction is detected during the next drive cycle, the MIL is illuminated (2nd trip).
FREEZE FRAME DATA The power management control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, as well as other data recorded at the time of a malfunction.
AUXILIARY BATTERY VOLTAGE Standard Voltage Switch Condition Specified Condition Ignition switch on (IG) 11 to 14 V If voltage is below 11 V, replace or recharge the auxiliary battery. NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) .
MIL (Malfunction Indicator Lamp) The MIL is illuminated when the ignition switch is first turned to on (IG), before the READY indicator comes on. When the READY indicator turns on, the MIL should turn off. If the MIL remains illuminated, the diagnosis system has detected a malfunction or abnormality in the system. HINT: If the MIL is not illuminated when the ignition switch is first turned to on (IG), check the MIL circuit. Refer to «MIL Circuit»(/toyota/prius-c/i-2011-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-u0293-circuit-tests) .

Scheme 386

Scheme 386: DTC CHECK / CLEAR

CHECK FOR DTCS Connect the Techstream to the DLC3. Turn the ignition switch to on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. Check the DTCs and freeze frame data, and then write them down. Check the details of the DTCs. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction__diagnostic-trouble-code-chart) .
CHECK FREEZE FRAME DATA AND INFORMATION If a DTC is present, select it in order to display its freeze frame data. Read the freeze frame data recorded when the DTC was set. NOTE: A 3-digit information code (INF code) will be displayed as the value for one of the Information 1 to Information 5 lines. Read the information for the information code. Select the item from among Information 1 to Information 5 that has an information code and click the engine icon to view the additional information.
CHECK FOR DTCS (SYSTEMS OTHER THAN POWER MANAGEMENT CONTROL ECU) HINT: The power management control ECU maintains communication with other computers, including the ECM, skid control ECU and power steering ECU. Therefore, if the power management control ECU outputs a warning, it is necessary to check and record the DTCs of all systems. If DTCs are present, check the relevant systems. HINT: If DTCs for the CAN communication system are present in addition to other DTCs, first troubleshoot and repair any malfunctions in the CAN communication system.
CLEAR DTCS NOTE: Clearing the DTCs will also clear the freeze frame data, information. Refer to «FREEZE FRAME DATA»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction__freeze-frame-data) , and operation history data. Refer to «OPERATION HISTORY DATA»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-control-system-diagnostic-codes-p0069-273-p0a75-516__operation-history-data) . Connect the Techstream to the DLC3. Turn the ignition switch to on (IG). Turn the Techstream on. Check that park (P) is selected. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. Clear DTCs and freeze frame data.
CLEAR PERMANENT DTC HINT: Even if the following procedure is not performed, permanent DTCs are cleared by obtaining a normal judgment during 3 consecutive driving cycles. Connect the Techstream to the DLC3. Turn the ignition switch to on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. Check if permanent DTCs are stored. HINT: If permanent DTCs are not output, it is not necessary to continue this procedure. Clear the DTCs. Perform the respective confirmation driving patterns in order to obtain a normal judgment for the output DTCs. HINT: Confirmation driving patterns do not need to be performed for misfire and fuel system DTCs. For the confirmation driving pattern, refer to the procedures for the relevant DTC. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-battery-system-diagnostics-introduction__diagnostic-trouble-code-chart) . Perform the universal trip. HINT: The driving pattern to obtain a normal judgment and the universal trip driving can be performed consecutively in the same driving cycle. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-c/i-2011-2015/remont/hoistjack/#introduction) . Idle the engine for 30 seconds or more. Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more. HINT: It is possible to complete the drive pattern even if the vehicle decelerates to less than 40 km/h (25 mph) during the driving cycle provided that the vehicle is driven at 40 km/h (25 mph) or more for a total of 5 minutes. Allow 10 minutes or more to elapse from the time the engine is started. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. Check that the permanent DTCs have been cleared. HINT: The permanent DTCs are cleared when the universal trip is completed.

FREEZE FRAME DATA

FREEZE FRAME DATA HINT: The power management control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. It can be used for estimating or duplicating the vehicle conditions that were present when the malfunction occurred. To confirm the details of the hybrid control system, check the detailed information for the DTC information code in the Data List (INF code). Connect the Techstream to the DLC3. Turn the ignition switch to on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. Select a DTC in order to display its freeze frame data. Check the freeze frame information recorded with the DTC. HINT: For the freeze frame data chart. Refer to «INFORMATION / FREEZE FRAME DATA»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-control-system-diagnostic-codes-p0069-273-p0a75-516__information-freeze-frame-data) .

DATA LIST / ACTIVE TEST

Data List NOTE: Some Data List values may vary significantly if there are slight differences in the environment in which the vehicle is operating when measurements are obtained. Variations may also occur due to aging of the vehicle. Due to these considerations, it is not always possible to provide definite values to be used for judgment of malfunctions. It is possible that a malfunction may be present even if measured values are within the reference range. In the event of a problem with intricate symptoms, collect sample data from another vehicle of the same model operating under identical conditions in order to reach an overall judgment by comparing all the items in the Data List. Connect the Techstream to the DLC3. Turn the ignition switch to on (IG). Enter the following menus: Powertrain / Hybrid Control / Data List. Check the results by referring to the following table. HINT: For the data list. Refer to «DATA LIST / ACTIVE TEST»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction__data-list-active-test) .
Active Test Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data list information can be displayed while performing Active Tests. NOTE: It is necessary to use caution, because if the tester DLC connector becomes disconnected or if a communication error occurs during an Active Test, the vehicle could become inoperative (the READY indicator may go off). Connect the Techstream to the DLC3. Turn the ignition switch to on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Hybrid Control / Active Test. According to the display on the Techstream perform the appropriate active test. HINT: For the active test chart. Refer to «DATA LIST / ACTIVE TEST»(/toyota/prius-c/i-2011-2015/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction__data-list-active-test) .

DIAGNOSTIC TROUBLE CODE CHART

HYBRID BATTERY SYSTEM

Hybrid Battery System (diagnostics - Introduction) Toyota Prius C I