Hybrid Control System (Diagnostic Codes & Circuit Tests) (Phv): Overview Toyota Prius III

DESCRIPTION

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

Refer to the description for DTC P31FA-372. Refer to DESCRIPTION.

Refer to the description for DTC P31FA-372. Refer to DESCRIPTION.

The SMRs (System Main Relays) are the relays that connect or disconnect the high voltage power system in accordance with commands from the power management control ECU.

There are 3 SMRs and 1 precharge resistor. SMRB, SMRP, SMRG, and the precharge resistor are located in the HV battery junction block assembly in the HV battery pack.

To connect to the high voltage power system, the vehicle will first turn on SMRP and SMRB to charge the vehicle through the system main resistor. Then, SMRP will be turned off after SMRG is turned on. To shut off the high voltage power system, SMRB and SMRG are turned off.

Scheme 501

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

MONITOR DESCRIPTION

The power management control ECU (HV CPU) monitors the PISW signal. The PISW signal indicates the connection status of the electric vehicle charger connector. If the power management control ECU (HV CPU) detects an abnormality in the sensor signal, the power management control ECU (HV CPU) will illuminate the MIL and set a DTC.

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

The power management control ECU (HV CPU) checks for faults in the CCID relay cutout request sent to the electric vehicle charger cable assembly (CCID). If the power management control ECU (HV CPU) detects a malfunction, it will illuminate the MIL and set a DTC.

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

Scheme 502

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

Power management control ECU (HV CPU) monitors the electric vehicle charger voltage sensor signal (AC). If the power management control ECU (HV CPU) detects an abnormality in the sensor signal, the power management control ECU (HV CPU) will illuminate the MIL and set a DTC.

Refer to the description for DTC P316A-844. Refer to DESCRIPTION.

The power management control ECU (HV CPU) monitors the plug-in charging system voltage. If the power management control ECU (HV CPU) detects a malfunction, it will illuminate the MIL and set a DTC.

The power management control ECU (HV CPU) sends a shutdown signal to the inverter with converter assembly (MG ECU) to shut down the power supply to MG2 and MG1.

Scheme 503

Refer to the description for DTC P3232-749. Refer to DESCRIPTION.

The MG ECU located in the inverter with converter assembly monitors its internal operation and it will set DTCs when it detects malfunctions.

The power management control ECU (HV CPU) monitors the boost converter No. 2 current sensor high-resolution circuit. If the power management control ECU (HV CPU) detects a fault, it will illuminate the MIL and set a DTC.

The current of the boost converter No. 2 is controlled using the boost converter No. 2 current sensor (IL). The MG ECU monitors the boost converter No. 2 sensor (IL) for malfunctions and sends a signal to the power management control ECU (HV CPU) to store a DTC if a malfunction is detected.

HINT

The boost converter No. 2 current sensor (IL) is connected to the MG ECU inside the inverter with converter assembly. If P3242-836, P3243-834, P3244-835 is output, replace the inverter with converter assembly.

The MG ECU monitors the boost converter No. 2 current sensor signal. If the MG ECU detects abnormality in the sensor signal, the power management control ECU (HV CPU) will illuminate the MIL and set a DTC.

The current of the boost converter No. 2 is controlled using the boost converter No. 2 current sensor (IL). The MG ECU monitors the boost converter No. 2 sensor (IL) for malfunctions and sends a signal to the power management control ECU (HV CPU) to store a DTC if a malfunction is detected.

HINT

The boost converter No. 2 current sensor (IL) is connected to the MG ECU inside the inverter with converter assembly. If P3242-838 is output, replace the inverter with converter assembly.

The power management control ECU (HV CPU) monitors the boost converter No. 2 current sensor. If the power management control ECU (HV CPU) detects a fault, it will illuminate the MIL and set a DTC.

If the inverter with converter assembly (MG ECU) is reset due to a problem with the power source in the inverter, the power management control ECU (HV CPU) will set this DTC.

Scheme 504

Refer to the description for DTC P31FA-372. Refer to DESCRIPTION.

1. Refer to the description for DTC P31FA-372. Refer to «DESCRIPTION»(ref-393302-S31614833182011040700000).
2. This circuit uses the power management control ECU to monitor the system main relays and stops the system if a malfunction is detected in the relays, because it may be impossible to shut off the high-voltage system if any of the relays becomes stuck.

Refer to the description for DTC P31FA-372. Refer to DESCRIPTION.

Refer to the description for DTC P31FA-372. Refer to DESCRIPTION.

Refer to the description for DTC P332A-366. Refer to DESCRIPTION.

Refer to the description for DTC P332A-366. Refer to DESCRIPTION.

The SMRs (System Main Relays) are the relays that connect or disconnect the high voltage power system in accordance with commands from the power management control ECU.

There are 3 SMRs and 1 precharge resistor. SMRB, SMRP, SMRG, and the precharge resistor are located in the HV battery junction block assembly in the HV battery pack.

To connect to the high voltage power system, the vehicle will first turn on SMRP and SMRB to charge the vehicle through the system main resistor. Then, SMRP will be turned off after SMRG is turned on. To shut off the high voltage power system, SMRB and SMRG are turned off.

Scheme 505

Refer to the description for DTC P332A-366. Refer to DESCRIPTION.

1. Refer to the description for DTC P332A-366. Refer to «DESCRIPTION»(ref-393302-S26362400942011040700000).
2. This circuit uses the power management control ECU to monitor the system main relays and stops the system if a malfunction is detected in the relays, because it may be impossible to shut off the high-voltage system if any of the relays becomes stuck.

Refer to the description for DTC P332A-366. Refer to DESCRIPTION.

Refer to the description for DTC P332A-366. Refer to DESCRIPTION.

1. The power management control ECU (HV CPU) transmits and receives signals via CAN communication to and from the ECM, skid control ECU assembly, power steering ECU assembly, main body ECU, airbag sensor assembly, and air conditioning amplifier assembly.

If the power management control ECU (HV CPU) detect problem with CAN communication with the ECU , it will illuminate the MIL and set a DTC.

1. For a description of the inverter with converter assembly. Refer to «DESCRIPTION»(ref-393437-S17830815192011040700000). The inverter with converter assembly (MG ECU) controls MG2 based on commands from the power management control ECU (HV CPU). The inverter with converter assembly (MG ECU) monitors communication data and detects malfunctions.

Scheme 506

Refer to the description for DTC U0110-159. Refer to DESCRIPTION.

1. The power management control ECU (HV CPU) uses internal communication to transmit and receive signals to and from the HV battery CPU which is also located in the power management control ECU.

If the power management control ECU (HV CPU) detect problem with CAN communication with the ECU , it will illuminate the MIL and set a DTC.

If there is a malfunction in the air conditioning amplifier assembly, DTC U0424-537 will be stored.

The battery smart unit detects the HV battery conditions (voltage, current, and temperature) and the battery cooling fan voltage, and sends the detected signals to the power management control ECU via the serial communication system.

If a malfunction in communication line between the battery smart unit (sub1) and power management control ECU (HV CPU) is detected, the power management control ECU (HV CPU) illuminates the MIL and sets a DTC.

When the auxiliary battery is replaced or the cable is disconnected from its negative (-) battery terminal, the ISC learning value will be initialized and symptoms as a noise from the hybrid vehicle transaxle assembly may occur until ISC learning is performed.

Therefore, perform ISC learning when the auxiliary battery is replaced or the cable is disconnected from the negative (-) terminal of the auxiliary battery.

When selecting power mode, the switch operation signal is sent to the ECM. Following this, the drive torque is optimally controlled to obtain a sporty feel in response to the driver's acceleration operation.

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1. READ VALUE USING TECHSTREAM (CAN BUS CHECK) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: System Select/CAN Bus Check. Result Result Proceed to All of the ECUs and sensors that are currently connected to the CAN communication system are displayed. A None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed. B Turn the power switch off. B --> See step 9 A: Go to next step
2. CHECK DTC OUTPUT (ALL) Connect the Techstream to the DLC3. Turn the power switch on (IG). Check for DTCs of all system by following the prompts on the Techstream screen. RESULT Result Proceed to No DTCs are output A DTCs are output B Turn the power switch off. B --> GO TO DTC CHART A: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (INDICAT. LAMP ECT PWR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Body Electrical/Combination Meter/Active Test/Indicat. Lamp ECT PWR. Perform the "Indicat. Lamp ECT PWR" Active Test. OK The PWR mode indicator lamp comes on (blink). Turn the power switch off. NG --> See step 10 OK: Go to next step
4. READ VALUE USING TECHSTREAM (PATTERN SWITCH (PWR/M)) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain/Hybrid Control/Data List/Pattern Switch (PWR/M). Read the value displayed on the Techstream. Tester Display Condition Normal Condition Pattern Switch (PWR/M) PWR MODE switch operated ON PWR MODE switch not operated OFF Result Result Proceed to The Techstream display changes according to the POWER switch operation. A The Techstream display does not changes according to the POWER switch operation. B Turn the power switch off. B --> See step 5 A --> See step 8
5. CHECK INTEGRATION CONTROL & PANEL SUB-ASSEMBLY (PWR MODE SWITCH) Remove the integration control & panel sub-assembly (PWR MODE switch). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L78-7 (PWR) - L78-5 (E) PWR MODE switch operated Below 1 ohms L78-7 (PWR) - L78-5 (E) PWR MODE switch not operated 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Integration Control & Panel Sub-assembly) Install the integration control & panel sub-assembly. NG --> See step 11 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL & PANEL SUB-ASSEMBLY - BODY GROUND) Disconnect connector L78 from the integration control & panel sub-assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L78-5 (E) - Body ground Power switch off Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Integration Control & Panel Sub-assembly) Connect the integration control & panel sub-assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL & PANEL SUB-ASSEMBLY - ECM) Disconnect connector L78 from the integration control & panel sub-assembly. Disconnect connector A57 from the ECM. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L78-7 (PWR) - A57-46 (PWMS) Power switch off Below 1 ohms L78-7 (PWR) or A57-46 (PWMS) - Body ground Power switch off 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Integration Control & Panel Sub-assembly) *b Front view of wire harness connector (to ECM) Connect the ECM connector. Connect the integration control & panel sub-assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-393304-S38066871252011040700000)
9. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-393431-S28801007332011040700000)
10. REPLACE COMBINATION METER ASSEMBLY. Refer to «COMPONENTS»(ref-393432-S31142341732011040700000)
11. REPLACE INTEGRATION CONTROL & PANEL SUB-ASSEMBLY. Refer to «COMPONENTS»(ref-393447-S07301943952011040700000)
12. REPLACE ECM. Refer to «COMPONENTS»(ref-393423-S12583475832011040700000)

When selecting ECO mode, the switch operation signal is sent to the air conditioning amplifier assembly. Following this, ECO mode control is activated for the heater and air conditioning system.

Scheme 511

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Scheme 514

1. READ VALUE USING TECHSTREAM (CAN BUS CHECK) See step 1 B --> See step 9 A: Go to next step
2. CHECK DTC OUTPUT (ALL) See step 2 B --> GO TO DTC CHART A: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (INDICAT. ECO MODE) Connect the Techstream to the DLC3. Turn the power switch on (READY). Enter the following menus: Body Electrical/Combination Meter/Active Test/Indicat. ECO MODE. Perform the "Indicat. ECO MODE" Active Test. OK The ECO MODE indicator lamp comes on (blink). Turn the power switch off. NG --> See step 10 OK: Go to next step
4. READ VALUE USING TECHSTREAM (ECO SWITCH) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Body Electrical/Air Conditioning/Data List/ECO Switch. Read the value displayed on the Techstream. Tester Display Condition Normal Condition ECO Switch ECO MODE switch operated ON ECO MODE switch not operated OFF Result Result Proceed to The Techstream display changes according to the ECO mode switch operation. A The Techstream display does not change according to the ECO mode switch operation. B Turn the power switch off. NG --> See step 5 OK --> See step 8
5. CHECK INTEGRATION CONTROL & PANEL SUB-ASSEMBLY (ECO MODE SWITCH) Remove the integration control & panel sub-assembly (ECO mode switch). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L78-2 (ECU) - L78-5 (E) ECO MODE switch operated Below 1 ohms L78-2 (ECU) - L78-5 (E) ECO MODE switch not operated 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Integration Control & Panel Sub-assembly) Install the integration control & panel sub-assembly. NG --> See step 11 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL & PANEL SUB-ASSEMBLY - BODY GROUND) Disconnect connector L78 from the integration control & panel sub-assembly (ECO mode switch). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L78-5 (E) - Body ground Power switch off Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Integration Control & Panel Sub-assembly) Connect the integration control & panel sub-assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (ECO SWITCH - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect connector L78 from the integration control & panel sub-assembly (ECO switch). Disconnect connector L113 from the air conditioning amplifier assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L78-2 (ECU) - L113-15 (ECOS) Power switch off Below 1 ohms L78-2 (ECU) or L113-15 (ECOS) - Body ground Power switch off 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Integration Control & Panel Sub-assembly) *b Rear view of wire harness connector (to Air Conditioning Amplifier Assembly) Connect the air conditioning amplifier assembly connector. Connect the integration control & panel sub-assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-393304-S38066871252011040700000)
9. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-393431-S28801007332011040700000)
10. REPLACE COMBINATION METER ASSEMBLY. Refer to «COMPONENTS»(ref-393432-S31142341732011040700000)
11. REPLACE INTEGRATION CONTROL & PANEL SUB-ASSEMBLY. Refer to «COMPONENTS»(ref-393447-S07301943952011040700000)
12. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «COMPONENTS»(/toyota/prius/iii-2009-2011/remont/automatic-hvac-system/#air-conditioning-service-information-phv)

The power management control ECU (HV CPU) illuminates the indicator assembly to show the plug-in charging status. When charging completes normally, the power management control ECU (HV CPU) turns off the indicator assembly. If an abnormality occurs during charging, the power management control ECU (HV CPU) blinks the indicator assembly.

Scheme 515

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1. CHECK DTC OUTPUT (ALL) Connect the Techstream to the DLC3. Turn the power switch on (IG). Check for DTCs of all system by following the prompts on the Techstream screen. Result Result Proceed to No DTCs are output. A DTCs are output. B Turn the power switch off. B --> GO TO DTC CHART A: Go to next step
2. READ VALUE USING TECHSTREAM (CHG INDICAT LIGHT STATUS) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain/Hybrid Control/Data List/Chg Indicat Light Status. Read the value displayed on the Techstream. Tester Display Measurement Item/Range Normal Condition Chg Indicat Light Status Charge indicator condition/ ON, OFF or Fast Blink ON: During plug-in charging OFF: Charge cable not connected or normal completion of plug-in charging Fast Blink: Abnormality during plug-in charging OK The indicator assembly operates in accordance with the Data List. Turn the power switch off. NG --> See step 3 OK --> See step 8
3. INSPECT INDICATOR ASSEMBLY Remove the indicator assembly. Inspect the indicator assembly. Standard Tester Connection Switch Condition Specified Condition I7-2 (ACT+) - I7-1 (E) When the auxiliary battery positive terminal and indicator assembly terminal ACT+, and the auxiliary battery negative terminal and terminal E are connected Illuminates I7-2 (ACT+) - I7-1 (E) When the auxiliary battery positive terminal and indicator assembly terminal ACT+, and the auxiliary battery negative terminal and terminal E are not connected Does not illuminate TEXT IN ILLUSTRATION *a Component without harness connected (Indicator Assembly) Install the indicator assembly. NG --> See step 6 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (INDICATOR ASSEMBLY - BODY GROUND) Disconnect the indicator assembly connector Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition I7-1 (E) - Body ground Power switch off Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Indicator Assembly) Connect the indicator assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INDICATOR ASSEMBLY) Disconnect connector L116 from the power management control ECU. Disconnect the indicator assembly connector Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L116-9 (PIL) - I7-2 (ACT+) Power switch off Below 1 ohms L116-9 (PIL) or I7-2 (ACT+) - Body ground Power switch off 10 kohms or higher TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) *b Front view of wire harness connector (to Indicator Assembly) Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L116-9 (PIL) or I7-2 (ACT+) - Body ground Power switch on (IG) Below 1 V Turn the power switch off. Connect the power management control ECU connector. Connect the indicator assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
6. REPLACE INDICATOR ASSEMBLY. Refer to «COMPONENTS»(ref-393418-S16243772242011040700000)
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «COMPONENTS»(/toyota/prius/iii-2009-2011/remont/body-electrical/#power-distribution-service-information-phv)
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-393304-S38066871252011040700000)

When the power management control ECU (HV CPU) receives the CPLT signal from the electric vehicle charger assembly, the power source control ECU closes the IGCT relay to enable the plug-in HV system. Also, the power management control ECU (HV CPU) judges the charge voltage status received from the electric vehicle charger cable assembly and prepares for charging.

Scheme 519

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1. CHECK DTC OUTPUT (ALL) Connect the Techstream to the DLC3. Turn the power switch on (IG). Check for DTCs of all system by following the prompts on the Techstream screen. Result Result Proceed to No DTCs are output. A DTCs are output. B Turn the power switch off. B --> GO TO DTC CHART A: Go to next step
2. REPLACE ELECTRIC VEHICLE CHARGER CABLE ASSEMBLY (INSPECTION BY REPLACEMENT) Replace the electric vehicle charger cable assembly with a known good one. NEXT: Go to next step
3. CHECK INDICATOR ASSEMBLY Connect the electric vehicle charger cable assembly to an outlet (AC). Connect the charge connector of the electric vehicle charger cable assembly to the charge inlet of the vehicle. Check if the charge indicator light comes on. OK The charge indicator light comes on. NG --> See step 5 OK: Go to next step
4. READ VALUE USING TECHSTREAM (BAT NO. 1, NO. 2, NO. 3 STATE OF CHRGE) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain/Hybrid Control/Data List/Bat No. 1 State of Charge, Bat No. 2 State of Charge, Bat No. 3 State of Charge. Read the Data List. OK The SOC of one of the Data List items increases. Turn the power switch off. NG --> See step 9 OK --> REPLACE ELECTRIC VEHICLE CHARGER CABLE ASSEMBLY
5. INSPECT INDICATOR ASSEMBLY See step 3 NG --> See step 13 OK: Go to next step
6. READ VALUE USING TECHSTREAM (CPLT OUTPUT VOLTAGE) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain/Hybrid Control/Data List/CPLT Output Voltage. Read the Data List. OK Tester Display Condition Specified Condition CPLT Output Voltage Power switch on (IG) Charge cable not connected 12 V Power switch on (IG) Charge cable connected (during charging preparation) 9 V Power switch on (IG) Charge cable connected (when charging preparation completed) 6 V Turn the power switch off. NG --> See step 12 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (INDICATOR ASSEMBLY - BODY GROUND) See step 4 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INDICATOR ASSEMBLY) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
9. READ VALUE USING TECHSTREAM (CPLT OUTPUT VOLTAGE) Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain/Hybrid Control/Data List/CPLT Output Voltage. Read the Data List. OK Tester Display Condition Specified Condition CPLT Output Voltage Power switch on (IG) Charge cable not connected 12 V Power switch on (IG) Charge cable connected (during charging preparation) 9 V Power switch on (IG) Charge cable connected (when charging preparation completed) 6 V Turn the power switch off. NG --> See step 12 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - CHARGE INLET) Disconnect connector A22 from the power management control ECU. Open the lid of charge inlet. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Switch Condition Specified Condition A22-23(CPLT) - t1-4(CPLT) Power switch off Below 1 ohms A22-10(CPG) - t1-3(GND) or Body ground Power switch off Below 1 ohms Standard Resistance (Check for Short) Tester Connection Switch Condition Specified Condition A22-23(CPLT) or t1-4(CPLT) - Body ground and other terminals Power switch off 10 kohms or higher A22-10(CPG) or t1-3(GND) - Other terminals Power switch off 10 kohms or higher TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) *b Front view of wire harness connector (Charge Inlet) Close the lid of charge inlet. Connect the power management control ECU connector. NG --> See step 11 OK --> REPLACE ELECTRIC VEHICLE CHARGER CABLE ASSEMBLY
11. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - EV CHARGER CABLE) Disconnect connector A22 from the power management control ECU. Disconnect connector At1 from the electric vehicle charger cable. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Switch Condition Specified Condition A22-23(CPLT) - At1-1(CPLT) Power switch off Below 1 ohms A22-10(CPG) - At1-3(CPG) Power switch off Below 1 ohms Standard Resistance (Check for Short) Tester Connection Switch Condition Specified Condition A22-23(CPLT) or At1-1(CPLT) - Body ground and other terminals Power switch off 10 kohms or higher A22-10(CPG) or At1-3(CPG) - Body ground and other terminals Power switch off 10 kohms or higher TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) *b Front view of wire harness connector (to Electric Vehicle Charger Cable) Connect the electric vehicle charger cable connector. Connect the power management control ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «COMPONENTS»(/toyota/prius/iii-2009-2011/remont/body-electrical/#power-distribution-service-information-phv)
13. REPLACE INDICATOR ASSEMBLY. Refer to «COMPONENTS»(ref-393418-S16243772242011040700000)
14. REPLACE ELECTRIC VEHICLE CHARGER CABLE. Refer to «COMPONENTS»(ref-393418-S19861397032011040700000)

See also:
• COMPONENTS
• COMPONENTS