Smart Key System (for Start Function) (diagnostic Codes & Symptom Tests) Toyota Prius V I

DESCRIPTION

This DTC is stored when a malfunction in the IG1 drive circuit, IG2 drive circuit or IG hold circuit in the power management control ECU is detected.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

1. *: Only output while a malfunction is present and the power switch is on (IG)

HINT

1. The IG1 and IG2 drive circuits activate the IG1 and IG2 relays.
2. After the IG1 and IG2 drive circuits turn on, even if the power management control ECU operates incorrectly, the IG hold circuit maintains the power switch on (IG) state.

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Scheme 22

INSPECTION PROCEDURE

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

Scheme 23

Scheme 24

Scheme 25

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) Disconnect the L5 and L6 connectors from the power management control ECU. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L5-1 (AM22) - Body ground Always 9.5 to 16 V L6-7 (AM21) - Body ground Always 9.5 to 16 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L5-5 (E01) - Body ground Always Below 1 ohms L5-6 (E1) - Body ground Always Below 1 ohms L6-4 (E12) - Body ground Always Below 1 ohms L6-5 (E02) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT NO. 2 INTEGRATION RELAY (IG2 RELAY) Remove the No. 2 integration relay. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/testing-diagnostics/#engine-control-system-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-2 - 1A-3 20°C (68°F) 130 to 230 ohms TEXT IN ILLUSTRATION *a Component without harness connected (No. 2 Integration Relay) NG --> See step 10 OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2 AND IG1 NO. 3 RELAYS) Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-25 - 2B-4 20°C (68°F) 54.32 to 79.32 ohms 2B-25 - 2B-6 20°C (68°F) 54.32 to 79.32 ohms 2B-4 - 2B-6 Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 11 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L6-2 (IG1D) - 2B-25 Always Below 1 ohms L6-2 (IG1D) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-4 - Body ground Always Below 1 ohms 2B-6 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A22-2 (IG2D) - 1A-2 Always Below 1 ohms A22-2 (IG2D) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-3 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU Install the instrument panel junction block assembly. Install the No. 2 integration relay. Reconnect the A22 and L6 connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A22-2 (IG2D) - Body ground Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more L6-2 (IG1D) - Body ground Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) NG --> See step 12 OK --> See step 13
10. REPLACE NO. 2 INTEGRATION RELAY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/testing-diagnostics/#engine-control-system-service-information)
11. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
13. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

This DTC is stored when there is a problem in the ACC output circuit. The ACC circuit is the circuit that goes from inside the power management control ECU to the ACC relay.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

This DTC is stored when a malfunction in the ACC output circuit between the ACC output terminal of the power management control ECU and the ACC relay is detected.

1. *: Only output while a malfunction is present and the power switch is on (IG)

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Scheme 26

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. When the power source mode cannot change to on (ACC), the audio and navigation systems do not operate. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

Scheme 27

Scheme 28

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2A-43 - 2B-4 20°C (68°F) 81.49 to 118.98 ohms 2A-43 - 2B-6 20°C (68°F) 81.49 to 118.98 ohms 2B-4 - 2B-6 Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 7 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L6-1 (ACCD) - 2A-43 Always Below 1 ohms L6-1 (ACCD) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-4 - Body ground Always Below 1 ohms 2B-6 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT POWER MANAGEMENT CONTROL ECU Reinstall the instrument panel junction block assembly. Reconnect the L5 and L6 connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L6-1 (ACCD) - Body ground Power switch on (ACC) Output voltage at terminal AM21 or AM22 is -2 V or more TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) NG --> See step 8 OK --> See step 9
7. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

This DTC is stored when a malfunction is detected in the starter circuit inside the power management control ECU.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

Scheme 29

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . Turn the power switch on (IG). After 25 seconds have elapsed, check if the DTC has been set again. OK DTC B2275 is not output. NG --> See step 4 OK --> See step 5
4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)
5. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)

This DTC is stored when a malfunction in the water submersion detection circuit in the power management control ECU is detected.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

1. *: Only output while a malfunction is present and the power switch is on (IG)

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

HINT

Before proceeding with troubleshooting, check if there are any signs of water damage to the power management control ECU. If there are any signs of water damage, replace the power management control ECU and take measures against the cause of the water damage.

1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . Turn the power switch on (IG). After 330 seconds have elapsed, check if the DTC has been set again. OK DTC B2277 is not output HINT: If there are any signs that water was present, before replacing the power management control ECU, take measures to prevent any further water entry. NG --> See step 2 OK --> See step 3
2. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

This DTC is stored when a mismatch between the vehicle speed signal from the direct line sent by the combination meter sub-assembly and the vehicle speed signal sent via CAN communication is detected.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

1. *: Only output while a malfunction is present and the power switch is on (IG)

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Scheme 30

HINT

1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter sub-assembly. The signal is changed to a pulse signal at the transistor in the combination meter sub-assembly. Each ECU controls the respective system based on the pulse signal.
2. If a short occurs in an ECU, all systems in the diagram above will not operate normally.

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

Scheme 31

1. CHECK CAN COMMUNICATION SYSTEM Check if CAN communication DTCs are output. HINT: If any DTCs for the CAN communication system are output, inspect those DTCs first. OK CAN communication DTC is not output. NG --> See step 10 OK: Go to next step
2. CHECK SPEEDOMETER OPERATION Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Combination Meter / Data List. Check the Data List for proper functioning of the vehicle speed signal. COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed / Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Almost the same as actual vehicle speed - OK Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer). NG --> See step 11 OK: Go to next step
3. READ VALUE USING TECHSTREAM Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle speed signal Vehicle moving or stationary/Stop or Run Stop: Vehicle stopped Run: Vehicle moving at 5 km/h (3 mph) or more - OK Stop (vehicle is stopped) and Run (vehicle is running) appear on the screen. NG --> See step 4 OK --> See step 12
4. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (COMBINATION METER SUB-ASSEMBLY - POWER MANAGEMENT CONTROL ECU) Disconnect the L27 connector from the combination meter sub-assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L5-14 (SPDI) - L27-15 (+S) Always Below 1 ohms L5-14 (SPDI) - Body ground Always 10 kohms or higher NG --> See step 8 OK: Go to next step
7. INSPECT COMBINATION METER SUB-ASSEMBLY Remove the combination meter sub-assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/gauges-instrument-panels/#meter-gauge-display-service-information). Reconnect the L27 connector to the combination meter sub-assembly. Reconnect the L5 connector to the power management control ECU. Connect an oscilloscope to terminal L27-15 (+S) and body ground. Turn the power switch on (IG). Turn a wheel slowly. Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 5 V/DIV., 20 ms./DIV. Vehicle condition Driving at approx. 20 km/h (12 mph) OK The waveform is similar to that shown in the illustration above (Scheme 31). TEXT IN ILLUSTRATION *a Component with harness connected (Combination Meter Sub-assembly) HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. NG --> See step 13 OK --> See step 14
8. CHECK HARNESS AND CONNECTOR (COMBINATION METER SUB-ASSEMBLY - JUNCTION CONNECTOR) Disconnect the L70 connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L27-15 (+S) - L70-59 Always Below 1 ohms L27-15 (+S) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - JUNCTION BLOCK) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L5-14 (SPDI) - L70-22 Always Below 1 ohms L5-14 (SPDI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE JUNCTION CONNECTOR
10. GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/communication-devices/#can-communication-system-diagnostics-introduction__diagnostic-trouble-code-chart)
11. GO TO METER / GAUGE SYSTEM (Speedometer Malfunction). Refer to «Speedometer Malfunction»(/toyota/prius-v/i-2011-2014/remont/gauges-instrument-panels/#meter-gauge-system-diagnostic-codes-symptom-tests)
12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
13. GO TO METER / GAUGE SYSTEM (Speed Signal Circuit). Refer to «Speed Signal Circuit»(/toyota/prius-v/i-2011-2014/remont/gauges-instrument-panels/#meter-gauge-system-diagnostic-codes-symptom-tests)
14. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)

The power management control ECU receives brake signal information from 2 sources. It receives a signal from the stop light switch assembly via a direct line, and a signal from the skid control ECU assembly via CAN communication. If the information from these 2 sources is inconsistent, this DTC will be stored.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

This DTC is stored when a mismatch between the brake signal from the direct line and the brake signal sent via CAN communication is detected.

1. *: Only output while a malfunction is present and the power switch is on (IG)

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Scheme 32

HINT

Check the connector connection to the terminal to make sure that there is no abnormality such as a loose connection, deformation, etc.

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

Scheme 33

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/exterior-lights/#lighting-system-exterior-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 Pushed 10 kohms or higher 3 - 4 Pushed Below 1 ohms 1 - 2 Not pushed Below 1 ohms 3 - 4 Not pushed 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Stop Light Switch Assembly) *b Free *c Pushed in NG --> See step 6 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER MANAGEMENT CONTROL ECU) Disconnect the A22 connector from the power management control ECU. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A22-23 (STP) - A26-1 Always Below 1 ohms A22-23 (STP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH ASSEMBLY) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Specified Condition Stop Light Switch1 State of brake pedal/OFF or ON OFF: Brake pedal released ON: Brake pedal depressed Use this item to determine whether the stop light switch is malfunctioning. The hybrid control system cannot be started when this item is "OFF". When this item is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time. OK ON (brake pedal is depressed) and OFF (brake pedal is released) appear on the screen. NG --> See step 7 OK --> See step 8
6. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/exterior-lights/#lighting-system-exterior-service-information)
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
8. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DTC C1249/49). Refer to «DTC C1249/49: Open in Stop Light Switch Circuit»(/toyota/prius-v/i-2011-2014/remont/anti-locktraction-control/#electronically-controlled-brake-system-diagnostic-codes-symptom-tests)

This DTC is stored when a malfunction is detected in the READY signal circuit inside the power management control ECU.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

Scheme 34

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

HINT

Check the connector connection to the terminal to make sure that there is no abnormality such as a loose connection, deformation, etc.

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . Turn the power switch on (READY). After 25 seconds have elapsed, check if the DTC has been set again. OK DTC B2286 is not output NG --> See step 4 OK --> See step 5
4. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

This DTC is stored when the power management control ECU detects a CAN communication error inside the power management control ECU (power control section - HV control section).

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

Scheme 35

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__dtc-check-clear) . Check for DTCs again. OK DTC U0293 is not output NG --> See step 4 OK --> See step 5
4. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

When the key is in the vehicle and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode.

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

Scheme 36

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart. Refer to DTC CHECK / CLEAR . The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After completing repairs, confirm that the problem does not occur.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

Scheme 37

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. READ VALUE USING TECHSTREAM Reconnect the H3 and H4 connectors to the power management control ECU. Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Key Certif Wait T-Out Key verification malfunction/No or Yes No: Verification normal Yes: Verification error (detected when ID code from key and ID stored in certification ECU (smart key ECU assembly) do not match) The hybrid control system can be started, even if this item displays "Yes". OK When more than 1 second elapses after the power switch is turned from off to on (IG), No is displayed in the Data List. NG --> See step 9 OK: Go to next step
4. READ VALUE USING TECHSTREAM Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Condition of power switch contact 1/OFF or ON OFF: Power switch not pressed ON: Power switch pressed If the power switch is pressed for a short time, the display may not change. Use this item to determine whether the power switch input signal is malfunctioning. Start Switch2 Condition of power switch contact 2/OFF or ON OFF: Power switch not pressed ON: Power switch pressed This is the backup for power switch 1. Behaves the same way as power switch 1. OK ON (power switch is pushed) and OFF (power switch is not pushed) appear on the screen. NG --> See step 7 OK: Go to next step
5. CHECK POWER MANAGEMENT CONTROL ECU Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Power Supply Condition State of power supply/All OFF, ACC ON, IG1 ON, IG2 ON, ST ON All OFF: Power switch off (power supply off) ACC ON: Power switch on (ACC) (ACC relay on) IG1 ON: Power switch on (IG) (IG1 relay on) IG2 ON: Power switch on (IG) (IG2 relay on) ST ON: Starting hybrid control system Since "IG1 ON" and "IG2 ON" turn "on" at approximately the same time, "IG1 ON" may not be displayed ("IG1 ON" turns on for a very short time). Measure the voltage while checking the Data List on the Techstream. Standard Voltage Tester Connection Condition Specified Condition L6-2 (IG1D) - Body ground Power switch off Below 1 V L6-2 (IG1D) - Body ground Power switch on (ACC) Below 1 V L6-2 (IG1D) - Body ground Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more A22-2 (IG2D) - Body ground Power switch off Below 1 V A22-2 (IG2D) - Body ground Power switch on (ACC) Below 1 V A22-2 (IG2D) - Body ground Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more L6-1 (ACCD) - Body ground Power switch off Below 1 V L6-1 (ACCD) - Body ground Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more L6-1 (ACCD) - Body ground Power switch on (ACC) Output voltage at terminal AM21 or AM22 is -2 V or more NG --> See step 10 OK: Go to next step
6. CONFIRMATION TEST Check that the power source mode becomes on (ACC) and on (IG) when the power switch is operated. OK Power source mode becomes on (ACC) and on (IG) when the power switch is operated. NG --> CHECK RELAY CONTACT SIDE CIRCUIT OK --> See step 11
7. CHECK POWER SWITCH Remove the power switch. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/starter/#starting-system-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition L43-7 (SS1) - L43-5 (GND) Pushed Below 1 ohms L43-7 (SS1) - L43-5 (GND) Not pushed 10 kohms or higher L43-2 (SS2) - L43-5 (GND) Pushed Below 1 ohms L43-2 (SS2) - L43-5 (GND) Not pushed 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Power Switch) NG --> See step 12 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (POWER SWITCH - POWER MANAGEMENT CONTROL ECU AND BODY GROUND) Disconnect the L5 and L6 connectors from the power management control ECU. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L6-17 (SSW2) - L43-2 (SS2) Always Below 1 ohms L5-7 (SSW1) - L43-7 (SS1) Always Below 1 ohms L6-17 (SSW2) - Body ground Always 10 kohms or higher L5-7 (SSW1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
9. CHECK FOR DTC Enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. Check for DTCs. Result Result Proceed to The following DTCs are not output: B2785 B2287 B2784 A DTC B2785 is not output but DTC B2287 is output. B DTCs other than B2287 are output. C B --> See step 14 C --> GO TO DIAGNOSTIC TROUBLE CODE CHART A --> See step 15
10. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
11. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)
12. REPLACE POWER SWITCH. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/starter/#starting-system-service-information)
13. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
14. GO TO OTHER FLOW CHART (DTC B2287). Refer to «DTC B2287: LIN Communication Master Malfunction»(/toyota/prius-v/i-2011-2014/remont/communication-devices/#lin-communication-system-diagnostic-codes)
15. GO TO OTHER FLOW CHART (Room Oscillator does not Recognize Key). Refer to «Room Oscillator does not Recognize Key»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#smart-key-system-for-entry-function-diagnostic-codes-symptom-tests)

When the power switch is pushed with the key in the cabin, the power management control ECU receives signals to switch the power source mode.

Use this troubleshooting procedure when the power source mode does not change to on (IG) but does change to on (ACC).

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

WIRING DIAGRAM

Refer to DTC B2271. Refer to DTC B2271: Ignition Hold Monitor Malfunction .

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART . The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After completing repairs, confirm that the problem does not occur.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT NO. 2 INTEGRATION RELAY (IG2 RELAY) See step 3 NG --> See step 10 OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2 AND IG1 NO. 3 RELAY) See step 4 NG --> See step 11 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) See step 7 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK ASSEMBLY - BODY GROUND) See step 8 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU See step 9 NG --> See step 12 OK --> See step 13
10. REPLACE NO. 2 INTEGRATION RELAY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/testing-diagnostics/#engine-control-system-service-information)
11. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
13. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

When the key is in the vehicle and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode.

Use this troubleshooting procedure when the power source mode does not change to on (ACC) but does change to on (IG).

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

Refer to DTC B2274. Refer to DTC B2274: ACC Monitor Malfunction .

Note. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART . The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS . Inspect the fuses for circuits related to this system before performing the following inspection procedure. After completing repairs, confirm that the problem does not occur.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY See step 3 NG --> See step 7 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) See step 4 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT POWER MANAGEMENT CONTROL ECU See step 6 NG --> See step 8 OK --> See step 9
7. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction)

When the electronic key is in the cabin and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode. In addition, when the power switch is pressed with park (P) selected and the brake pedal depressed, the hybrid system turns on (READY).

HINT

1. When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
2. When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.

Scheme 38

Scheme 39

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: for Hybrid Control: Powertrain / Hybrid Control / Trouble Codes. for Power Source Control: Body Electrical / Power Source Control / Trouble Codes. for Smart Key: Body Electrical / Smart Key / Trouble Codes. The smart key system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . If the smart key system is disabled through the customize function, enable the system before performing troubleshooting. Refer to CUSTOMIZE PARAMETERS . Inspect the fuses of circuits related to this system before performing the following inspection procedure. When replacing the certification ECU (smart key ECU assembly) or ID code box, registration must be performed. Refer to REGISTRATION . After completing repairs, confirm that the problem does not occur.

HINT

RELATED DATA LIST AND ACTIVE TEST ITEMS

Scheme 40

Scheme 41

Scheme 42

1. CHECK HYBRID SYSTEM READY ON Place the electrical key transmitter sub-assembly (key) on the driver seat. Depress the brake pedal. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY). OK Power source mode becomes on (READY). NG --> See step 2 OK --> END (HYBRID SYSTEM PERMISSION CONDITIONS WERE NOT SATISFIED)
2. CHECK FOR DTC Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes. Check for DTCs. Result Result Proceed to DTC is not output A Hybrid control system DTC is output B Smart key system (for start function) DTC is output C B --> See step 17 C --> See step 3 A: Go to next step
3. GO TO SMART KEY SYSTEM (for Start Function). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__diagnostic-trouble-code-chart)
4. CHECK POWER SOURCE CONDITION Check the power source mode change. When the key is inside the vehicle and the park (P) is selected, check that pressing the power switch causes the power source mode to change. Result Result Proceed to off --> on (ACC) --> on (IG) --> off A Power source mode does not change to on (IG and ACC) B Power source mode does not change to on (IG) C Power source mode does not change to on (ACC) D B --> See step 19 C --> See step 20 D --> See step 21 A: Go to next step
5. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH ASSEMBLY) Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light Switch1 State of brake pedal/OFF or ON OFF: Brake pedal released ON: Brake pedal depressed Use this item to determine whether the stop light switch is malfunctioning. The hybrid control system cannot be started when this item is "OFF". When this item is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time. OK ON (brake pedal is depressed) and OFF (brake pedal is released) appear on the screen. NG --> See step 11 OK: Go to next step
6. READ VALUE USING TECHSTREAM (L CODE) Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check Verification result between ID code box and transmission control ECU assembly/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the ID code box or transmission control ECU assembly is not registered or the ID code box or transmission control ECU assembly is malfunctioning. The gearshift control cannot be locked. The gearshift control cannot be unlocked (the hybrid control system cannot be started). OK OK appears on the screen. NG --> See step 13 OK: Go to next step
7. READ VALUE USING TECHSTREAM (ENGINE START REQUEST) Read the Data List according to the display on the Techstream. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Start Request Reception state of hybrid control system start permission signal determined by ID code box and sent to certification ECU (smart key ECU assembly)/OK or NG OK: Receiving signal NG: Not receiving signal When this item displays "OK", the certification ECU (smart key ECU assembly) has received engine start request signal from the ID code box and has permitted hybrid control system start. The hybrid control system cannot be started when this item displays "NG". OK OK appears on the screen. NG --> See step 13 OK: Go to next step
8. READ VALUE USING TECHSTREAM (S CODE) Read the Data List according to the display on the Techstream. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box/OK or NG OK: Verification result normal NG: Verification result abnormal When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box is not registered or the certification ECU (smart key ECU assembly) or ID code box is malfunctioning. The gearshift control cannot be locked. The gearshift control cannot be unlocked (the hybrid control system cannot be started). OK OK appears on the screen. NG --> See step 15 OK: Go to next step
9. CHECK ID CODE BOX (IMMOBILISER CODE ECU) Measure the voltage according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) Waveform 1 TEXT IN ILLUSTRATION *a Approximately 160 ms *b Approximately 510 ms MEASUREMENT CONDITION Item Content Tester Connection L6-20 (IMO) - L5-6 (E1) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected Waveform 2 TEXT IN ILLUSTRATION *a Approximately 160 ms *b Approximately 510 ms MEASUREMENT CONDITION Item Content Tester Connection L6-21 (IMI) - L5-6 (E1) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Power switch on (IG) OK The waveform is displayed as shown in illustration above (Scheme 42). NG --> See step 22 OK: Go to next step
10. READ VALUE USING TECHSTREAM Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List according to the display on the Techstream. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Starter Request Signal Condition of hybrid control system start command signal/OFF or ON OFF: Power switch released after approximately 1 second elapses ON: Power switch pressed and held while carrying key with park (P) selected and brake pedal depressed This item displays "ON" when starting the hybrid control system. The hybrid control system cannot be started when this item is "OFF". OK Data List display changes when the power switch is operated. NG --> See step 23 OK --> See step 24
11. INSPECT STOP LIGHT SWITCH ASSEMBLY See step 3 NG --> See step 25 OK: Go to next step
12. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) Disconnect the A22 connector from the power management control ECU. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A22-23 (STP) - A26-1 Always Below 1 ohms A22-23 (STP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 26
13. REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Replace transmission control ECU assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/automatic-trans/#hybrid-transaxle-service-information). NEXT: Go to next step
14. CHECK HYBRID SYSTEM READY ON Place the electrical key transmitter sub-assembly (key) on the driver seat. Depress the brake pedal. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY). OK Power source mode becomes on (READY). NG --> See step 27 OK --> END (TRANSMISSION CONTROL ECU ASSEMBLY WAS DEFECTIVE)
15. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Replace the certification ECU (smart key ECU assembly). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#theft-deterrent-system-keyless-entry-system-service-information). NEXT: Go to next step
16. CHECK HYBRID SYSTEM READY ON Place the electrical key transmitter sub-assembly (key) on the driver seat. Depress the brake pedal. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY). OK Power source mode becomes on (READY). NG --> See step 28 OK --> See step 18
17. GO TO HYBRID CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction__how-to-proceed-with-troubleshooting)
18. END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostics-introduction__diagnostic-trouble-code-chart)
19. GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (IG and ACC)). Refer to «Power Source Mode does not Change to ON (IG and ACC)»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostic-codes-symptom-tests)
20. GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (IG)). Refer to «Power Source Mode does not Change to ON (IG)»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostic-codes-symptom-tests)
21. GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (ACC)). Refer to «Power Source Mode does not Change to ON (ACC)»(/toyota/prius-v/i-2011-2014/remont/starter/#smart-key-system-for-start-function-diagnostic-codes-symptom-tests)
22. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#theft-deterrent-system-keyless-entry-system-service-information)
23. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
24. GO TO HYBRID CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction__how-to-proceed-with-troubleshooting)
25. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/exterior-lights/#lighting-system-exterior-service-information)
26. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
27. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#theft-deterrent-system-keyless-entry-system-service-information)
28. REPLACE ID CODE BOX (IMMOBILISER CODE ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#theft-deterrent-system-keyless-entry-system-service-information)

See also:
• HOW TO PROCEED WITH TROUBLESHOOTING
• REMOVAL
• REMOVAL
• HOW TO PROCEED WITH TROUBLESHOOTING
• DTC CHECK / CLEAR
• REMOVAL
• DIAGNOSTIC TROUBLE CODE CHART
• Speedometer Malfunction
• REMOVAL
• DTC C1249/49: Open in Stop Light Switch Circuit
• CUSTOMIZE PARAMETERS
• REMOVAL
• DTC B2287: LIN Communication Master Malfunction
• Room Oscillator does not Recognize Key
• DIAGNOSTIC TROUBLE CODE CHART
• REGISTRATION
• REMOVAL
• REMOVAL
• HOW TO PROCEED WITH TROUBLESHOOTING
• DTC B2271: Ignition Hold Monitor Malfunction