Smart Key System (start Function) (diagnostic Codes & Circuit Tests) (except Phv) Toyota Prius PHV pre-III

Scheme 19

1. CHECK POWER SOURCE MODE CHANGE FUNCTION Check the function of the power switch. Check that power source mode changes in accordance with the conditions of the shift position and brake pedal. Brake Pedal Shift Lever Power Source Mode Pattern Depressed P When the power switch is pushed once. off --> on (READY) Not depressed P Each time the power switch is pushed. off --> on (ACC) --> on (IG) --> off Except P Each time the power switch is pushed. on (ACC) --> on (IG) --> off - P When the power switch is pushed in the on (READY) condition. on (READY) --> off - Except P When the power switch is pushed in the on (READY) condition. on (READY) --> off Check that the power source mode changes without pressing the power switch. With power source mode on (ACC) or on (IG) and with park (P) selected, wait for at least 1 hour. Check that the power source mode changes from on (ACC) or on (IG) to off automatically.
2. CHECK INDICATOR CONDITION Check the indicator light on the power switch. Check that the power switch indicator turns on and changes color according to the table below. Power Source Mode/Condition Indicator Light Condition Brake Pedal Released Brake Pedal Depressed, Park (P) selected off off Turns on (Green) on (ACC, IG) Turns on (Amber) Turns on (Green) on (READY) off off System malfunction Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec.

DESCRIPTION

This DTC is stored when a problem such as an open in the AM2 fuse, an open or short in the wire harness between the fuse and power management control ECU, a short in the IG output circuit inside the power management control ECU, a short between the power management control ECU and relay, or a short in the relay is detected.

Scheme 20

INSPECTION PROCEDURE

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 21

Scheme 22

Scheme 23

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 (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. INSPECT IG2 RELAY Remove the engine room relay block assembly. 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 *1 Component without harness connected (Engine Room Relay Block) NG --> REPLACE IG2 RELAY 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. 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) 52.32 to 79.32 ohms 2B-25 - 2B-6 20°C (68°F) 52.32 to 79.32 ohms 2B-4 - 2B-6 Always Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 10 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL J/B) 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 (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 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 (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY 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 (ENGINE ROOM RELAY BLOCK ASSEMBLY - BODY GROUND) OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU Install the instrument panel junction block assembly. Install the engine room relay block. 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 -2.5 V or more L6-2 (IG1D) - Body ground Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2.5 V or more TEXT IN ILLUSTRATION *1 Component with harness connected (Power Management Control ECU) NG --> See step 11 OK --> See step 12
10. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
11. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
12. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

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.

Scheme 24

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 25

Scheme 26

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. 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 *1 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 J/B) 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 (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 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 -2.5 V or more TEXT IN ILLUSTRATION *1 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-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

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

Scheme 27

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes the on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__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-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)
5. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)

This DTC is stored when the submersion circuit monitor inside the power management control ECU detects a large amount of water.

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored.

1. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__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-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

The power management control ECU receives vehicle speed information using 2 methods. It receives a speed signal from the meter ECU via a direct line, and a from the skid control ECU via CAN. If the information sent using these 2 methods is inconsistent, this DTC will be stored.

Scheme 28

HINT

1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. 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 the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 29

1. CHECK CAN COMMUNICATION SYSTEM Check if CAN communication DTCs are output. HINT: If any DTCs for CAN communication system malfunction 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, Max.: 255 Almost same as actual speed (When driving) - 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 speed signal/Stop or Run Stop: Vehicle stopped Run: Vehicle running - 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 (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - POWER MANAGEMENT CONTROL ECU) Disconnect the L27 connector from the combination meter assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L5-14 (SPDI) - L27-7 (+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 ASSEMBLY Remove the combination meter. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/gauges-instrument-panels/#meter-service-information-except-phv) . Reconnect the L27 connector to the combination meter assembly. Reconnect the L5 connector to the power management control ECU. Connect an oscilloscope to terminal L27-7 (+S) and body ground. Turn the power switch on (IG). Turn the 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 displayed as shown in the illustration. TEXT IN ILLUSTRATION *1 Component with harness connected (Combination Meter 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 ASSEMBLY - NO. 3 JUNCTION BLOCK) Disconnect the 3A connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L27-7 (+S) - 3A-26 Always Below 1 ohms L27-7 (+S) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - NO. 3 JUNCTION BLOCK) 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) - 3A-2 Always Below 1 ohms L5-14 (SPDI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 3 JUNCTION BLOCK) OK --> REPLACE NO. 3 JUNCTION BLOCK
10. GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-phv/pre-iii-2010-2011/remont/communication-devices/#can-communication-system-diagnostics-introduction-except-phv__diagnostic-trouble-code-chart)
11. GO TO METER / GAUGE SYSTEM (Speedometer Malfunction). Refer to «Speedometer Malfunction»(/toyota/prius-phv/pre-iii-2010-2011/remont/gauges-instrument-panels/#metergauge-system-diagnostic-codes-circuit-tests-except-phv)
12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
13. GO TO METER / GAUGE SYSTEM (Speed Signal Circuit). Refer to «Speed Signal Circuit»(/toyota/prius-phv/pre-iii-2010-2011/remont/gauges-instrument-panels/#metergauge-system-diagnostic-codes-circuit-tests-except-phv)
14. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)

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. If the information from these 2 sources is inconsistent, this DTC will be stored.

Scheme 30

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuse for circuits related to this system before performing the following inspection procedure.

HINT

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

Scheme 31

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch assembly. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/exterior-lights/#lighting-exterior-service-information-except-phv) . 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 *1 Component without harness connected (Stop Light Switch Assembly) *2 Free *3 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 (STOP LIGHT SWITCH ASSEMBLY - POWER MANAGEMENT CONTROL ECU) 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 Stop light switch1/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - 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-phv/pre-iii-2010-2011/remont/exterior-lights/#lighting-exterior-service-information-except-phv)
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
8. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DTC C1249/49). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/anti-locktraction-control/#electronically-controlled-brake-system-diagnostics-introduction-except-phv__how-to-proceed-with-troubleshooting)

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

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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 (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__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-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

This DTC is stored when the power management control ECU detects a CAN communication error inside the power management control ECU.

Scheme 32

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is reinstalled.

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__dtc-check-clear) . Check for DTC 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-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
5. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

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

HINT

To allow use of the Techstream to inspect the push-button start function when the power source mode is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the Techstream and the power management control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

Scheme 33

Scheme 34

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. READ VALUE USING TECHSTREAM Reconnect the L5 and L6 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 Certification Waiting Timed Out Key certification error detection/ No or Yes No: Key certification error not detected Yes: Key certification error detected - 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 Start switch 1/ON or OFF ON: Power switch pushed OFF: Power switch not pushed - Start Switch2 Start switch 2/ON or OFF ON: Power switch pushed OFF: Power switch not pushed - 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 Power supply condition/All OFF, ACC ON, IG1 ON, IG2 ON, ST ON ALL OFF: All relays off ACC ON: ACC relay on IG1 ON: IG1 relay on IG2 ON: IG2 relay on ST ON: ST request signal on - 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 -2.5 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 -2.5 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 -2.5 V or more L6-1 (ACCD) - Body ground Power switch on (ACC) Output voltage at terminal AM21 or AM22 is -2.5 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-phv/pre-iii-2010-2011/remont/body-electrical/#power-switch-service-information-except-phv) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection 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 *1 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 (POWER SWITCH - POWER MANAGEMENT CONTROL ECU OR BODY GROUND) OK --> See step 13
9. CHECK FOR DTC Enter the following menus: Body Electrical / Power Source Control and Smart Key / DTC. 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 --> GO TO OTHER FLOW CHART (DTC B2287) A --> See step 14 C --> GO TO DIAGNOSTIC TROUBLE CODE CHART
10. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
11. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)
12. REPLACE POWER SWITCH. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-switch-service-information-except-phv)
13. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
14. GO TO OTHER FLOW CHART (Room Oscillator does not Recognize Key). Refer to «Room Oscillator does not Recognize Key»(/toyota/prius-phv/pre-iii-2010-2011/remont/door-locks-anti-theft-systems/#smart-key-system-keyless-entry-diagnostic-codes-symptom-tests-except-phv)

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

HINT

To allow use of the Techstream to inspect the push-button start function when the power source mode is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the Techstream and power management control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

WIRING DIAGRAM

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

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 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 (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. INSPECT IG2 RELAY See step 4 NG --> REPLACE IG2 RELAY 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 10 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL J/B) 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 (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 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 (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) 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 (ENGINE ROOM RELAY BLOCK ASSEMBLY - BODY GROUND) OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU See step 9 NG --> See step 11 OK --> See step 12
10. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
11. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
12. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

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

HINT

To allow use of the Techstream to inspect the push-button start function when the power source mode is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the Techstream and power management control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

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

1. CHECK HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
2. CHECK HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) 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 J/B) 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 (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 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-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/hoistjack/#introduction-except-phv)

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).

Scheme 35

Scheme 36

Note. When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, power source mode that was selected when the auxiliary battery was removed is restored. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 37

Scheme 38

1. CHECK HYBRID SYSTEM READY ON Place the electrical 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 / DTC. Check for DTCs. OK DTC is not output. NG --> See step 17 OK: Go to next step
3. CHECK FOR DTC Enter the following menus: Body Electrical / Power Source Control / Data List. Check for DTCs. OK DTC is not output. NG --> See step 18 OK: Go to next step
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 D --> See step 21 C --> See step 20 B --> See step 19 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 Stop light switch 1/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - 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 L code certification result/OK or NG OK: L code certification result normal NG: L code certification result abnormal - 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 Start request signal response/OK or NG OK: Start request condition signal received NG: Start request condition signal not received - OK OK appears on the screen. Result Result Proceed to OK (w/ Automatic Light Control System) A OK (w/o Automatic Light Control System) B NG B B --> REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) A: 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 S code certification result/OK or NG OK: S code certification result normal NG: S code certification result abnormal - OK OK appears on the screen. NG --> See step 15 OK: Go to next step
9. CHECK ID CODE BOX (IMMOBILIZER CODE ECU) Measure the voltage according to the value(s) in the table below. Waveform 1 Tester Connection L6-20 (IMO) - L5-6 (E1) Tool Setting 5 V/DIV., 500 ms/DIV Vehicle Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected Waveform 2 Tester Connection L6-21 (IMI) - L5-6 (E1) Tool Setting 5 V/DIV., 50 ms/DIV Vehicle Condition Power switch on (IG) OK The waveform is displayed as shown in illustration. TEXT IN ILLUSTRATION *1 Component with harness connected (Power Management Control ECU) NG --> REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) 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 Hybrid control system start request signal / ON or OFF ON: STSW signal is on OFF: STSW signal is off - OK Data List display changes when the power switch is operated. NG --> See step 22 OK --> See step 23
11. INSPECT STOP LIGHT SWITCH ASSEMBLY See step 3 NG --> See step 24 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 (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) OK --> See step 25
13. REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Replace transmission control ECU assembly. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/automatic-trans/#automatic-transmission-hybrid-p410-service-information-except-phv) . NEXT: Go to next step
14. CHECK HYBRID SYSTEM READY ON Place the electrical 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). Result Result Proceed to OK A NG (w/ Automatic Light Control System) B NG (w/o Automatic Light Control System) C C --> REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) B --> REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) A --> END (TRANSMISSION CONTROL ECU WAS DEFECTIVE)
15. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Replace certification ECU (smart key ECU assembly). NEXT: Go to next step
16. CHECK HYBRID SYSTEM READY ON Place the electrical 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 --> REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) OK --> END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)
17. GO TO HYBRID CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-phv/pre-iii-2010-2011/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction-except-phv__diagnostic-trouble-code-chart)
18. GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/prius-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-keyless-start-diagnsostics-introduction-except-phv__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-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-start-function-diagnostic-codes-circuit-tests-except-phv)
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-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-start-function-diagnostic-codes-circuit-tests-except-phv)
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-phv/pre-iii-2010-2011/remont/starter/#smart-key-system-start-function-diagnostic-codes-circuit-tests-except-phv)
22. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)
23. GO TO HYBRID CONTROL SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-phv/pre-iii-2010-2011/remont/engine-control-systems/#hybrid-control-system-diagnostics-introduction-except-phv__how-to-proceed-with-troubleshooting)
24. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/exterior-lights/#lighting-exterior-service-information-except-phv)
25. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(/toyota/prius-phv/pre-iii-2010-2011/remont/body-electrical/#power-distribution-service-information-except-phv)

See also:
• REMOVAL
• HOW TO PROCEED WITH TROUBLESHOOTING
• DTC CHECK / CLEAR
• REMOVAL
• DIAGNOSTIC TROUBLE CODE CHART
• Speedometer Malfunction
• REMOVAL
• HOW TO PROCEED WITH TROUBLESHOOTING
• REMOVAL
• Room Oscillator does not Recognize Key
• REMOVAL
• DIAGNOSTIC TROUBLE CODE CHART
• DIAGNOSTIC TROUBLE CODE CHART
• HOW TO PROCEED WITH TROUBLESHOOTING
• DTC B2271: Ignition Hold Monitor Malfunction