Starting System (1NZ-FXE): Overview Toyota Prius II рестайлинг

DESCRIPTION

This DTC is output when the IG output circuits inside the power source control ECU are open or short.

DTC B2271 - IGNITION HOLD MONITOR MALFUNCTION

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1. CHECK FOR DTC Delete the DTC (see «DTC CHECK / CLEAR»(ref-289890-S36383088992008070800000) ). Check for DTCs again. OK: No DTC is output. OK: END NG: GO TO NEXT STEP
2. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the driver side junction block. Remove the AM2 fuse from the engine room junction block. Measure the resistance of the fuses. Standard resistance: Below 1 ohms NG : REPLACE FUSE OK : GO TO NEXT STEP
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY) Disconnect the P6 ECU connector. Measure the voltage of the wire harness side connector. Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : REPLACE POWER SOURCE CONTROL ECU

This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG1 relay actuation circuit inside the power source control ECU to the IG1 relay.

DTC B2272 - IGNITION 1 MONITOR MALFUNCTION

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1. READ VALUE OF DATA LIST (IG1 RELAY) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Select the items below in the DATA LIST and read the displays on the Techstream. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note IG1 RELAY MON 1 IG1 outer relay monitor / ON or OFF ON: Power switch ON (IG) OFF: Power switch OFF - OK : ON (power switch ON (IG)) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. INSPECT IG1 RELAY Remove the IG1 relay from the driver side junction block. Measure the resistance of the relay. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG : REPLACE IG1 RELAY OK : GO TO NEXT STEP
3. CHECK WIRE HARNESS (DRIVER SIDE JUNCTION BLOCK - ECU AND BODY GROUND) Disconnect the 1J and 1E driver side junction block connectors. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 1J-3 - P6-34 (IG1D) Below 1 ohms 1J-3 or P6-34 (IG1D) - Body ground 10 kohms or higher 1E-17 - Body ground Below 1 ohms NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
4. CHECK DRIVER SIDE JUNCTION BLOCK Remove the IG1 relay from the driver side junction block. Disconnect the 1J and 1E driver side junction block connectors. Measure the resistance of the driver side junction block. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 1J-3 - Driver side junction block IG1 relay terminal 2 Below 1 ohms 1E-17 - Driver side junction block IG1 relay terminal 1 Below 1 ohms NG : REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY OK : REPLACE POWER SOURCE CONTROL ECU

This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG2 relay actuation circuit inside the power source control ECU to the IG2 relay.

DTC B2273 - IGNITION 2 MONITOR MALFUNCTION

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1. READ VALUE OF DATA LIST (IG2 RELAY) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note IG2 RELAY MON 2 IG2 inner relay monitor / ON or OFF ON: Power switch ON (IG) OFF: Power switch OFF - OK : ON (power switch ON (IG)) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECU AND BODY GROUND) Disconnect the 3I junction block connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 3I-2 - P6-35 (IG2D) Below 1 ohms 3I-3 - Body ground Below 1 ohms NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK ENGINE ROOM RELAY BLOCK Disconnect the 3I and 3K junction block connectors. Measure the resistance of the junction block connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition 3K-1 - 3I-4 When battery voltage is not applied to terminals 3I-2 and 3I-3 10 kohms or higher 3K-1 - 3I-4 When battery voltage is applied to terminals 3I-2 and 3I-3 Below 1 ohms NG : REPLACE ENGINE ROOM RELAY BLOCK OK : REPLACE POWER SOURCE CONTROL ECU

This DTC is output when a malfunction is occurring in the ACC output circuit, which is from the ACC relay actuation circuit inside the power source control ECU to the ACC relay.

DTC B2274 - ACC MONITOR MALFUNCTION

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1. READ VALUE OF DATA LIST (ACC RELAY) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note ACC RELAY MON ACC relay monitor / ON or OFF ON: Power switch ON (ACC) OFF: Power switch OFF - OK : ON (power switch ON (ACC)) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. INSPECT ACC RELAY Remove the ACC relay. Measure the resistance of the relay. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG : REPLACE ACC RELAY OK : GO TO NEXT STEP
3. CHECK WIRE HARNESS (ACC RELAY - POWER SOURCE CONTROL ECU AND BODY GROUND) Remove the ACC relay. Disconnect the P6 connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition A12-1 - P6-11 (ACCD) Below 1 ohms A12-2 - Body ground Below 1 ohms A12-1 or P6-11 (ACCD) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : REPLACE POWER SOURCE CONTROL ECU

This DTC is output when the ST output circuits inside the power source control ECU is open or short.

DTC DETECTION CONDITION TROUBLE AREA

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1. CHECK FOR DTC Delete the DTC (see «DTC CHECK / CLEAR»(ref-289890-S36383088992008070800000) ). Check for DTCs again. OK: No DTC is output. OK: END NG: GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HYBRID VEHICLE CONTROL ECU) Disconnect the P6 and H14 ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-39 (STSW) - H14-5 (ST2) Below 1 ohms P6-39 (STSW) or H14-5 (ST2) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing the power source control ECU with a normally functioning ECU, check that the hybrid control system can start normally. OK : Hybrid control system can start normally. NG : GO TO HYBRID CONTROL SYSTEM OK : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

This DTC is output when the submersion circuit monitor inside the power source control ECU detects that the vehicle is submerged in water.

DTC DETECTION CONDITION TROUBLE AREA

This DTC is output when 1) a malfunction is detected between the power source control ECU and the power switch; or 2) either of the switches inside the power switch is malfunctioning.

DTC B2278 - ENGINE SWITCH CIRCUIT MALFUNCTION

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1. READ VALUE OF DATA LIST (START SWITCH 1 and 2) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note ST SW1 Start Switch 1 / ON or OFF ON: Power switch ON (IG) OFF: Power switch OFF - ST SW2 Start Switch 2 / ON or OFF ON: Power switch ON (IG) OFF: Power switch OFF - OK : ON (power switches 1 and 2 are ON (IG)) appears on the screen OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the P11 power switch connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P11-5 (SS1) - P6-14 (SSW1) Below 1 ohms P11-7 (SS2) - P6-37 (SSW2) Below 1 ohms P11-6 - Body ground Below 1 ohms P11-5 (SS2) or P6-14 (SSW1) - Body ground 10 kohms or higher P11-7 (SS2) or P6-37 (SSW2) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. INSPECT POWER SWITCH Remove the power switch. Measure the resistance of the switch. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Switch Condition Specified Condition 7 (SS2) - 6 (GND) Pushed Below 1 ohms 5 (SS1) - 6 (GND) Pushed Below 1 ohms 7 (SS2) - 6 (GND) Released 10 kohms or higher 5 (SS1) - 6 (GND) Released 10 kohms or higher NG : REPLACE POWER SWITCH OK : REPLACE POWER SOURCE CONTROL ECU

The power source control ECU and the transmission control ECU are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.

DTC B2281 - "P" SIGNAL MALFUNCTION

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1. READ VALUE OF DATA LIST (SHIFT P SIGNAL) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note SHIFT P SIG Shift P Signal / ON or OFF ON: Shift P signal ON (Shift position is P) OFF: Shift P signal OFF (Shift position is not P) - OK : "ON" (P signal is ON) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - TRANSMISSION CONTROL ECU) Disconnect the P6 and T4 ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-5 (P) - T4-8 (PPOS) Below 1 ohms P6-5 (P) or T4-8 (PPOS) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing the power source control ECU with a normally functioning ECU, check that the hybrid control system can start normally. OK : Hybrid control system can start normally. NG : GO TO SHIFT CONTROL SYSTEM OK : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

The power source control ECU and the combination meter are connected by a cable and the BEAN. This DTC is output when: 1) the cable information and BEAN information are inconsistent; and 2) a malfunction is detected between the vehicle speed sensor and combination meter.

DTC DETECTION CONDITION TROUBLE AREA

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1. READ VALUE OF DATA LIST (VEHICLE SPEED SIGNAL) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note VEHICLE SPD SIG Vehicle speed signal / Stop or Run Stop: Vehicle is stopped Run: Vehicle is running - OK : STOP (vehicle is stopped) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - IG2 JOINING CONNECTOR) Disconnect the P6 connector. Disconnect the IG2 connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-19 (SPD) - IG2-16 Below 1 ohms P6-19 (SPD) or IG2-16 - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing the power source control ECU with a normally functioning ECU, check that the hybrid control system can start normally. OK : Hybrid control system can start normally. NG : GO TO METER / GAUGE SYSTEM OK : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

This DTC is output when: 1) the brake signal circuit between the power source control ECU and the stop light switch is malfunctioning, and 2) the BEAN information is inconsistent.

DTC B2284 - BRAKE SIGNAL MALFUNCTION

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1. READ VALUE OF DATA LIST (STOP LIGHT SWITCH) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note STOP LAMP SW1 Stop light switch 1 / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK : ON (brake pedal depressed) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. CHECK WIRE HARNESS (STOP LIGHT SWITCH - POWER SOURCE CONTROL ECU AND BATTERY) Disconnect the S16 switch connector. Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition S16-1 - P6-1 (STP) Below 1 ohms Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition S16-2 - Body ground 10 to 14 V NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition 1 - 2 Switch pin not pushed Below 1 ohms 3 - 4 Switch pin not pushed 10 kohms or higher 1 - 2 Switch pin pushed 10 kohms or higher 3 - 4 Switch pin pushed Below 1 ohms NG : REPLACE STOP LIGHT SWITCH ASSEMBLY OK : REPLACE POWER SOURCE CONTROL ECU

The power source control ECU and the hybrid vehicle control ECU are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.

DTC B2286 - READY SIGNAL MALFUNCTION

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1. READ VALUE OF DATA LIST (READY SIGNAL) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note READY SIG Ready signal / ON or OFF ON: Power switch ON (READY) OFF: Power switch OFF or ON (IG) or ON (ACC) - OK : ON (power switch is ON (READY)) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HYBRID VEHICLE CONTROL ECU) Disconnect the P6 and H14 ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-22 (RDY) - H14-28 (RDY) Below 1 ohms P6-22 (RDY) or H14-28 (RDY) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing the power source control ECU with a normally functioning ECU, check that the hybrid vehicle control system can start normally. OK : Hybrid vehicle control system can start normally. NG : GO TO HYBRID CONTROL SYSTEM OK : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

This DTC is output when: 1) any other DTC is set in the power source control ECU; or 2) the wire harness between the power source control ECU and the transponder key ECU is open or short.

DTC B2287 - LIN COMMUNICATION MASTER MALFUNCTION; DTC B2289 - KEY COLLATION WAITING TIME OVER

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1. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - TRANSPONDER KEY ECU) Disconnect the P6 and T5 ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-30 (LIN1) - T5-14 (LIN1) Below 1 ohms P6-30 (LIN1) or T5-14 (LIN1) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
2. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing power source control ECU with a normally functioning ECU, check that the hybrid control system can start normally. Result RESULT CHART Result Proceed to Hybrid system can start normally A Hybrid system cannot start (w/ smart key system (for door lock)) B Hybrid system cannot start (w/o smart key system (for door lock)) C B : GO TO ENGINE IMMOBILIZER SYSTEM (w/ SMART KEY SYSTEM) C : GO TO ENGINE IMMOBILIZER SYSTEM (w/o SMART KEY SYSTEM) A : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

When the key is inserted into the key slot and the power switch is pressed, signals are input to the power source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is performed by pressing and releasing the power switch until the desired power mode is selected (the power modes cycle in the order shown above).

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1. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the driver side junction block. Remove the AM2 fuse from the engine room junction block. Measure the resistance of the fuses. Standard resistance: Below 1 ohms NG : REPLACE FUSE OK : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connector. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-6 (GND2) - Body ground Below 1 ohms Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK FOR DTC (POWER SOURCE CONTROL ECU) Check for DTCs of the power source control ECU. OK : DTCs of the power source control ECU are not output. NG : GO TO DTC CHART OK : GO TO NEXT STEP
4. CHECK FOR DTC (TRANSPONDER KEY ECU) Check for DTCs of the transponder key ECU. Result RESULT CHART Result Proceed to DTCs of transponder key ECU are not output A DTCs of transponder key ECU are output (w/ smart key system (for door lock)) B DTCs of transponder key ECU are output (w/o smart key system (for door lock)) C B : GO TO ENGINE IMMOBILIZER SYSTEM (w/ SMART KEY SYSTEM) C : GO TO ENGINE IMMOBILIZER SYSTEM (w/o SMART KEY SYSTEM) A : GO TO NEXT STEP
5. READ VALUE OF DATA LIST (STEERING UNLOCK SWITCH) Connect the Techstream to the DLC3. Press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION DIAGNOSTIC CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note STR UNLK SW Steering unlock switch / ON or OFF ON: Key is in key slot OFF: No key is in key slot - OK : ON (key is in key slot) appears on the screen. OK : Go to step 8 NG : GO TO NEXT STEP
6. CHECK WIRE HARNESS (KEY SLOT - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the K2 key slot connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition K2-3 (KSW2) - P6-25 (CDSW) Below 1 ohms K2-2 (COM) - Body ground Below 1 ohms K2-3 (KSW2) or P6-25 (CDSW) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
7. INSPECT KEY SLOT Remove the key slot. Measure the resistance of the key slot. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition K2-3 (KSW2) - K2-2 (COM) Key is in key slot 10 kohms or higher NG : REPLACE KEY SLOT OK : REPLACE POWER SOURCE CONTROL ECU
8. READ VALUE OF DATA LIST (START SWITCH 1 and 2) Connect the Techstream to the DLC3. Press the Techstream main switch ON. Read the DATA LIST according to the displays on the tester. Power source control ECU ITEM NORMAL CONDITION DIAGNOSTIC CHART Tester Display Measurement Item / Display (Range) Normal Condition Diagnostic Note ST SW1 Start switch 1 / ON or OFF ON: Power switch ON (IG) (push power switch) OFF: Power switch OFF (release power switch) - ST SW2 Start switch 2 / ON or OFF ON: Power switch ON (IG) (push power switch) OFF: Power switch OFF (release power switch) - OK : "ON" (power switch ON (IG)) appears on the screen. OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
9. CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the P11 power switch connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 5 (SS1) - 14 (SSW1) Below 1 ohms 7 (SS2) - 37 (SSW2) Below 1 ohms 6 (GND) - Body ground Below 1 ohms 5 (SS1) or 14 (SSW1) - Body ground 10 kohms or higher 7 (SS2) or 37 (SSW2) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
10. INSPECT POWER SWITCH Remove the power switch. Measure the resistance of the switch. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Switch Condition Specified Condition 7 (SS2) - 6 (GND) Pushed Below 1 ohms 5 (SS1) - 6 (GND) Pushed Below 1 ohms 7 (SS2) - 6 (GND) Released 10 kohms or higher 5 (SS1) - -6 (GND) Released 10 kohms or higher NG : REPLACE POWER SWITCH OK : REPLACE POWER SOURCE CONTROL ECU

When the key is inserted into the key slot and the power switch is pressed, signals are input to the power source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is performed by pressing and releasing the power switch until the desired power mode is selected (the power modes cycle in the order shown above).

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1. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the driver side junction block. Remove the AM2 fuse from the engine room junction block. Measure the resistance of the fuses. Standard resistance: Below 1 ohms NG : REPLACE FUSE OK : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connector. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-6 (GND2) - Body ground Below 1 ohms Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK FOR DTC Check for DTCs of the power source control ECU. OK : DTCs of the power source control ECU are not output. NG : GO TO DTC CHART OK : GO TO NEXT STEP
4. INSPECT IG1 RELAY Remove the IG1 relay from the driver side junction block. Measure the resistance of the relay. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG : REPLACE IG1 RELAY OK : GO TO NEXT STEP
5. CHECK WIRE HARNESS (DRIVER SIDE JUNCTION BLOCK - ECU AND BODY GROUND) Disconnect the 1J and 1E junction block connectors. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 1J-3 - P6-34 (IG1D) Below 1 ohms 1E-17 - Body ground Below 1 ohms 1J-3 or P6-34 (IG1D) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
6. INSPECT DRIVER SIDE JUNCTION BLOCK Disconnect the 1J and 1E junction block connectors. Remove the IG1 relay from the driver side junction block. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 1J-3 - Driver side junction block IG1 relay terminal 2 Below 1 ohms 1E-17 - Driver side junction block IG1 relay terminal 1 Below 1 ohms NG : REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY OK : GO TO NEXT STEP
7. CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECU AND BODY GROUND) Disconnect the 3I junction block connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 3I-2 - P6-35 (IG2D) Below 1 ohms 3I-3 - Body ground Below 1 ohms 3I-2 or P6-35 (IG2D) - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
8. CHECK POWER SOURCE CONTROL ECU (IG1D, IG2D VOLTAGE) Measure the voltage of the connector. Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition P6-34 (IG1D) - Body ground Power switch ON (ACC) Below 1 V P6-35 (IG2D) - Body ground Power switch ON (ACC) Below 1 V P6-34 (IG1D) - Body ground Power switch ON (IG) 10 to 14 V P6-35 (IG2D) - Body ground Power switch ON (IG) 10 to 14 V NG : REPLACE POWER SOURCE CONTROL ECU OK : GO TO NEXT STEP
9. CHECK ENGINE ROOM RELAY BLOCK Measure the voltage of the connector. Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition 3I-4 - Body ground Power switch ON (IG) 10 to 14 V NG : REPLACE ENGINE ROOM RELAY BLOCK OK : GO TO NEXT STEP
10. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing the power source control ECU with a normally functioning ECU, check that the power switch can be set to ON (IG). Result RESULT CHART Result Proceed to Power switch can be set to ON (IG) A Power switch cannot be set to ON (IG) (w/ smart key system (for door lock)) B Power switch cannot be set to ON (IG) (w/o smart key system (for door lock)) C B : GO TO ENGINE IMMOBILIZER SYSTEM (w/ SMART KEY SYSTEM) C : GO TO ENGINE IMMOBILIZER SYSTEM (w/o SMART KEY SYSTEM) A : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

When the key is inserted into the key slot and the power switch is pressed, signals are input to the power source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is performed by pressing and releasing the power switch until the desired power mode is selected (the power modes cycle in the order shown above).

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1. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the driver side junction block. Remove the AM2 fuse from the engine room junction block. Measure the resistance of the fuses. Standard resistance: Below 1 ohms NG : REPLACE FUSE OK : GO TO NEXT STEP
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connector. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-6 (GND2) - Body ground Below 1 ohms Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
3. CHECK FOR DTC Check for DTCs of the power source control ECU. OK : DTCs of the power source control ECU are not output. NG : GO TO DTC CHART OK : GO TO NEXT STEP
4. INSPECT ACC RELAY Remove the ACC relay. Measure the resistance of the relay. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG : REPLACE ACC RELAY OK : GO TO NEXT STEP
5. CHECK WIRE HARNESS (ACC RELAY - POWER SOURCE CONTROL ECU AND BODY GROUND) Remove the ACC relay. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition A12-1 - P6-11 (ACCD) Below 1 ohms A12-2 - Body ground Below 1 ohms A12-1 - Body ground 10 kohms or higher NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : GO TO NEXT STEP
6. CHECK POWER SOURCE CONTROL ECU (ACCD VOLTAGE) Measure the voltage of the connector. Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition P6-11 (ACCD) - Body ground Power switch ON (ACC) 10 to 14 V P6-11 (ACCD) - Body ground Power switch OFF Below 1 V NG : REPLACE POWER SOURCE CONTROL ECU OK : GO TO NEXT STEP
7. CHECK OPERATION OF POWER SOURCE CONTROL ECU After replacing the power source control ECU with a normally functioning ECU, check that the power switch can be set to ON (ACC). Result RESULT CHART Result Proceed to Power switch can be set to ON (ACC) A Power switch cannot be set to ON (ACC) (w/ smart key system (for door lock)) B Power switch cannot be set to ON (ACC) (w/o smart key system (for door lock)) C B : GO TO ENGINE IMMOBILIZER SYSTEM (w/ SMART KEY SYSTEM) C : GO TO ENGINE IMMOBILIZER SYSTEM (w/o SMART KEY SYSTEM) A : NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

When the key is inserted into the key slot and the power switch is pressed, signals are input to the power source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is performed by pressing and releasing the power switch until the desired power mode is selected (the power modes cycle in the order shown above). When the shift position is P, the brake pedal is depressed and held and the power switch is pressed, the power switch mode changes to ON (READY), signifying that the hybrid system has started operating.

Scheme 48

Scheme 49

Scheme 50

Scheme 51

1. BASIC INSPECTION Check that the P position switch is ON. Turn the power switch ON (READY) and check that the hybrid control system starts normally. Make sure the brake pedal is depressed at this time. OK : Hybrid control system starts normally (power switch can be set to ON (READY)). OK : END NG : GO TO NEXT STEP
2. CHECK OPERATION OF POWER SWITCH Check that the power mode can be changed by pushing the power switch. HINT: With the power switch OFF, do not depress the brake pedal and push the power switch repeatedly. The power mode should change as follows: ON (ACC), ON (IG), OFF. With the power switch OFF, depress the brake pedal and push the power switch repeatedly. The power mode should change as follows: ON (READY), OFF. OK : Power switch operates normally. NG : OTHER PROBLEM OK : GO TO NEXT STEP
3. CHECK FOR DTC Check for DTCs of the power source control ECU. OK : DTCs of the power source control ECU are not output NG : GO TO DTC CHART OK : GO TO NEXT STEP
4. READ VALUE OF DATA LIST (STOP LIGHT SWITCH 1 and 2) Connect the Techstream to the DLC3. Turn the power switch ON (IG) and push the Techstream main switch ON. Read the DATA LIST according to the display on the tester. Power source control ECU ITEM NORMAL CONDITION DIAGNOSTIC CHART Tester Display Measurement Item / Display Normal Condition Diagnostic Note STOP LAMP SW1 Stop light switch 1 / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - STOP LAMP SW2 Stop light switch 2 / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK : ON (stop light switch ON) appears on the screen. OK : Go to step 8 NG : GO TO NEXT STEP
5. CHECK POWER SOURCE CONTROL ECU (STP VOLTAGE) Measure the voltage when the brake pedal is operated. Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition P6-1 (STP) - Body ground Brake pedal released 10 to 14 V P6-1 (STP) - Body ground Brake pedal depressed Below 1 V OK : REPLACE POWER SOURCE CONTROL ECU NG : GO TO NEXT STEP
6. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Condition Specified Condition 1 - 2 Switch pin not pushed Below 1 ohms 3 - 4 Switch pin not pushed 10 kohms or higher 1 - 2 Switch pin pushed 10 kohms or higher 3 - 4 Switch pin pushed Below 1 ohms NG : REPLACE STOP LIGHT SWITCH ASSEMBLY OK : GO TO NEXT STEP
7. CHECK WIRE HARNESS (STOP LIGHT SWITCH - POWER SOURCE CONTROL ECU AND BATTERY) Disconnect the S16 switch connector. Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connectors. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition S16-1 - P6-1 (STP) Below 1 ohms Standard voltage VOLTAGE TESTER CONNECTION SPECIFICATION Tester Connection Specified Condition S16-2 - Body ground 10 to 14 V NG : REPAIR OR REPLACE HARNESS AND CONNECTOR OK : REPLACE POWER SOURCE CONTROL ECU
8. CHECK FOR DTC Check for DTCs of the hybrid vehicle control ECU. OK : DTCs of the hybrid vehicle control ECU are not output NG : GO TO HYBRID CONTROL SYSTEM OK : REPLACE POWER SOURCE CONTROL ECU

Scheme 52

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Scheme 54

1. CHECK POWER SWITCH MODE CHANGE FUNCTION Check the function of the power switch. Check that power switch mode changes in accordance with the conditions of the shift position and brake pedal. HINT: For vehicles with the smart entry system, the power switch functions not only when the key is inserted into the key slot but also when the driver carries the key. Specified condition BRAKE PEDAL AND SHIFT POSITION Shift Position Brake Pedal Change of power switch mode (Arrow "-->" means 1 press of power switch) P Released OFF --> ON (ACC) --> ON (IG) --> OFF (Repeated) P Depressed OFF --> Hybrid system starts P Depressed ON (ACC) --> Hybrid system starts P Depressed ON (IG) --> Hybrid system starts P Depressed Hybrid system operating --> OFF P Released Hybrid system operating --> OFF Any position other than P Released ON (ACC) --> ON (IG) Any position other than P Depressed ON (ACC) --> ON (IG) Any position other than P Released ON (IG) --> OFF after shift position switched to P (shift-linked OFF function) Any position other than P Released Hybrid system operating --> OFF after shift position switched to P (auto P control function) Any position other than P Depressed Hybrid system operating --> OFF after shift position switched to P (auto P control function) Check if power switch mode changes without pressing the power switch. With power switch mode ON (ACC) and the shift position in P, pull out the key. Check that power switch mode changes from ON (ACC) to OFF automatically. With power switch mode ON (ACC) and the shift position in P, wait for at least 1 hour. Check that power switch mode changes from ON (ACC) to OFF automatically.
2. CHECK INTERLOCK FUNCTION Insert the key into the key slot, and change power switch modes and shift position according to the table below. Check whether or not the key is locked in the key slot. Specified condition POWER SWITCH MODE AND SHIFT POSITION Power Switch Mode Shift Position Key Status OFF P Not locked in OFF Any position except P - ON (ACC) P Not locked in ON (ACC) Any position except P Locked in ON (IG) P Locked in ON (IG) Any position except P Locked in READY (hybrid system ON) P Locked in READY (hybrid system ON) Any position except P Locked in
3. CHECK INDICATOR CONDITION Check the power indicator on the power switch. Check that the power indicator illuminates and changes colors according to the table below. Specified condition POWER SWITCH MODE AND INDICATOR CONDITION Power Switch Mode Indicator Status OFF OFF ON (ACC) Green illumination ON (IG) Amber illumination Hybrid system ON OFF Push button start system malfunctioning Flashes continuously in amber

Scheme 55

1. REMOVE REAR NO. 2 FLOOR BOARD (See «REMOVAL»(/toyota/prius/ii-2005-2011/remont/charging-system/#charging-system-1nz-fxe) )
2. REMOVE REAR DECK FLOOR BOX (See «REMOVAL»(/toyota/prius/ii-2005-2011/remont/charging-system/#charging-system-1nz-fxe) )
3. REMOVE REAR NO. 3 FLOOR BOARD (See «REMOVAL»(/toyota/prius/ii-2005-2011/remont/charging-system/#charging-system-1nz-fxe) )
4. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
5. REMOVE NO. 1 INSTRUMENT PANEL REGISTER ASSEMBLY (see «REMOVAL»(ref-289871-S38188274822008070800000) )
6. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY (See «REMOVAL»(ref-289871-S38188274822008070800000) )
7. REMOVE UPPER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY (See «REMOVAL»(ref-289871-S38188274822008070800000) )
8. REMOVE POWER SWITCH Push the 2 claws and then remove the power switch.

Scheme 56

1. INSPECT POWER SWITCH Measure the resistance of the switch. Standard resistance RESISTANCE TESTER CONNECTION SPECIFICATION Tester Connection Switch Condition Specified Condition 7 (SS2) - 6 (GND) Pushed Below 1 ohms 5 (SS1) - 6 (GND) Pushed Below 1 ohms 7 (SS2) - 6 (GND) Released 10 kohms or higher 5 (SS1) - 6 (GND) Released 10 kohms or higher If the resistance is not as specified, replace the power switch.

See also:
• REMOVAL