Push Button Start System - Diagnosis: Diagnosis Toyota Prius II

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use this procedure to troubleshoot the push button start system.
2. The hand-held tester should be used in steps 3, 4 and 6.

1. VEHICLE BROUGHT TO WORKSHOP
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See «CUSTOMER PROBLEM ANALYSIS CHECK»(ref-182906-S25639492502005081100000) )
3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN) Use the hand-held tester to check for normal function of the multiplex communication system. (ECU unconnected, communication line malfunctioning) Without code outputs, proceed to A. (ECU unconnected, communication line malfunctioning) With code outputs, proceed to B. B: Go to MULTIPLEX COMMUNICATION SECTION (See DIAGNOSTIC TROUBLE CODE CHART ) A: Go to next step.
4. DTC CHECK (See «DTC CHECK/CLEAR»(ref-182906-S25320395432005081100000) ) Check for DTC and note any codes that are output. Delete the DTC. Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests. If the DTC does not reoccur, proceed to A. If the DTC reoccurs, proceed to B. B Go to step 6 A: Go to next step.
5. PROBLEM SYMPTOMS TABLE (See «PROBLEM SYMPTOMS TABLE»(ref-182906-S06245469192005081100000) ) If the fault is not listed on the problem symptoms table, proceed to A. If the fault is listed on the problem symptoms table, proceed to B. B Go to step 7 A: Go to next step.
6. OVERALL ANALYSIS AND TROUBLESHOOTING DATA LIST/ACTIVE TEST (see «DATA LIST/ACTIVE TEST»(ref-182906-S33432857542005081100000) ) Inspection with the hand-held tester (DATA LIST). Inspection with the hand-held tester (ACTIVE TEST). On-vehicle Inspection (see «ON-VEHICLE INSPECTION»(ref-182906-S01100487392005081100000) ) Terminal of ECU (see «TERMINALS OF ECU»(ref-182906-S14193969662005081100000) )
7. ADJUST, REPAIR OR REPLACE
8. CONFIRMATION TEST END

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1. CHECK POWER SOURCE CONTROL ECU Disconnect the P6 ECU connector. Measure the resistance and voltage of each terminal of the wire harness side connector. Standard: TERMINAL DESCRIPTION & CONDITION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition AM1 (P6-33) - Body ground R - Body ground +B power supply Constant 10 to 14 V AM2 (P6-12) - Body ground W - Body ground +B power supply Constant 10 to 14 V CDSW (P6-25) - Body ground L - Body ground Key condition No key in key slot --> Key inserted Below 1 ohms --> 10 kohms or higher SSW1 (P6-14) - Body ground B - Body ground Power switch signal Power switch pushed --> Not pushed Below 1 ohms --> 10 kohms or higher SSW2 (P6-37) - Body ground Y - Body ground Power switch signal Power switch pushed --> Not pushed Below 1 ohms --> 10 kohms or higher GND2 (P6-6) - Body ground W-B - Body ground Ground Constant Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the P6 ECU connector. Measure the resistance and voltage of each terminal of the connector. Standard: TERMINAL DESCRIPTION & CONDITION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition SOL1 (P6-3) - GND (P6-6) P - W-B Power switch signal Power switch ON and brake pedal is not pushed, Power switch ON (ACC) --> Power switch ON (IG) 0 V --> 10 to 14 V SOL2 (P6-20) - GND (P6-6) GR - W-B Power switch signal Constant Below 1 ohms ACCD (P6-11) - GND (P6-6) G - W-B ACC signal Power switch OFF Power switch ON (ACC) 0 V --> 10 to 14 V IG1D (P6-34) - GND (P6-6) B - W-B IG1 signal Power switch ON (ACC) --> Power switch ON (IG) 0 V --> 10 to 14 V IG2D (P6-35) - GND (P6-6) V - W-B IG2 signal Power switch ON (ACC) Power switch ON (IG) 0 V --> 10 to 14 V STP (P6-1) - GND (P6-6) L - W-B Stop lamp signal Brake pedal depressed --> released 10 to 14 V --> 0 V If the result is not as specified, the ECU may have a malfunction.
2. CHECK TRANSPONDER KEY ECU ASSY Disconnect the T5 ECU connector. Measure the resistance and voltage between each terminal of the wire harness side connector. Standard: TERMINAL STANDARD CONDITION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition CPUB (T5-3) - GND (T5-22) L - W-B Battery Constant 10 to 14 V IG (T5-4) - GND (T5-22) O - W-B Power switch (IG) Power switch OFF --> ON (IG) 0 V --> 10 to 14 V ACC (T5-12) -GND (T5-22) P - W-B Power switch (ACC) Power switch OFF --> ON (ACC) 0 V --> 10 to 14 V CUWS (T5-5) - GND (T5-22) B - W-B Unlock warning switch No key in key slot --> Key inserted 10 kohms or higher --> Below 1 ohms AGND (T5-7) - GND (T5-22) P - W-B Ground Constant Below 1 ohms GND (T5-22) - Body ground W-B - Body ground Ground Constant Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the T5 ECU connector. Measure the voltage of each terminal of the connector. Standard: TERMINAL STANDARD CONDITION Symbols Terminal No. Wiring Color Terminal Description Condition Specified Condition CUWS (T5-5) - GND (T5-22) B - W-B Unlock warning switch No key in key slot --> Key inserted 10 to 14 V Below 1 V VC5 (T5-20) - GND (T5-22) Y - W-B Power source No key in key slot --> Key inserted 0 V 4.6 to 5.4 V If the result is not as specified, the ECU may have a malfunction.
3. CHECK HYBRID VEHICLE CONTROL ECU Disconnect the H14, H15, H16 and H17 ECU connectors. Measure the resistance and voltage between each terminal of the connectors. Standard: TERMINAL STANDARD CONDITION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition ST2 (H14-5) - GND1 (H14-1) Y-W-B Ignition start control signal input Power switch (READY) 10 to 14 V IGSW (H14-7) - GND1 (H14-1) O-W-B Ignition ready control signal input Power switch ON (IG) 10 to 14 V BATT (H15-6) - GND1 (H14-1) Y-W-B Battery Constant 10 to 14 V +B1 (H16-7) - GND1 (H14-1) L-W-B Ignition power supply Power switch ON (IG) 10 to 14 V +B2 (H16-6) - GND1 (H14-1) L-W-B Ignition power supply Power switch ON (IG) 10 to 14 V GND1 (H14-1) - Body ground W-B - Body ground Ground Constant Below 1 ohms GND2 (H14-4) - Body ground W-B - Body ground Ground Constant Below 1 ohms If the result is not as specified, the ECU may have a malfunction.
4. CHECK TRANSMISSION CONTROL ECU Disconnect the T4 ECU connector. Measure the resistance and voltage of each terminal of the wire harness side connector. Standard: TERMINAL STANDARD CONDITION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition BATT (T4-13) - Body ground L - Body ground +B power supply Constant 10 to 14 V +B (T4-1) - Body ground L - Body ground Ignition power supply Power switch ON (IG) 10 to 14 V E1 (T4-15) - Body ground W-B - Body ground Ground Constant Below 1 ohms E01 (T4-3) - Body ground W-B - Body ground Ground Constant Below 1 ohms E02 (T4-2) - Body ground W-B - Body ground Ground Constant Below 1 ohms If the result is not as specified, the ECU may have a malfunction.

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1. DESCRIPTION Push button start system control system data and its Diagnosis Trouble Codes (DTCs) can be read in the Data Link Connector 3 (DLC3). When the system seems to be malfunctioning, use the hand-held tester to check for malfunctions and perform repairs.
2. CHECK DLC3 HINT: The vehicle uses the ISO 9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format. TERMINAL REFERENCE Symbol Terminal No. Name Reference terminal Result Condition SIL 7 Bus "+" line 5 - Signal ground Pulse generation During transmission CG 4 Chassis ground Body ground Below 1 ohms Constant SG 5 Signal ground Body ground Below 1 ohms Constant BAT 16 Battery positive Body ground 11 to 14 V Constant If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of the hand-held tester (with CAN VIM) to the DLC3, turn the power switch ON (IG) and attempt to use the hand-held tester. If the screen displays UNABLE TO CONNECT TO VEHICLE, a problem exists in the vehicle side or tester side. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still impossible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual.
3. CHECK BATTERY VOLTAGE Standard: 11 to 14 V If the voltage is below 11 V, replace the battery before proceeding.

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1. CHECK DTC Connect the hand-held tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the DLC3. Turn the power switch ON (IG). Read the DTCs by following the directions on the tester screen. HINT: Refer to the hand-held tester operator's manual for further details.
2. CLEAR DTC Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG). Erase the DTCs by following the directions on the tester screen. HINT: Refer to the hand-held tester operator's manual for further details.

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1. DATA LIST HINT: Using the hand-held tester DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to shorten labor time. Connect the hand-held tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the DLC3. Turn the power switch ON (IG). Read the DATA LIST according to the display on the tester. Power source control ECU
2. ACTIVE TEST HINT: Performing the hand-held tester ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to shorten the labor time. The DATA LIST can be displayed during the ACTIVE TEST. Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG). Perform the ACTIVE TEST according to the display on the tester. Power source control ECU

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1. DTC CHECK If a malfunction code is displayed during the DTC check, check the suspected area listed for that code in the table below, and proceed to the appropriate page.

CIRCUIT DESCRIPTION

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

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1. CHECK DTCS Delete the DTC (see «DTC CHECK/CLEAR»(ref-182906-S25320395432005081100000) ). Check for DTCs again. OK: No DTC is output. NG: Go to step 2 OK: END
2. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the instrument panel J/B assy. Remove the AM2 fuse from the engine room J/B. Measure the resistance. Standard: Below 1 ohms NG: REPLACE FUSE OK: Go to next step.
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the P6 ECU connector. Measure the voltage of the wire harness side connector. Standard: STANDARD CONDITION Tester Connection Voltage 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 the IG output circuit from the inside of the power source control ECU to the IG1 relay is malfunctioning.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Select the items below in the DATA LIST, and read the displays on the hand-held tester. Standard (Power source control ECU): OK: "ON" (power switch ON (IG)) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
2. INSPECT RELAY (IG1) Remove the IG1 relay from the instrument panel J/B assy. Measure the resistance. Standard: STANDARD CONDITION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 --> (when battery voltage is applied to terminals 1 and 2) NG: REPLACE RELAY OK: Go to next step.
3. CHECK WIRE HARNESS (INSTRUMENT PANEL J/B ASSY - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the 1J and 1E instrument panel J/B assy connectors. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard: TABLE STANDARD CONDITION Tester Connection Specified Condition 1J-3 - P6-34 (IG1D) Below 1 ohms 1J-3 or P6-34 - 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 INSTRUMENT PANEL JUNCTION BLOCK ASSY Remove the IG1 relay from the instrument panel J/B assy. Disconnect the 1J and 1E instrument panel J/B assy connector. Measure the resistance of the instrument panel J/B assy. Standard: STANDARD CONDITION Tester Connection Specified Condition 1J-3 - Instrument panel J/B assy IG1 relay terminal 2 Below 1 ohms 1E-17 - Instrument panel J/B assy IG1 relay terminal 1 Below 1 ohms NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY OK: REPLACE POWER SOURCE CONTROL ECU

This DTC is output when the IG output circuit from the inside of the power source control ECU to the IG2 relay is malfunctioning.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON"(power switch ON (IG)) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
2. CHECK WIRE HARNESS (ENGINE ROOM J/B - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the 3I J/B connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard: STANDARD CONDITION 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 J/B Measure the resistance. Standard: STANDARD CONDITION Tester Connection Condition Specified Condition 3K-1 - 31-4 When battery voltage is not applied to terminals 31-2 and 31-3 10 kohms or higher 3K-1 - 31-4 When battery voltage is not applied to terminals 31-2 and 31-3 Below 1 ohms NG: REPLACE ENGINE ROOM J/B OK: REPLACE POWER SOURCE CONTROL ECU

This DTC is output when the ACC output circuit from the inside of the power source control ECU to the ACC relay is malfunctioning.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON"(power switch ON (ACC)) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
2. INSPECT RELAY (ACC) Remove the ACC relay. Measure the resistance. Standard: STANDARD CONDITION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 --> (when battery voltage is applied to terminals 1 and 2) NG: REPLACE 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: STANDARD CONDITION 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.

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1. CHECK DTCS Clear the DTC (see «DTC CHECK/CLEAR»(ref-182906-S25320395432005081100000) ). Check for DTCs again. OK: No DTC is output. NG: Go to step 2 OK: END
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HYBRID VEHICLE CONTROL ECU AND BODY GROUND) Disconnect the P6 and H14 ECU connectors. Measure the resistance of the wire harness side connectors. Standard: STANDARD CONDITION Tester Connection Specified Condition P6-39 (STSW) - H14-5 (ST2) Below 1 ohms P6-39 (STSW) - 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 (See 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

INSPECTION PROCEDURE

1. CHECK FOR DTCS Delete the DTC (see «DTC CHECK/CLEAR»(ref-182906-S25320395432005081100000) ). Check for DTCs again. OK: No DTC is output. NG: REPLACE POWER SOURCE CONTROL ECU OK: END

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.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON"(power switches 1 and 2 are ON) appears on the screen NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
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: STANDARD CONDITION 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 higher P11-7 (SS2) or P6-37 (SSW2) - Body ground 10 kohms higher NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: REPLACE POWER SOURCE CONTROL ECU

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

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON"(P signal is ON) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - TRANSMISSION CONTROL ECU AND BODY GROUND) Disconnect the P6 and T4 ECU connectors. Measure the resistance of the wire harness side connectors. Standard: STANDARD: CONDITION Tester Connection Specified Condition P6-5 (P) - T4-8 (PPOS) Below 1 ohms P6-5 (P) - 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 (See SHIFT CONTROL SYSTEM - DIAGNOSIS ) OK: NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

The power source control ECU and the combination meter are connected by a cable and 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 the combination meter.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): STANDARD CONDITION Item Measurement Item/Range (Display) Normal Condition VEHICLE SPD SIG States of the Vehicle Speed Signal / Stop or Run Stop: Vehicle condition is "Stop" Run: Vehicle Condition is "RUN" OK: "STOP"(vehicle condition is stop) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - IG2 CONNECTOR) Disconnect the P6 connector. Disconnect the IG2 connector. Measure the resistance of the wire harness side connectors. Standard: STANDARD: CONDITION Tester Connection Specified Condition P6-19 (SPD) - IG2-14 Below 1 ohms P6-19 (SPD) - 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 COMBINATION METER SYSTEM (See COMBINATION METER - DIAGNOSIS ) 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.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON"(brake pedal depressed) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
2. CHECK WIRE HARNESS (STOP LAMP SWITCH ASSY - POWER SOURCE CONTROL ECU) Disconnect the S16 stop lamp switch connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard: STANDARD: CONDITION Tester Connection Specified Condition S16-1 - P6-1 (STP) Below 1 ohms S16-2 - Body ground 10 to 14 V NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step.
3. CHECK STOP LAMP SWITCH ASSY Remove the stop lamp switch. Measure the switch resistance when the shaft is operated. Standard: STANDARD: CONDITION Tester Connection Condition Specified Condition S16-1 - S16-2 Pressed Below 1 ohms S16-1 - S16-2 Released 10 kohms or higher S16-3 - S16-4 Pressed 10 kohms or higher S16-3 - S16-4 Released Below 1 ohms NG: REPLACE STOP LAMP SWITCH ASSY OK: REPLACE POWER SOURCE CONTROL ECU

The power source control ECU and the hybrid vehicle control ECU are connected by the cable and BEAN.

If the cable information and BEAN information are inconsistent, this DTC will be output.

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1. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON" (power switch is ON) appears on the screen. NG: Go to step 2 OK: REPLACE POWER SOURCE CONTROL ECU
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: CONDITION Tester Connection Specified Condition P6-22 (RDY) - H14-28 (RDY) Below 1 ohms P6-22 (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 (See 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.

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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: CONDITION Tester Connection Specified Condition P6-30 (LIN1) - T5-14 (LIN1) Below 1 ohms P6-30 (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. ECU CHECK TERMINAL Result Proceed to Hybrid system can start normally A Hybrid system cannot start (w/ smart entry system) B Hybrid system cannot start (w/o smart entry system) C OK: Hybrid vehicle control system can start normally. B: Go to ENGINE IMMOBILIZER SYSTEM (w/SMART ENTRY SYSTEM) (See ENGINE IMMOBILIZER SYSTEM (w/SMART ENTRY SYSTEM) ) C Go to ENGINE IMMOBILIZER SYSTEM (w/o SMART ENTRY SYSTEM) (See ENGINE IMMOBILIZER SYSTEM (w/o SMART ENTRY 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 and power switch mode changes to OFF, ON(IG) or ON (ACC) according to the inputs.

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1. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the instrument panel J/B. Remove the AM2 fuse from the engine room J/B. Measure the resistance. Standard: Below 1 ohms NG: REPLACE FUSE OK: Go to next step.
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connectors. Standard: CONDITION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V P6-6 (GND2) - Body ground Below 1 ohms NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step.
3. CHECK FOR DTCS (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 DIAGNOSIS TROUBLE CODE CHART (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-182906-S03179380602005081100000) ) OK: Go to next step.
4. CHECK FOR DTCS (TRANSPONDER KEY ECU) Check for DTCs of the transponder key ECU. TRANSPONDER KEY ECU CHECK TERMINAL Result Proceed to DTCs of transponder key ECU are not output A DTCs of transponder key ECU are output (w/ smart entry system) B DTCs of transponder key ECU are output (w/o smart entry system) C OK: DTCs of the transponder key ECU are not output. B: Go to ENGINE IMMOBILIZER SYSTEM (w/SMART ENTRY SYSTEM) (See ENGINE IMMOBILIZER SYSTEM (w/SMART ENTRY SYSTEM) ) C: Go to ENGINE IMMOBILIZER SYSTEM (w/o SMART ENTRY SYSTEM) (See ENGINE IMMOBILIZER SYSTEM (w/o SMART ENTRY SYSTEM) ) A: Go to next step.
5. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester to (with CAN VIM) the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON" (key is in key slot) appears on the screen. NG: Go to step 6 OK: Go to step 8
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 and voltage of the wire harness side connectors. Standard: CONDITION 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 terminals. Standard: CONDITION 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 HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and press the hand-held tester main switch ON. Read the DATA LIST according to the displays on the tester. Standard (Power source control ECU): OK: "ON" (power switch ON) appears on the screen. NG: Go to step 9 OK: REPLACE POWER SOURCE CONTROL ECU
9. CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU) Disconnect the P11 power switch connector. Disconnect the P6 ECU connector. Measure the resistance between the wire harness side connectors and body ground. Standard: CONDITION Tester Connection Specified Condition P11-8 (SS1) - P6-14 (SSW1) Below 1 ohms P11-7 (SS2) - P6-37 (SSW2) Below 1 ohms P11-6 (GND) - Body ground Below 1 ohms P11-8 (SS1) 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.
10. INSPECT POWER SWITCH Remove the P11 power switch. Measure the resistance between the terminals of the connectors. Standard: CONDITION TERMINAL Tester Connection Switch Condition Specified Condition P11-7 (SSW2) - P11-6 (GND) Pushed Below 1 ohms P11-8 (SSW1) - P11-6 (GND) Pushed Below 1 ohms P11-7 (SSW2) - P11-6 (GND) Release 10 kohms or higher P11-8 (SSW1) - P11-6 (GND) Release 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 and power switch mode changes to OFF, ON(IG) or ON (ACC) according to the inputs.

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1. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the instrument panel J/B assy. Remove the AM2 fuse from the engine room J/B. Measure the resistance. Standard: Below 1 ohms NG: REPLACE FUSE OK: Go to next step.
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connectors. Standard: CONDITION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V P6-6 (GND2) - Body ground Below 1 ohms NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step.
3. CHECK FOR DTCS Check for DTCs of the power source control ECU. OK: DTCs of the power source control ECU are not output. NG: Go to DIAGNOSIS TROUBLE CODE CHART (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-182906-S03179380602005081100000) ) OK: Go to next step.
4. INSPECT RELAY (ACC) Remove the ACC relay. Measure the resistance. Standard: CONDITION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 --> (when battery voltage is applied to terminals 1 and 2) NG: REPLACE 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: CONDITION 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. INSPECT POWER SOURCE CONTROL ECU Remove the power source control ECU. Measure the voltage between the terminal of the connector and body ground. Standard: CONDITION 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 0 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). POWER SOURCE CONTROL ECU CHECK RESULT Result Proceed to Power switch can be set to ON (ACC) A Power switch cannot be set to ON (ACC) (w/ smart entry system) B Power switch cannot be set to ON (ACC) (w/o smart entry system) C B: Go to ENGINE IMMOBILIZER SYSTEM (w/ SMART ENTRY SYSTEM) (See ENGINE IMMOBILIZER SYSTEM (w/SMART ENTRY SYSTEM) ) C: Go to ENGINE IMMOBILIZER SYSTEM (w/o SMART ENTRY SYSTEM) (See ENGINE IMMOBILIZER SYSTEM (w/o SMART ENTRY 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 and power switch mode changes to OFF, ON (IG) or ON (ACC) according to the inputs.

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1. INSPECT FUSE (AM1, AM2) Remove the AM1 fuse from the instrument panel J/B assy. Remove the AM2 fuse from the engine room J/B. Measure the resistance. Standard: Below 1 ohms NG: REPLACE FUSE OK: Go to next step.
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the P6 ECU connector. Measure the resistance and voltage of the wire harness side connectors. Standard: CONDITION Tester Connection Specified Condition P6-33 (AM1) - Body ground 10 to 14 V P6-12 (AM2) - Body ground 10 to 14 V P6-6 (GND2) - Body ground Below 1 ohms NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step.
3. CHECK FOR DTCS Check for DTCs of the power source control ECU. OK: DTCs of the power source control ECU are not output. NG: Go to DIAGNOSIS TROUBLE CODE CHART (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-182906-S03179380602005081100000) ) OK: Go to next step.
4. INSPECT RELAY (IG1) Remove the IG1 relay from the instrument panel J/B. Measure the resistance. Standard: CONDITION Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 --> (when battery voltage is applied to terminals 1 and 2) NG: REPLACE RELAY OK: Go to next step.
5. CHECK WIRE HARNESS (DRIVER SIDE J/B ASSY - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the 1J and 1E J/B connectors. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard: CONDITION 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. CHECK DRIVER SIDE J/B Disconnect the 1J and 1E instrument panel J/B assy connector. Remove IG1 relay from driver side J/B. Standard: CONDITION Tester Connection Specified Condition 1J-3 - Instrument panel J/B assy IG1 relay terminal 2 Below 1 ohms Instrument panel J/B assy IG1 relay terminal 2 - Body ground 10 kohms or higher 1E-17 - Instrument panel J/B assy IG1 relay terminal 2 Below 1 ohms NG: REPLACE DRIVER SIDE J/B OK: Go to next step.
7. CHECK WIRE HARNESS (ENGINE ROOM J/B ASSY - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the 3I J/B connectors. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard: CONDITION 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 Below 1 ohms NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step.
8. CHECK POWER SOURCE CONTROL ECU Measure the voltage when the power switch is pushed. Standard: CONDITION Tester Connection Switch Condition Specified Condition P6-34 (IG1D) - Body ground ON (ACC) 0 V P6-35 (IG2D) - Body ground ON (ACC) 0 V P6-34 (IG1D) - Body ground ON (IG) 10 to 14 V P6-35 (IG2D) - Body ground ON (IG) 10 to 14 V NG: REPLACE POWER SOURCE CONTROL ECU OK: Go to next step.
9. CHECK ENGINE ROOM J/B Measure the voltage when the power switch is operated. Standard: CONDITION TERMINAL Tester Connection Condition Specified Condition 3I-4 - Body ground ON (IG) 10 to 14 V NG: REPLACE ENGINE ROOM J/B 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). POWER SOURCE CONTROL ECU RESULT Result Proceed to Power switch cannot be set to ON (IG) (w/ smart entry system) A Power switch cannot be set to ON (IG) (w/o smart entry system) B B: Go to HYBRID CONTROL SYSTEM (See HYBRID CONTROL 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 and power switch mode changes to OFF, ON (IG) or ON (ACC) or according to the inputs.

When the shift position is in 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 starts operating.

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1. INSPECT BASIC OPERATION Check that the shift 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 not depressed at this time. OK: Hybrid vehicle control system starts normally (power switch can be set to ON (READY)). NG: Go to step 2 OK: END
2. CHECK OPERATION OF POWER SWITCH Check that the power mode can be changed by pushing the power switch. HINT: Without depressing the brake pedal, push the power switch repeatedly. Power mode should change as follows: OFF, ON (ACC), ON (IG) and OFF. With the brake pedal depressed, push the power switch repeatedly. Power mode should change as follows: OFF, ON (ACC), ON (IG), ON (READY) and OFF. NG: OTHER PROBLEM (See «PROBLEM SYMPTOMS TABLE»(ref-182906-S06245469192005081100000) ) OK: Go to next step.
3. CHECK FOR DTCS Check for DTCs of the power source control ECU. OK: DTCs of the power source control ECU are not out put NG: Go to DIAGNOSIS TROUBLE CODE CHART (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-182906-S03179380602005081100000) ) OK: Go to next step.
4. READ VALUE OF HAND-HELD TESTER Connect the hand-held tester (with CAN VIM) to the DLC3. Turn the power switch ON (IG) and push the hand-held tester main switch ON. Read the DATA LIST according to the display on the tester. Standard (Power source control ECU): OK: "ON" (stop lamp switch ON) appears on the screen. NG: Go to step 5 OK: Go to next step 8 .
5. CHECK POWER SOURCE CONTROL ECU Measure the voltage when the brake pedal is operated. Standard: CONDITION Tester Connection Condition Specified Condition P6-1 (STP) - Body ground Brake pedal released 10 to 14 V P6-1 (STP)Body ground Brake pedal pressed 0 V NG: Go to step 6 OK: REPLACE POWER SOURCE CONTROL ECU
6. CHECK STOP LAMP SWITCH ASSY Remove the stop lamp assy. Measure the switch resistance when the shaft is operated. Standard: CONDITION Tester Connection Condition Specified Condition S16-1 - S16-2 Brake pedal pressed Below 1ohms S16-1 - S16-2 Brake pedal released 10 kohms or higher S16-3 - S16-4 Brake pedal pressed 10 kohms or higher S16-3 - S16-4 Brake pedal released Below 1ohms NG: REPLACE STOP LAMP SWITCH ASSY OK: Go to next step.
7. CHECK WIRE HARNESS (STOP LAMP SWITCH ASSY - POWER SOURCE CONTROL ECU) Disconnect the S16 switch connector. Disconnect the P6 ECU connector. Measure the resistance of the wire harness side connectors. Standard: CONDITION Tester Connection Specified Condition S16-1 - P6-1 (STP) Below 1 ohms S16-1 or P6-1 (STP) - Body ground 10 kohms or higher NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: REPLACE POWER SOURCE CONTROL ECU
8. CHECK FOR DTCS Check for DTCs of the hybrid control ECU. OK: DTCs of the hybrid control ECU are not output NG: Go to HYBRID CONTROL SYSTEM (See HYBRID CONTROL SYSTEM ) OK: REPLACE POWER SOURCE CONTROL ECU

Scheme 85

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 the vehicles with the smart entry system, the power switch functions not only when the key is inserted in to the key slot but also when the driver carries the key. BRAKE PEDAL SWITCH MODE 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 KEY INTERLOCK FUNCTION Insert the key into 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. SHIFT POSITION KEY STATUS 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 LIGHT CONDITION Check the power indicator on the power switch. Check that the power indicator illuminates and changes its color according to the table below. INDICATOR STATUS Power Switch Mode Indicator Status OFF OFF ACC Green illumination IG (ON) Amber illumination Hybrid System ON OFF Push button start system malfuning Flashes continuously in amber