STOP AND START SYSTEM, Diagnostic DTC:P1603

DESCRIPTION

If the engine stalls or engine start fails while the stop and start control is operating, DTC P1603 is stored. Using the GTS, the freeze frame data recorded the moment the DTC is stored can be read. Serviceability has been enhanced by enabling the cause of an engine stall or engine start failure which occurred while the stop and start control was operating to be checked using the freeze frame data.

• *1: Since each information can be confirmed by freeze frame data, record the freeze frame data before deleting the diagnosis code.

• *2: Only when the shift lever is in D or M

• *3: The mode "stalled" represents a state in which engine restart is prohibited/canceled due to a collision being detected or the engine hood being opened and restart is not preferable. In this situation, "IG" is displayed for the Data List item [Stop & Start of Eng State]. If the mode changes to "IG", engine start by stop and start control is prohibited and the engine can only be started by operating the ignition switch.

• *4: Engine stop judgment is performed to judge whether the engine is stopped completely. The engine stop and start ECU judges that the engine is stopped when it does not receive an engine speed signal (NE signal) from the ECM for 0.6 seconds or more.

• *5: The engine stop and start ECU stores DTC P0335.

WIRING DIAGRAM

• Refer to Engine Hood Courtesy Switch Circuit (Click here).

• Refer to DTC P0617 (Click here).

CAUTION / NOTICE / HINT

Click here

PROCEDURE

1. Click here

   CHECK SPECIFICATIONS

   
   

   1. Check the vehicle specifications.

      Table 1. Result

      Result	Proceed to
      for 2NR-FKE, 1KR-FE	A
      for 1ND-TV	B

   
   
   • AClick here
   • BClick here
2. Click here

   CHECK DTC OUTPUT (SFI SYSTEM)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes

   5. Read the DTCs.

      Table 2. Result

      Result	Proceed to
      DTCs other than SFI system DTC 1604 are output	A
      SFI system DTCs are output	B
      SFI system DTC 1604 is output and starter assembly does not operate
      SFI system DTC 1604 is output and starter assembly operates (for 2NR-FKE)	C
      SFI system DTC 1604 is output and starter assembly operates (for 1KR-FE)	D

      
      

      • According to the display on the GTS, check the freeze frame data item [Cranking Time] in the sets of freeze frame data.

      • If the value of [Cranking Time] is approximately 3 seconds, the stop and start control system or starter system may be malfunctioning.

      • If the value of [Cranking Time] is small (approximately 0.5 seconds or less: the minimum value varies depending on the model), the SFI system may be malfunctioning.

      • The Data List item [Cranking Time] indicates the length of time starter operation is requested by the engine stop and start ECU. If the engine speed exceeds the specified value, the engine stop and start ECU cancels its start request.

   
   
   • A

     GO TO DTC CHART

   • BClick here
   • C

     GO TO SFI SYSTEM (Click here)

   • D

     GO TO SFI SYSTEM (Click here)

3. Click here

   CHECK DTC OUTPUT (ECD SYSTEM)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Engine and ECT/ Trouble Codes

   5. Read the DTCs.

      Table 3. Result

      Result	Proceed to
      ECD system DTCs are output	A
      ECD system DTC 1604 is output and starter assembly does not operate
      ECD system DTC 1604 is output and starter assembly operates (for 1ND-TV)	B
      DTCs other than ECD system DTC 1604 are output	C

      
      

      • According to the display on the GTS, check the freeze frame data item [Cranking Time] in the sets of freeze frame data.

      • If the value of [Cranking Time] is approximately 3 seconds, the stop and start control system or starter system may be malfunctioning.

      • If the value of [Cranking Time] is small (approximately 0.5 seconds or less: the minimum value varies depending on the model), the ECD system may be malfunctioning.

      • The Data List item [Cranking Time] indicates the length of time starter operation is requested by the engine stop and start ECU. If the engine speed exceeds the specified value, the engine stop and start ECU cancels its start request.

   
   
   • AClick here
   • B

     GO TO ECD SYSTEM (Click here)

   • C

     GO TO DTC CHART

4. Click here

   CHECK FREEZE FRAME DATA

   Note:

   The freeze frame data is cleared when DTCs are cleared. Be sure to make a note of necessary data in advance.

   Tip:

   Using the time-series freeze frame data, confirm the freeze frame data recorded the moment the DTC was stored and after the DTC was stored. This information can be useful when troubleshooting.

   
   

   1. According to the prompts on the GTS screen, read the time-series freeze frame data to confirm the vehicle conditions when an engine stall occurred while the stop and start control was operating.

   2. Check the freeze frame data for engine stall history and engine start failure.

      Table 4. Result

      Tester Display	Result	Result
      Engine Stall History during S&S (Hood Open)	Yes	A
      Engine Stall History during S&S (Collision or Battery Voltage Low)	Yes	B
      Engine Stall History during Engine Starting (Collision)	Yes
      Engine Start Fail	Yes (for CVT)	C
      	Yes (for Manual Transaxle)	D

   
   
   • AClick here
   • BClick here
   • CClick here
   • DClick here
5. Click here

   READ VALUE USING GTS (HOOD COURTESY SWITCH)

   Note:

   Before performing this step, check that the engine hood can be opened by pulling the hood lock control cable.

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Stop and Start / Data List / Hood Courtesy Switch.

   5. Read the value displayed on the GTS when the engine hood is opened and closed.

      OK
      Tester Display Condition Normal Condition Hood Courtesy Switch Engine hood is closed ON Engine hood is open OFF

      Table 5. Result

      Result	Proceed to
      NG	A
      OK	B

   
   
   • AClick here
   • B

     USE SIMULATION METHOD TO CHECK (Click here)

6. Click here

   INSPECT HOOD LOCK ASSEMBLY (ENGINE HOOD COURTESY SWITCH)

   
   

   1. Inspect the hood lock assembly (engine hood courtesy switch) (Click here).

   
   
   • OKClick here
   • NG

     REPLACE HOOD LOCK ASSEMBLY (ENGINE HOOD COURTESY SWITCH)

7. Click here

   CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - BODY GROUND)

   
   

   1. Disconnect the A32 engine hood courtesy switch (hood lock assembly) connector.

   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition A32-1 - Body ground Always Below 1 Ω

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

8. Click here

   CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY))

   
   

   1. Disconnect the A32 engine hood courtesy switch (hood lock assembly) connector.

   2. Disconnect the A92 engine stop and start ECU connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition A92-7 (BNT1) - A32-2 Always Below 1 Ω A92-7 (BNT1) or A32-2 - Body ground Always 10 kΩ or higher

   
   
   • OK

     REPLACE ENGINE STOP AND START ECU (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

9. Click here

   CHECK VEHICLE CONDITION (COLLISION HISTORY)

   
   

   1. Check if the vehicle was in a collision when the engine stalled.

      Table 6. Result

      Result	Proceed to
      Vehicle was not in collision when engine stalled	A
      Vehicle was in collision when engine stalled	B

      Tip:

      When "Engine Stall History during S&S (Collision or Battery Low)" or "Engine Stall History during Engine Starting (Collision)" is stored:

      This may have been stored because the vehicle was in a collision or a collision detection signal was input while the stop and start control was operating.

   
   
   • A

     GO TO AIRBAG SYSTEM (Click here)

   • B

     END (ENGINE STALLED BECAUSE COLLISION DETECTION SIGNAL IS RECEIVE)

10. Click here

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST RELAY AND ST NO. 2 RELAY)

    
    

    1. Disconnect the A91 and A92 engine stop and start ECU connectors.

    2. Disconnect the A58 ECM connector.

    3. Disconnect the A90 power management control ECU connector.

    4. Disconnect the B100 park/neutral position switch connector.

    5. Remove the ST relay from engine room relay block.

    6. Remove the ST NO. 2 relay from No. 2 engine room relay block.

    7. Remove the BBC fuse from engine room relay block and junction block assembly.

    8. Measure the resistance according to the value(s) in the table below.

       Standard Resistance

       Tester Connection Condition Specified Condition A92-21 (STA) - ST relay holder 2 Always Below 1 Ω A92-23 (STA2) - ST NO. 2 relay holder 2 Always Below 1 Ω A92-21 (STA), A90-5 (STA), B100-9 (L) or ST relay holder 2 - Body ground Always Below 1 Ω A92-23 (STA2), A58-29 (STA) or ST NO. 2 relay holder 2 - Body ground Always Below 1 Ω A91-7 (BIN) - A92-21 (STA) Always 10 kΩ or higher A91-7 (BIN) - A92-23 (STA2) Always 10 kΩ or higher

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

11. Click here

    CHECK HARNESS AND CONNECTOR (ST RELAY, ST NO. 2 RELAY - BODY GROUND)

    
    

    1. Remove the ST relay from engine room relay block.

    2. Remove the ST NO. 2 relay from No. 2 engine room relay block.

    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Condition Specified Condition ST relay holder 1 - body ground Always Below 1 Ω ST NO. 2 relay holder 1 - body ground Always Below 1 Ω

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

12. Click here

    CHECK HARNESS AND CONNECTOR (ST RELAY, ST NO. 2 RELAY - BATTERY)

    
    

    1. w/o Pre-crash Safety City Heater

       
       

       1. Remove the ST relay from engine room relay block.

       2. 

          Remove the ST NO. 2 relay from No. 2 engine room relay block.

          Table 7. Text in Illustration

          *1	Engine Room Relay Block	*2	No. 2 Engine Room Relay Block
          *a	ST Relay Holder	*b	ST NO. 2 Relay Holder

       3. Remove the ST NO. 2 relay from No. 2 engine room relay block.

       4. Measure the voltage according to the value(s) in the table below.

          Standard Voltage
          Tester Connection Condition Specified Condition ST relay holder 5 - body ground Always 9.5 to 14 V ST NO. 2 relay holder 5 - body ground Always 9.5 to 14 V

    2. w/ Pre-crash Safety City Heater

       
       

       1. Remove the ST relay from engine room relay block.

       2. 

          Remove the ST NO. 2 relay from No. 2 engine room relay block.

          Table 8. Text in Illustration

          *1	Engine Room Relay Block	*2	No. 2 Engine Room Relay Block
          *a	ST Relay Holder	*b	ST NO. 2 Relay Holder

       3. Remove the ST NO. 2 relay from No. 2 engine room relay block.

       4. Measure the voltage according to the value(s) in the table below.

          Standard Voltage
          Tester Connection Condition Specified Condition ST relay holder 5 - body ground Always 9.5 to 14 V ST NO. 2 relay holder 5 - body ground Always 9.5 to 14 V

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

13. Click here

    CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - BATTERY)

    
    
    1. 

       Measure the voltage according to the value(s) in the table below.

       Standard Voltage
       Tester Connection Condition Specified Condition B53-1 - Body ground Always 9.5 to 14 V

       Table 9. Text in Illustration

       *1	Starter Assembly

       Note:

       Check in advance that the starter assembly connector B53 is not loose or disconnected.

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

14. Click here

    CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - ST RELAY, ST NO. 2 RELAY)

    
    

    1. Remove the ST relay from engine room relay block.

    2. Remove the ST NO. 2 relay from No. 2 engine room relay block.

    3. Disconnect the B99 starter assembly connector.

    4. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Condition Specified Condition ST relay holder 3 - B99-2 (SL1) Always Below 1 Ω ST NO. 2 relay holder 3 - B99-1 (SL2) Always Below 1 Ω

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

15. Click here

    INSPECT ST RELAY

    
    

    1. Inspect the ST relay (Click here).

    
    
    • OKClick here
    • NG

      REPLACE RELAY (ST RELAY)

16. Click here

    INSPECT ST NO. 2 RELAY

    
    

    1. Inspect the ST NO. 2 relay (Click here).

    
    
    • OKClick here
    • NG

      REPLACE RELAY (ST NO. 2 RELAY)

17. Click here

    INSPECT STARTER ASSEMBLY

    
    

    1. Inspect the starter assembly (Click here).

    
    
    • OK

      REPLACE ENGINE STOP AND START ECU (Click here)

    • NG

      REPLACE STARTER ASSEMBLY (Click here)

18. Click here

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST RELAY)

    
    

    1. Disconnect the A91 and A92 engine stop and start ECU connectors.

    2. Disconnect the A58 ECM connector. (for 2NR-FKE)

    3. Disconnect the A93 ECM connector. (for 1KR-FE)

    4. Disconnect the A108 ECM connector. (for 1ND-TV)

    5. Disconnect the A90 power management control ECU connector.

    6. Disconnect the A39 clutch start switch assembly (for lower) connector.

    7. Remove the ST relay from engine room relay block.

    8. Remove the BBC fuse from engine room relay block and junction block assembly.

    9. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Table 10. for 2NR-FKE Tester Connection Condition Specified Condition A92-21 (STA) - ST relay holder 2 Always Below 1 Ω A92-21 (STA), A90-5 (STA), A58-29 (STA) or ST relay holder 2 - Body ground Always Below 1 Ω A91-7 (BIN) - A92-21 (STA) Always 10 kΩ or higher
       Table 11. for 1KR-FE Tester Connection Condition Specified Condition A92-21 (STA) - ST relay holder 2 Always Below 1 Ω A92-21 (STA), A90-5 (STA), A93-46 (STA) or ST relay holder 2 - Body ground Always Below 1 Ω A91-7 (BIN) - A92-21 (STA) Always 10 kΩ or higher
       Table 12. for 1ND-TV Tester Connection Condition Specified Condition A92-21 (STA) - ST relay holder 2 Always Below 1 Ω A92-21 (STA), A90-5 (STA), A108-53 (STA) or ST relay holder 2 - Body ground Always Below 1 Ω A91-7 (BIN) - A92-21 (STA) Always 10 kΩ or higher

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

19. Click here

    CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND)

    
    

    1. Remove the ST relay from engine room relay block.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Condition Specified Condition ST relay holder 1 - body ground Always Below 1 Ω

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

20. Click here

    CHECK HARNESS AND CONNECTOR (ST RELAY - BATTERY)

    
    
    1. 

       Remove the ST relay from engine room relay block.

       Table 13. Text in Illustration

       *1	Engine Room Relay Block
       *a	ST Relay Holder

    2. Measure the voltage according to the value(s) in the table below.

       Standard Voltage
       Tester Connection Condition Specified Condition ST relay holder 5 - body ground Always 9.5 to 14 V

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

21. Click here

    CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - BATTERY)

    
    
    1. 

       Measure the voltage according to the value(s) in the table below.

       Table 14. Text in Illustration

       *A	for 2NR-FKE	*B	for 1KR-FE
       *C	for 1ND-TV	-	-
       *1	Starter Assembly	-	-

       Standard Voltage
       Tester Connection Condition Specified Condition B53-1 - Body ground*1 Always 9.5 to 14 V C1-1 - Body ground*2 Always 9.5 to 14 V

       Note:

       Check in advance that the starter assembly connector B53*1 and C1*2 are not loose or disconnected.

       
       

       • *1: for 2NR-FKE, 1KR-FE

       • *2: for 1ND-TV

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

22. Click here

    CHECK HARNESS AND CONNECTOR (ST RELAY - STARTER ASSEMBLY)

    
    

    1. Remove the ST relay from engine room relay block.

    2. Disconnect the B1 starter assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Condition Specified Condition ST relay holder 3 - B1-1 (SL1) Always Below 1 Ω

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

23. Click here

    INSPECT RELAY (ST RELAY)

    
    

    1. Inspect the ST relay (for 2NR-FKE) (Click here).

    2. Inspect the ST relay (for 1KR-FE) (Click here).

    3. Inspect the ST relay (for 1ND-TV) (Click here).

    
    
    • OKClick here
    • NG

      REPLACE RELAY (ST RELAY)

24. Click here

    INSPECT STARTER ASSEMBLY

    
    

    1. Inspect the starter assembly (for 2NR-FKE) (Click here).

    2. Inspect the starter assembly (for 1KR-FE) (Click here).

    3. Inspect the starter assembly (for 1ND-TV) (Click here).

       Table 15. Result

       Result	Proceed to
       OK	A
       NG (for 2NR-FKE)	B
       NG (for 1KR-FE)	C
       NG (for 1ND-TV)	D

    
    
    • A

      REPLACE ENGINE STOP AND START ECU (Click here)

    • B

      REPLACE STARTER ASSEMBLY (Click here)

    • C

      REPLACE STARTER ASSEMBLY (Click here)

    • D

      REPLACE STARTER ASSEMBLY (Click here)