STOP AND START SYSTEM(for 3ZR-FAE), Diagnostic DTC:P0617

DTC Code DTC Name
P0617 Starter Relay Circuit High

DESCRIPTION

  • for CVT:

    When the engine is started by stop and start control, the engine stop and start ECU controls the starter assembly by activating the ST NO. 1 relay (for starter pinion operation) via voltage from terminal STA and then, using its built-in starter delay circuit, activating the ST NO. 2 relay (for starter motor operation) via voltage from terminal STA2.

  • for Manual Transaxle:

    When the engine is started by stop and start control, the engine stop and start ECU controls the starter assembly by activating the ST NO. 1 relay via voltage from terminal STA.

If overcurrent is detected in the starter relay circuit, the engine stop and start ECU stores DTC P0617 and blinks the stop and start cancel indicator light.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

P0617

Starter Relay Circuit High

Both of the following conditions are met for 1 second (1 trip detection logic):

  • Ignition switch ON

  • Overcurrent to ST NO. 1 relay or ST NO. 2 relay is detected.

  • Wire harness or connector

  • for CVT:

    • ST NO. 1 relay

    • ST NO. 2 relay

  • for Manual Transaxle:

    • ST NO. 1 relay

  • Engine stop and start ECU

Blinks

DTC stored

CONFIRMATION DRIVING PATTERN

Tip:

DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

Click here

  1. Tip:

    • If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 60 minutes until refresh charge is completed and stop and start control operation is permitted.

    • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.

    CONFIRMATION AFTER TROUBLESHOOTING

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Click here

      Powertrain > Stop and Start > Clear DTCs

    4. Start the engine and warm it up.

    5. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

    6. for CVT:

      Depress the brake pedal and stop the vehicle.

      for Manual Transaxle:

      Stop the vehicle, move the shift lever to neutral and release the clutch pedal.

    7. Keep the engine stopped by stop and start control for 1 second or more. (for CVT: Keep the shift lever in D.)

    8. for CVT:

      Release the brake pedal with the shift lever in D to start the engine.

      for Manual Transaxle:

      Depress the clutch pedal and start the engine.

      Tip:

      If the engine cranks slowly when the engine is restarted, it can be determined that the battery voltage is low.

    9. Check that DTCs are not output.

      Click here

      Powertrain > Stop and Start > Trouble Codes

  2. STOP AND START SYSTEM OPERATION CHECK

    Tip:

    If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 60 minutes until refresh charge is completed and stop and start control operation is permitted.

    1. Start the engine and warm it up.

    2. Turn the air conditioning system off.

    3. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

    4. for CVT:

      Depress the brake pedal and stop the vehicle.

      for Manual Transaxle:

      Stop the vehicle, move the shift lever to neutral and release the clutch pedal.

    5. Allow the engine to stop by stop and start control. (for CVT: Keep the shift lever in D.)

    6. for CVT:

      Release the brake pedal with the shift lever in D to start the engine.

      for Manual Transaxle:

      Depress the clutch pedal and start the engine.

WIRING DIAGRAM

  1. for CVT:

  2. for Manual Transaxle:

    A375327E01
    A375328E01
A375325E01
A375326E01

CAUTION / NOTICE / HINT

Note:

  • for CVT:

    When replacing the engine stop and start ECU with a new one, make sure to download the previous status (number of starter operations) of the old engine stop and start ECU. After replacing the engine stop and start ECU, turn the ignition switch to ON and wait 20 seconds, then confirm that "OK" is displayed for the Data List item "Oper Prohibition (O/P Air Bleeding)". Then upload the previous status (number of starter operations) to the engine stop and start ECU.

    Click here

  • for Manual Transaxle:

    Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or airbag sensor assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

Tip:

Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

Click here

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BBC, BBC NO. 2 FUSE)

    1. Disconnect the A86 engine stop and start ECU connector.

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

    3. Remove the BBC NO. 2 fuse from the engine room relay block and junction block assembly.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A86-1 (BIN2) - BBC NO. 2 fuse terminal 2

      Always

      Below 1 Ω

      A86-3 (BIN1) - BBC fuse terminal 2

      Always

      Below 1 Ω

      A86-1 (BIN2) - Body ground

      Always

      10 kΩ or higher

      A86-3 (BIN1) - Body ground

      Always

      10 kΩ or higher

      BBC fuse terminal 2 - Body ground

      Always

      10 kΩ or higher

      BBC NO. 2 fuse terminal 2 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1, ST NO. 2 RELAY)

    1. w/ Entry and Start System:

      Disconnect the G82 certification ECU (smart key ECU assembly) connector.

    2. for CVT:

      Disconnect the B36 park/neutral position switch assembly connector.

    3. Disconnect the A62 ECM connector.

    4. Disconnect the A86 and A66 engine stop and start ECU connectors.

    5. for CVT:

      Remove the ST NO. 1 relay and ST NO. 2 relay from the No. 2 engine room relay block and junction block assembly.

    6. for Manual Transaxle:

      Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.

    7. Remove the BBC fuse and BBC NO. 2 fuse from the engine room relay block and junction block assembly.

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

      Standard Resistance

      Table 1. for CVT:

      Tester Connection

      Condition

      Specified Condition

      A66-21 (STA) - ST NO. 1 relay terminal 1

      Always

      Below 1 Ω

      A66-23 (STA2) - ST NO. 2 relay terminal 1

      Always

      Below 1 Ω

      A66-21 (STA) - Body ground

      Always

      10 kΩ or higher

      ST NO. 1 relay terminal 1 - Body ground

      Always

      10 kΩ or higher

      A66-23 (STA2) - Body ground

      Always

      10 kΩ or higher

      ST NO. 2 relay terminal 1 - Body ground

      Always

      10 kΩ or higher

      A86-1 (BIN2) - A66-21 (STA)

      Always

      10 kΩ or higher

      A86-3 (BIN1) - A66-21 (STA)

      Always

      10 kΩ or higher

      A86-1 (BIN2) - A66-23 (STA2)

      Always

      10 kΩ or higher

      A86-3 (BIN1) - A66-23 (STA2)

      Always

      10 kΩ or higher
      Table 2. for Manual Transaxle:

      Tester Connection

      Condition

      Specified Condition

      A66-21 (STA) - ST NO. 1 relay terminal 2

      Always

      Below 1 Ω

      A66-21 (STA) - Body ground

      Always

      10 kΩ or higher

      ST NO. 1 relay terminal 2 - Body ground

      Always

      10 kΩ or higher

      A86-1 (BIN2) - A66-21 (STA)

      Always

      10 kΩ or higher

      A86-3 (BIN3) - A66-21 (STA)

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK ENGINE STOP AND START ECU

    1. Disconnect the A66 engine stop and start ECU connector.

      A350843C02

      *a

      Component without harness connected

      (Engine Stop and Start ECU)

      -

      -

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

      Standard Resistance

      Table 3. for CVT:

      Tester Connection

      Condition

      Specified Condition

      A66-21 (STA) - A66-6 (DGND)

      Always

      10 kΩ or higher

      A66-23 (STA2) - A66-6 (DGND)

      Always

      10 kΩ or higher
      Table 4. for Manual Transaxle:

      Tester Connection

      Condition

      Specified Condition

      A66-21 (STA) - A66-6 (DGND)

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ENGINE STOP AND START ECU

    Click here

    OK

  4. INSPECT RELAY (ST NO. 1, ST NO. 2 RELAY)

    1. for CVT:

      Inspect the ST NO. 1 relay and ST NO. 2 relay.

      Click hereClick here

    2. for Manual Transaxle:

      Inspect the ST NO. 1 relay.

      Click hereClick here

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    NG

    REPLACE RELAY (ST NO. 1, ST NO. 2 RELAY)