STOP AND START SYSTEM, Diagnostic DTC:P0617

DTC Code DTC Name
P0617 Starter Relay Circuit High

DESCRIPTION

When the stop and start system is activated, the engine stop and start ECU sends starter operation voltage (STA voltage) to the starter relay (ST relay) and controls the starter assembly.

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.

DTC Detection Condition

Trouble Area

P0617

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

  • Ignition switch is turned to ON

  • Overcurrent to ST relay is detected.

  • Wire harness or connector

  • ST relay

  • Engine stop and start ECU

CONFIRMATION DRIVING PATTERN

  1. CONFIRMATION AFTER TROUBLESHOOTING

    Tip:

    • When the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited for a certain amount of time. After connecting the cable, drive the vehicle until stop and start control is permitted (approximately 15 to 40 minutes).

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

    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).

    4. Start the engine and warm it up.

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

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    6. 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.

    8. Depress the clutch pedal and start the engine.

    9. Check that DTCs are not output (Click here).

  2. STOP AND START SYSTEM OPERATION CHECK

    Tip:

    When the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited for a certain amount of time. After connecting the cable, drive the vehicle until stop and start control is permitted (approximately 15 to 40 minutes).

    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 the confirmation driving pattern, obey all speed limits and traffic laws.

    4. 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.

    6. Depress the clutch pedal and start the engine.

WIRING DIAGRAM

A299442E04
A318209E03

CAUTION / NOTICE / HINT

Note:

  • 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 yaw rate sensor, perform deceleration sensor zero point clear and calibration (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 FUSE)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. Disconnect the A73 and A74 engine stop and start ECU connectors.

    2. Disconnect the ECM connector.

    3. w/ Entry and Start System:

      Disconnect the power management control ECU connector.

    4. Disconnect the A4 clutch start switch assembly (for lower) connector.

    5. Remove the ST relay from the No. 3 relay block.

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

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A74-21 (STA) - ST relay terminal 2

      Always

      Below 1 Ω

      A74-21 (STA) - Body ground

      Always

      10 kΩ or higher

      ST relay terminal 2 - Body ground

      Always

      10 kΩ or higher

      A73-7 (BIN) - A74-21 (STA)

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK ENGINE STOP AND START ECU

    1. Disconnect the engine stop and start ECU connector.

      U122116E01
      Table 1. Text in Illustration

      *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

      Tester Connection

      Condition

      Specified Condition

      A74-21 (STA) - A73-8 (GND)

      Always

      10 kΩ or higher

    REPLACE ENGINE STOP AND START ECU

    (Click here)

  4. INSPECT RELAY (ST RELAY)

    1. Inspect the ST relay (Click here).

    USE SIMULATION METHOD TO CHECK

    (Click here)

    REPLACE RELAY (ST RELAY)