2010 Scion tC AutomaticFACTORY OEM SERVICE PROCEDURE

Test Mode Procedure

  1. ABS WARNING LIGHT 
    1. The ABS warning light operates as listed below.
      Fig 1: Identifying ABS And Brake Warning Lights
      GTY157040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. It comes ON when the ignition switch is ON.
      2. After that, it goes OFF in 3 seconds.
  2. BRAKE WARNING LIGHT 
    1. The BRAKE warning light operates as listed below.
      1. It comes ON when the ignition switch is ON and the parking brake is set.
      2. It comes ON when the ignition switch is ON and the brake fluid level of the reservoir tank is lower than the low level.
      3. It goes OFF when the parking brake is not set.
  3. TEST MODE FOR VEHICLE SPEED SENSOR SIGNAL (WITH TECHSTREAM) 

    HINT: 

    The manufacturer uses the test mode to check the vehicle speed sensor operation.

    1. Connect the Techstream to the DLC3.
    2. Allow the engine to idle.
    3. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Signal Check.
    4. Check that the ABS warning light is blinking in test mode.
    5. Drive the vehicle straightforward at 55 km/h (34 mph) or higher for several seconds. Then, do not turn the steering wheel and do not spin the wheels. The ABS warning light will go off when the signal check is complete.
    6. Stop the vehicle and do not turn the ignition switch OFF.
    7. Check the DTCs.

    If DTCs are set, perform the inspection procedure depends on DTCs.

    DTC OF SPEED SENSOR CHECK FUNCTION

    DTC* Problem Related DTC See
    C1271 Low output voltage of right front speed sensor C0200 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    C1272 Low output voltage of left front speed sensor C0205 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    C1273 Low output voltage of right rear speed sensor C0210 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
    C1274 Low output voltage of left rear speed sensor C0215 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
    C1275 Abnormal change in output voltage of right front speed sensor C1235 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    C1276 Abnormal change in output voltage of left front speed sensor C1236 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    C1277 Abnormal change in output voltage of right rear speed sensor C1238 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
    C1278 Abnormal change in output voltage of left rear speed sensor C1239 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

    HINT: 

    *: These DTCs are set while the signal check mode only.

  4. TEST MODE FOR VEHICLE SPEED SENSOR SIGNAL (WITHOUT TECHSTREAM) 

    HINT: 

    The manufacturer uses the test mode to check the vehicle speed sensor operation.

    1. Allow the engine to idle.
      Fig 2: Identifying DLC Connector Terminals
      GTY158996Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3. The ABS warning light will blink.
      • SST: 09843-18040 
      Fig 3: ABS Warning Light Blinking Pattern
      GTY158998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Drive the vehicle straightforward at 55 km/h (34 mph) or higher for several seconds. Then, do not turn the steering wheel and do not spin the wheels. The ABS warning light will go OFF when the signal check is complete.
    4. Stop the vehicle and do not turn the ignition switch OFF.
    5. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
      Fig 4: Identifying DLC Connector Terminals
      GTY158996Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09843-18040 
    6. Count the number of the ABS warning light blinks to check DTCs.
      Fig 5: ABS Warning Light Blinking Pattern
      GTY158999Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If DTCs are set, perform the inspection procedure depending on DTCs.

    DTC OF SPEED SENSOR CHECK FUNCTION

    DTC* Problem Related DTC See
    71 Low output voltage of right front speed sensor 31 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    72 Low output voltage of left front speed sensor 32 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    73 Low output voltage of right rear speed sensor 33 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
    74 Low output voltage of left rear speed sensor 34 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
    75 Abnormal change in output voltage of right front speed sensor 35 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    76 Abnormal change in output voltage of left front speed sensor 36 Refer to DTC C0200/31: Right Front Wheel Speed Sensor Signal Malfunction; DTC C0205/32: Left Front Wheel Speed Sensor Signal Malfunction; DTC C1235/35: Foreign Object is Attached on Tip of Front Speed Sensor RH; DTC C1236/36: Foreign Object is Attached on Tip of Front Speed Sensor LH; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275/75: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276/76: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
    77 Abnormal change in output voltage of right rear speed sensor 38 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
    78 Abnormal change in output voltage of left rear speed sensor 39 Refer to DTC C0210/33: Right Rear Wheel Speed Sensor Signal Malfunction; DTC C0215/34: Left Rear Wheel Speed Sensor Signal Malfunction; DTC C1238/38: Foreign Object is Attached on Tip of Rear Speed Sensor RH; DTC C1239/39: Foreign Object is Attached on Tip of Rear Speed Sensor LH; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277/77: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278/78: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

    HINT: 

    *: These DTCs are set while the signal check mode only.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.