Toyota CH-R Service Manual: Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS

CHECK FOR INTERMITTENT PROBLEMS

HINT:

A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the Data List function of the Techstream.

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Follow the directions on the Techstream to display the Data List and select areas where momentary interruption should be monitored.

HINT:

  • A momentary interruption (open circuit) cannot be detected for 3 seconds after the ignition switch is turned to ON (initial check).
  • If Error remains displayed for one of the items on the Techstream, check for continuity between the ECU and the item for which Error is displayed.
  • If a momentary interruption occurs and Error is displayed on the Techstream, Error will remain displayed on the Techstream for 1 second after the circuit returns to normal.
Chassis > ABS/VSC/TRAC/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

EFI Communication Open

EFI communication open detection

Error or Normal

Error: Momentary interruption

Normal: Normal

-

Yaw Rate Open

Yaw rate sensor open detection

Error or Normal

Error: Momentary interruption

Normal: Normal

-

Deceleration Open

Acceleration sensor open detection

Error or Normal

Error: Momentary interruption

Normal: Normal

-

Steering Open

Steering angle sensor open detection

Error or Normal

Error: Momentary interruption

Normal: Normal

-

IG Voltage Value Decreased

+BS voltage value decrease detection

Error or Normal

Error: Voltage low

Normal: Normal

-

IG Voltage Value Increased

+BS voltage value increase detection

Error or Normal

Error: Voltage high

Normal: Normal

-

(f) While observing the screen, gently jiggle the connector or wire harness between the ECU and sensors, or between ECUs.

OK:

Normal is displayed.

HINT:

If the display changes, this indicates that there has been a momentary interruption (open circuit) in the connector and/or wire harness. In this case, repair or replace the connectors and/or wire harnesses as one of them is faulty.

    System Description
    SYSTEM DESCRIPTION FUNCTION DESCRIPTION (a) Enhanced-VSC (1) Effects cooperative control with the power steering ECU assembly in order to provide steering assist in accordance with the operating ...

    How To Proceed With Troubleshooting
    CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT ...

    Other materials:

    Toyota CH-R Service Manual > Window Defogger System: Parts Location
    PARTS LOCATION ILLUSTRATION *1 DEF RELAY *2 BACK DOOR GLASS (REAR WINDOW DEFOGGER WIRE) *3 NO. 1 ENGINE ROOM RELAY BLOCK *4 DEF FUSE ILLUSTRATION *A for TMMT Made ...

    Toyota CH-R Service Manual > Maintenance: Front Turn Signal Light Bulb
    Components COMPONENTS ILLUSTRATION *1 FRONT TURN SIGNAL LIGHT BULB *2 FRONT TURN SIGNAL LIGHT SOCKET AND WIRE SUB-ASSEMBLY Removal REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The ...

    © 2017-2019 Copyright www.tochr.net
    0.0326