Toyota CH-R Service Manual: Improper Operation

DESCRIPTION

When the theft deterrent system operates by itself, it could be due to something such as a short circuit in the courtesy light switch of any of the doors or the hood causing a signal to be sent in error.

HINT:

Preconditions for Arming Preparation:

  • The ignition switch is off and all the doors and the hood are closed and all doors are locked by wireless operation or entry operation*1.
    • *1: w/ Smart Key System

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

NOTICE:

  • Before replacing the main body ECU (multiplex network body ECU), refer to REGISTRATION*1.

    Click here

    *1: w/ Smart Key System

  • The theft deterrent system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the theft deterrent system after confirming that the communication systems are functioning properly.

    Click here

  • When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read out and saved, the operation history information could be lost.
  • The function "Read operation history" uses the current system time setting inside the Techstream and the time counter inside the controlling ECU to calculate the timings shown in the operation history. For this reason, before reading out the operation history, first make sure that the Techstream system clock is accurately set to the current time.

PROCEDURE

1.

CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CONFIRMATION

HINT:

  • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points in the problem analysis:

    What?

    Vehicle model, system name

    When?

    Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time

    Where?

    Whether the problem occurs at a specific location

    Under what conditions?

    Whether the doors were locked or unlocked, whether the engine switch was on, whether the engine was running

    How did it happen?

    Problem symptoms*

    • *: Be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem, and then check for DTCs.
NEXT

2.

CHECK THEFT DETERRENT SYSTEM OPERATION HISTORY

(a) Use the Techstream to check the theft deterrent system operation history around the time that the malfunction reported by the customer occurred, based on the contents of the customer interview and the last recorded theft deterrent system operation history around the time that the problem is reported to have occurred.

(1) On the Techstream screen, enter the following menus: Body / Main Body / Utility / Operation History Analysis. According to the display on the Techstream, read the operation history.

Click here

(2) Check that there is theft deterrent system operation history as reported by the customer.

Click here

HINT:

Based on the displayed operation history, perform vehicle-side inspection, and perform repairs if a problem is found. If the vehicle has no malfunction, interview the customer about possible causes such as "the driver" and "environmental / other than the driver".

Result

Proceed to

There is operational history around the time that the customer reported the malfunction to have occurred, but the malfunction could not be identified even by following the instructions to inspect the relevant areas

A

There is operational history around the time that the customer reported the malfunction to have occurred, and by following the instructions to inspect the relevant areas, the malfunction was identified

B

There is no operational history around the time that the customer reported the malfunction to have occurred.

C

B

GO TO STEP 12

C

END

A

3.

CHECK SECURITY INDICATOR LIGHT OPERATION

(a) When the theft deterrent system is in arming preparation state, check that the security indicator light is illuminated.

Click here

(b) When the theft deterrent system is in armed state, check that the security indicator light blinks.

Click here

State of Theft Deterrent System

Contents

Security Indicator Light Condition

Disarmed state (1), (2)

Theft deterrent system is unset.

  • Off (Immobiliser system unset)
  • Blinking (Immobiliser system set)

Arming preparation state

Standby period after theft deterrent system set conditions are met but before theft deterrent system is actually set (approximately 30 seconds).

(Theft detection not performed)

On

Armed state

Theft deterrent system is unset.

(Theft detection is possible)

Blinking (Immobiliser system set)

Alarm sounding state

Theft attempt is detected, and alarm is sounded using turn signal light, security horn assembly and vehicle horn.

(Alarm sounds for 27.5 seconds)

On

NG

GO TO OTHER PROBLEM

OK

4.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

ACC SW

Ignition switch ACC signal

ON or OFF

ON: Ignition switch ACC

OFF: Ignition switch off

-

IG SW

Ignition switch ON signal

ON or OFF

ON: Ignition switch ON

OFF: Ignition switch off or ACC

-

Body Electrical > Main Body > Data List

Tester Display

ACC SW

IG SW

OK:

Normal conditions listed above are displayed.

NG

GO TO LIGHTING SYSTEM

OK

5.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Lock Pos

Front door RH unlock detection switch

LOCK or UNLOCK

LOCK: Front door RH locked

UNLOCK: Front door RH unlocked

-

FL Door Lock Pos

Front door LH unlock detection switch

LOCK or UNLOCK

LOCK: Front door LH locked

UNLOCK: Front door LH unlocked

-

RR-Door Lock Pos SW

Rear door RH and LH unlock detection switch

ON or OFF

ON: Rear door RH or LH unlocked

OFF: Rear door RH and LH locked

-

RL-Door Lock Pos SW

Rear door RH and LH unlock detection switch

ON or OFF

ON: Rear door RH or LH unlocked

OFF: Rear door RH and LH locked

-

Body Electrical > Main Body > Data List

Tester Display

FR Door Lock Pos

FL Door Lock Pos

RR-Door Lock Pos SW

RL-Door Lock Pos SW

NG

GO TO LIGHTING SYSTEM

OK

6.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RR Door Courtesy SW

Rear door courtesy light switch assembly RH

ON or OFF

ON: Rear door RH open

OFF: Rear door RH closed

-

RL Door Courtesy SW

Rear door courtesy light switch assembly LH

ON or OFF

ON: Rear door LH open

OFF: Rear door LH closed

-

FR Door Courtesy SW

Front door courtesy light switch assembly RH

ON or OFF

ON: Front door RH open

OFF: Front door RH closed

-

FL Door Courtesy SW

Front door courtesy light switch assembly LH

ON or OFF

ON: Front door LH open

OFF: Front door LH closed

-

Body Electrical > Main Body > Data List

Tester Display

RR Door Courtesy SW

RL Door Courtesy SW

FR Door Courtesy SW

FL Door Courtesy SW

OK:

Normal conditions listed above are displayed.

NG

GO TO LIGHTING SYSTEM

OK

7.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Back Door Courtesy SW

Back door courtesy light switch

ON or OFF

ON: Back door open

OFF: Back door closed

-

Body Electrical > Main Body > Data List

Tester Display

Back Door Courtesy SW

OK:

Normal conditions listed above are displayed.

NG

GO TO LIGHTING SYSTEM

OK

8.

READ VALUE USING TECHSTREAM (HOOD COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Hood Courtesy SW

Hood courtesy switch

ON or OFF

ON: Hood open

OFF: Hood closed

-

Body Electrical > Main Body > Data List

Tester Display

Hood Courtesy SW

OK:

The Techstream display changes correctly in response to the hood courtesy switch (hood lock assembly) status.

NG

GO TO STEP 10

OK

9.

INTERVIEW THE CUSTOMER

(a) If the phenomenon could not be confirmed or reproduced, after explaining this to the customer, also explain the history of input signals from the electrical key transmitter sub-assembly (electronic key) for the relevant date/time in the operation history.

Click here

Standard:

Cause was identified

OK

END

NG

CHECK INTERMITTENT PROBLEMS

10.

INSPECT HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

(a) Remove the hood courtesy switch (hood lock assembly).

Click here

(b) Inspect the hood courtesy switch (hood lock assembly).

Click here

NG

REPLACE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

OK

11.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - BODY GROUND)

(a) Disconnect the F15 main body ECU (multiplex network body ECU) connector.

(b) Disconnect the A8 hood courtesy switch (hood lock assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F15-11 (HCTY) - A8-1 (+)

Always

Below 1 Ω

F15-11 (HCTY) or A8-1 (+) - Body ground

Always

10 kΩ or higher

A8-2 (E) - Body ground

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.

INTERVIEW THE CUSTOMER

(a) If the phenomenon could not be confirmed or reproduced, after explaining this to the customer, also explain the history of input signals from the electrical key transmitter sub-assembly (electronic key) for the relevant date/time in the operation history.

Click here

Standard:

Cause was identified

OK

END

NG

CHECK INTERMITTENT PROBLEMS

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