Toyota CH-R Service Manual: Engine does not Start because No Initial Combustion

DESCRIPTION

  • When a key is inserted into the ignition key cylinder, the transponder key coil receives the key ID code and sends it to the transponder key ECU assembly.
  • If an error in communication between the transponder key coil and transponder key ECU assembly occurs, this symptom may occur.

WIRING DIAGRAM

Refer to "System Diagram".

Click here

CAUTION / NOTICE / HINT

NOTICE:

If the transponder key ECU assembly or key is replaced, refer to Registration.

Click here

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Immobiliser > Trouble Codes Powertrain > Engine and ECT > Trouble Codes

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

3.

READ VALUE USING TECHSTREAM (IMMOBILISER FUEL CUT)

(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 / Engine / Data List.

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

Powertrain > Engine and ECT > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Immobiliser Fuel Cut

Status of immobiliser system fuel cut

OFF/ON

-

-

Powertrain > Engine and ECT > Data List

Tester Display

Immobiliser Fuel Cut

OK:

OFF is displayed after the engine is started.

Result

Proceed to

OK (w/o Canister Pump Module)

A

OK (w/ Canister Pump Module)

B

NG

C

A

GO TO SFI SYSTEM

B

GO TO SFI SYSTEM

C

4.

CHECK SECURITY INDICATOR LIGHT OPERATION

(a) Check that the security indicator light turns off when a registered key is inserted into the ignition key cylinder.

OK:

Security indicator light turns OFF.

OK

GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS

NG

5.

CHECK SECURITY INDICATOR LIGHT OPERATION

(a) Check that the security indicator light turns off when another registered key is inserted into the ignition key cylinder.

OK:

Security indicator light turns OFF.

NG

GO TO STEP 7

OK

6.

CHECK WHETHER ENGINE STARTS

(a) Using another registered key, turn the ignition switch to ON.

(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.

OK:

Engine starts normally.

Result

Proceed to

Engine can be started

A

Engine cannot be started

B

A

GO TO STEP 11

B

GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS

7.

REPLACE TRANSPONDER KEY COIL

(a) Replace the transponder key coil.

Click here

NEXT

8.

CHECK WHETHER ENGINE STARTS

(a) Using a registered key, turn the ignition switch to ON.

(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.

OK:

Engine starts normally.

Result

Proceed to

Engine can be started

A

Engine cannot be started

B

A

END (TRANSPONDER KEY COIL WAS DEFECTIVE)

B

9.

REPLACE TRANSPONDER KEY ECU ASSEMBLY

(a) Replace the transponder key ECU assembly with a new one.

Click here

HINT:

Refer to Registration.

Click here

NOTICE:

Key ID code registration is necessary when replacing the transponder key ECU assembly.

Click here

NEXT

10.

CHECK WHETHER ENGINE STARTS

(a) Using a registered key, turn the ignition switch to ON.

(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.

OK:

Engine starts normally.

Result

Proceed to

Engine can be started

A

Engine cannot be started

B

A

END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

B

11.

REPLACE KEY

(a) Replace the key.

NOTICE:

Key ID code registration is necessary when replacing the key.

Click here

NEXT

12.

CHECK WHETHER ENGINE STARTS

(a) Using a registered key, turn the ignition switch to ON.

(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.

OK:

Engine starts normally.

Result

Proceed to

Engine can be started

A

Engine cannot be started (w/o Canister Pump Module)

B

Engine cannot be started (w/ Canister Pump Module)

C

A

END (KEY WAS DEFECTIVE)

B

GO TO SFI SYSTEM

C

GO TO SFI SYSTEM

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