Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Neutral Position Switch Circuit

DESCRIPTION

The engine stop and start ECU uses the park/neutral position switch assembly installed to the continuously variable transaxle assembly to detect when the shift lever is in P or N.

WIRING DIAGRAM

Refer to DTC P085012.

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CAUTION / NOTICE / HINT

NOTICE:

  • 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.

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  • After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).

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  • 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.

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  • Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

For wire harness and connector inspection procedures and precautions, refer to " "

PROCEDURE

1.

READ VALUE USING GTS (NEUTRAL SWITCH)

(a) In accordance with the display on the GTS, read the Data List.

Powertrain > Stop and Start > Data List

Tester Display

Neutral Switch

OK:

Tester Display

Condition

Normal Condition

Neutral Switch

Shift lever in P or N

ON

Shift lever not in P or N

OFF

OK

GO TO PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

CHECK VEHICLE SPECIFICATION

(a) Check the vehicle specification,

Result

Proceed to

for 2WD

A

for AWD

B

B

GO TO STEP 5

A

3.

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click here

NG

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

OK

4.

CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

(a) Disconnect the A169 engine stop and start ECU connector.

(b) Disconnect the C62 park/neutral position switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A169-21 (STA) - C62-5 (L)

Always

Below 1 Ω

A169-17 (CLL) - C62-4 (B)

Always

Below 1 Ω

A169-21 (STA) - Body ground

Always

80 to 180 Ω

A169-17 (CLL) - Body ground

Always

10 kΩ or higher

C62-5 (L) - Body ground

Always

80 to 180 Ω

C62-4 (B) - Body ground

Always

10 kΩ or higher

OK

REPLACE ENGINE STOP AND START ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click here

NG

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

OK

6.

CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

(a) Disconnect the A169 engine stop and start ECU connector.

(b) Disconnect the C62 park/neutral position switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A169-21 (STA) - C62-5 (L)

Always

Below 1 Ω

A169-17 (CLL) - C62-4 (B)

Always

Below 1 Ω

A169-21 (STA) - Body ground

Always

80 to 180 Ω

A169-17 (CLL) - Body ground

Always

10 kΩ or higher

C62-5 (L) - Body ground

Always

80 to 180 Ω

C62-4 (B) - Body ground

Always

10 kΩ or higher

OK

REPLACE ENGINE STOP AND START ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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