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 | .gif) | GO TO PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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| 2. |
CHECK VEHICLE SPECIFICATION |
(a) Check the vehicle specification,
| Result |
Proceed to |
|---|---|
| for 2WD |
A |
| for AWD |
B |
| B |
| GO TO STEP 5 |
|
| 3. |
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY |
Click here
| NG | | REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY
|
|
| 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
|
|
| 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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