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.
Click here .gif)
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.
Click here
- After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).
Click here
- 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.
Click here
- 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 |
|
.gif)
| 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 |
READ NEXT:
Stop and Start Cancel Switch Circuit
DESCRIPTION Stop and start control can be disabled by pressing the stop and start system cancel switch (combination switch assembly). The stop and start system cancel switch (combination switch assemb
Stop and Start System does not Operate
DESCRIPTION
This procedure is for when the stop and start system does not operate.
Regarding explanations of the features of stop and start system control:
Click here
PROCEDURE
1
Stop and Start System does not Operate (Battery Condition)
DESCRIPTION When the stop and start system does not operate, check whether the operation is prohibited because the auxiliary battery conditions are not met. Data List items
Hood Courtesy Switch
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT AIR FUEL RATIO SENSOR
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified Condition
1 (HA1A) - 2 (+B)
20°C (68°F) 1.6 to 3.2 Ω
1 (HA1
Left Front Wheel Speed Sensor Internal Electronic Failure (C050049)
DESCRIPTION
When the system is starting up and the skid control ECU (brake
actuator assembly) detects a speed sensor circuit malfunction via the speed sensor
circuit self-diagnosis function, this DTC is stored.
DTC No.
Detection Item
DTC Detection Condition
