DTC B1126

Precautions: Precautions for Diagnosing Trouble · Precautions for Replacing Remote Controller · Precautions for Remote Controller Disposal · Precautions for Replacing Keyless Start Control Module · Precautions for Control Systems · General safety (00)

DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
B1126: P Position Switch Malfunction P position switch ON signal is detected while vehicle running. (10 km/h (6 mile/h) or more)	•P position switch circuit / connector •P position switch •Keyless start control module

Circuit Diagram

[A]:	Keyless start control module connector (View: [a])	1.	Select lever	3.	Keyless start control module
A1:	P position switch signal circuit	2.	P position switch

DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

•Select a level road with no traffic to minimize the risk of accident.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.

1)Drive vehicle at 10 km/h (6 mile/h) or more for 1 minute.

DTC Troubleshooting

Step	Action	Yes	No
1	P position switch signal circuit check 1)Check that ignition is “OFF”. 2)Disconnect select lever and “L21” connectors. 3)Check for proper terminal connection to select lever and “L21” connectors. 4)If connections are OK, check the following points. •Resistance of “A1” circuit: less than 1 Ω •Resistance between “A1” circuit and ground: infinity •Resistance between “A1” circuit terminal and each terminal at select lever connector: infinity Is check result OK?	Go to Step 2.	Repair or replace defective wire harness.
2	P position switch check 1)Check P position switch. •A/T model: •Twin clutch system model: Is check result OK?	Replace keyless start control module and recheck DTC.	Replace select lever. •A/T model: •Twin clutch system model: