DTC P1885-79

Precautions: Precautions for Diagnosing Trouble · Precautions for Disassembly and Reassembly · Precautions for Transmission / Transaxle · General safety (00)

DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
P1885-79: Door Switch Circuit – Mechanical Linkage Failure Driver side front door switch signal from wire and driver side front door switch signal via CAN disagree. (1 D/C detection logic but transmission warning light does not light up)	•Driver side front door switch and/or circuit •TCM

Circuit Diagram

[A]:	TCM connector (View: [a])	1.	TCM	3.	Keyless start control module
A1:	Driver side front door switch signal circuit	2.	Driver side front door 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.

NOTE:

•Check that the following condition is satisfied in this procedure.

—11 V < Battery voltage < 15 V

•Check that the following DTCs are not detected in this “DTC Confirmation Procedure.”

—CAN communication (U0073-88 and U0141-87)

1)Open driver side front door.

DTC Troubleshooting

Step	Action	Yes	No
1	Was “Twin Clutch System Check” performed?	Go to Step 2.	Go to Twin Clutch System Check.
2	Door switch signal circuit check 1)With ignition “OFF”, disconnect “E495” connector from TCM and “L21” connector from keyless start control module and driver side front door switch connector. 2)Check for proper terminal connection to “E495” and “L21” connector and driver side front door switch connector. 3)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 other terminal at “E495” connector: infinity •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”). Is check result OK?	Replace TCM and recheck DTC.	Repair or replace defective wire harness.