Keyless Start System

DTC B1158

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

1) Push engine switch to change ignition mode to "ON".
2) Operates each power window.

DTC Troubleshooting


1. LIN communication circuit check
Disconnect negative (-) cable at battery.
Disconnect front power window motors, power window master switch and "L01" connectors.
Check for proper terminal connection to front power window motors, power window master switch and "L01" connectors.
If connections are OK, connect negative (-) cable at battery and check the following points.
Resistance of "A1" circuit: less than 3
Resistance between "A1" circuit and ground: infinity
Resistance between "A1" circuit terminal and each terminal at each front power window motor connector: infinity
Resistance between "A1" circuit terminal and each terminal at power window master switch connector: infinity
Voltage of "A1" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")
Are they in good condition?
YES
Go to Step 2.
NO
Repair or replace defective wire harness.
2. Power window unit check
Check the following points.
Power window master switch: Service and Repair
Power window motor: Front Window Regulator Assembly Inspection
Are they in good condition?
YES
Replace keyless start control module and recheck DTC. Service and Repair
NO
Replace defective part.