Lexus IS250 IS220d GSE20 ALE20 - BRAKE CONTROL
STOP LIGHT CONTROL RELAY (for Automatic Transmission) - ON-VEHICLE INSPECTION
1. INSPECT STOP LIGHT CONTROL RELAY |

Remove the stop light control relay.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Specified Condition 1 - 2 Bellow 1 Ω 3 - 4 Below 1 Ω
(When battery voltage is not applied between terminals)3 - 5 10 kΩ or higher
(When battery voltage is not applied between terminals)3 - 4 10 kΩ or higher
(When battery voltage is applied between terminals 1 and 2)3 - 5 Below 1 Ω
(When battery voltage is applied between terminals 1 and 2)
If the value is not as specified, replace the stop light control relay.