Test P: DTC B2268 Or DTC B2269 - Steering Wheel Control Switch Open Circuit or Short to Ground

PINPOINT TEST P: DTC B2268 OR DTC B2269 - STEERING WHEEL CONTROL SWITCH OPEN CIRCUIT OR SHORT TO GROUND

P1:

P2-P4:

P4-P6:

P6-P8:

P8-P10:

Normal Operation
Under normal operation, the steering wheel control switches receive a ground from the electronic automatic temperature control (EATC) module through circuit RH111 (GY/BU)/CS_RH106 (LB/BK). The EATC module senses the resistance (depending on what button is pressed) from the steering wheel control switches through circuit RH106 (VT/OG)/CS_VH444 (WH/VT).

Possible Causes
- An open in circuit RH111 (GY/BU)/CS_RH106 (LB/BK), RH106 (VT/OG)/CS_VH444 (WH/VT), CH447 (YE/GY) or CH448 (WH/BN)
- An short together in circuits RH111 (GY/BU)/CS_RH106 (LB/BK), RH106 (VT/OG)/CS_VH444 (WH/VT), CH447 (YE/GY) or CH448 (WH/BN)
- Steering wheel control switch
- EATC module