YES -
Go to step 23.
NO -
Check for a loose wire or poor connection at climate control unit connector A (40P). If the connection is good, substitute a known-good climate
control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit See: Heating and Air
Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
23. While measuring the voltage as described in step 22, reconnect these items individually and note the voltage reading each time:
- Driver's air mix control motor
- Passenger's air mix control motor
- Rear air mix control motor
- Humidity/in-car temperature sensor
- A/C pressure sensor
Does the voltage remain at about 5 V?
YES -
Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit See:
Heating and Air Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
NO -
Replace the component that caused the voltage drop.?
B2-Ax
SRS DTC Troubleshooting: B2-2x, B2-8x, B2-9x, B2-Ax, B2-Bx
DTC B2-2x, B2-8x, B2-9x, B2-Ax, B2-Bx ("x" can be 0 thru 9 or A thru F):
Internal Failure of the Rear Safing Sensor
NOTE:
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and
Disarming/Service and Repair and General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes.
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS
unit software See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/SRS Unit Update,
and retest.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to ON (II), then wait for 10 seconds.
3. Check for DTCs with the HDS.
Is DTC B2-2x, B2-8x, B2-9x, B2-Ax, or B2-Bx indicated?
YES -
Faulty rear safing sensor; replace the rear safing sensor See: Restraints and Safety Systems/Air Bag Systems/Safing Sensor/Service and Repair,
then clear the DTC. If the DTC is still present, replace the SRS unit See: Relays and Modules/Relays and Modules - Restraints and Safety
Systems/Air Bag Control Module/Service and Repair/SRS Unit Replacement.?
