YES -
Faulty SRS unit or poor connection at SRS unit connector A (39P). Check the connection; if the connection is OK, 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.?
NO -
Open or increased resistance in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.?
12-2
SH AWD DTC Troubleshooting: 12-1, 12-2, 12-3
DTC 12-1, 12-2, 12-3:
Lateral Acceleration Sensor Malfunction
NOTE: Before you troubleshoot, review the general troubleshooting information See: Transmission and Drivetrain/Differential Assembly/Testing
and Inspection/Initial Inspection and Diagnostic Overview.
1. Turn the ignition switch to ON (II).
2. Check for DTCs in the VSA system with the HDS.
Are any lateral acceleration sensor DTCs indicated?
YES -
Go to the indicated DTC's troubleshooting.?
NO -
Go to step 3.
3. Test-drive the vehicle with an assistant. Drive in a left and right zig-zag pattern at about 13 mph (20 km/h) and check the LATERAL
ACCELERATION SENSOR in the DATA LIST with the HDS.
Does the sensor value change when turning?
YES -
Go to step 4.
NO -
Update the SH-AWD control unit if it does not have the latest software See: Powertrain Management/Transmission Control Systems/Relays and
Modules - Transmission and Drivetrain/Relays and Modules - Differential/Control Unit/Testing and Inspection/SH-AWD Control Unit Update, or
substitute a known-good SH-AWD control unit See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission
and Drivetrain/Relays and Modules - Differential/Control Unit/Service and Repair, and recheck. If the symptom/indication goes away with the
updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit,
replace the original SH-AWD control unit See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and
Drivetrain/Relays and Modules - Differential/Control Unit/Service and Repair.?
4. Park the vehicle on a level surface.
5. Check the LATERAL ACCELERATION SENSOR in the DATA LIST with the HDS.
Is there 0.1G or less?
YES -
Intermittent failure, the system is OK at this time. If the DTC returns, replace the SH-AWD control unit See: Powertrain
Management/Transmission Control Systems/Relays and Modules - Transmission and Drivetrain/Relays and Modules - Differential/Control
Unit/Service and Repair.?
NO -
Do the yaw rate-lateral/longitudinal acceleration neutral position memorization See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Testing and Inspection. If the DTC returns, replace the SH-AWD control unit See: Powertrain
Management/Transmission Control Systems/Relays and Modules - Transmission and Drivetrain/Relays and Modules - Differential/Control
Unit/Service and Repair.?
