LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 423 (Tire Pressure Monitoring System) >> Diagnostic Information and Procedures >> DTC C1245: Tire Pressure Difference >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The Tire Pressure Monitor (TPM) system uses the Electronic Brake Control Module (EBCM), and the ABS wheel speed sensor inputs to monitor tire pressure. The EBCM contains software to calculate relative tire pressure differences. The EBCM monitor the ABS wheel speed sensor inputs, which will all be the same as the learned calibration if the tire pressures stay the same. If the pressure increases or decreases in one tire so too will that tire's circumference and radius, which causes that wheel speed sensor to change. The EBCM recognizes this change in wheel speed as a tire pressure condition.

scientia non olet · About LEMON Manuals