Code 53 (Chart 2) - Driver Sense Low High Resistance: Description

During INITIATOR CIRCUIT RESISTANCE tests, DERM injects a 150-milliampere current from DRIVER SENSE HIGH output to PASS SENSE LOW output for 50 milliseconds. DERM then injects a 150-milliampere current from PASS SENSE HIGH output to DRIVER SENSE LOW output for 50 milliseconds. During these tests, DERM calculates voltage difference between DRIVER SENSE HIGH and DRIVER SENSE LOW terminals. This voltage difference is used to determine combined resistance of driver inflator module, SIR coil, harness wiring and connector terminal contacts. Code 53 sets when resistance is greater than a specified value or an open exists in DRIVER SENSE LOW circuit between DERM and steering column connector.