Reading Diagnostic Trouble Codes - MTC System

Fig 1: Reading DTCS As A/C Status Indicator Flashes

Courtesy of CHRYSLER LLC

All active and stored DTCs for the MTC system have an assigned code number. The A/C status indicator flashes in a series of pulses to display the code numbers. Each pulse has an indicator on time of 0.5 seconds. The tens unit value (1) is flashed first followed by the ones unit value (2). A 2.0 second indicator off-time (3) separates the unit values. When displaying multiple DTCs, the A/C status indicator will go off for five seconds (4) before displaying the next DTC (5). After displaying all DTCs (6), the sequence will repeat until exiting Display DTC Mode.