DTC 62

=7( Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION
When the ignition switch is first turned "ON" battery voltage is applied to the "AIR BAG" warning lamp and to the "Ignition 1" input terminals "A9" and "A10." The DERM responds by flashing the "AIR BAG" warning lamp seven times alternating between the primary and redundant lamp drivers The DERM monitors the redundant lamp driver output by comparing the output state at "SIR Indicator" terminal "B1" to the microprocessor commanded state When "Ignition 1" is above a specified value and the output state does not match the commanded state of the redundant lamp driver for 400 milliseconds DTC 62 is set.

TEST CONDITIONS
Tested every 100 milliseconds during "Continuous Monitoring" tests

FAILURE CONDITIONS
DTC 62 will set when "Ignition 1" voltage is above a specified value and the output state of the "SIR Indicator" terminal "B1" does not match the commanded state of the redundant lamp driver for 400 milliseconds.

ACTION TAKEN
DERM attempts to turn "ON" the "AIR BAG" warning lamp using the primary lamp driver and sets a diagnostic trouble codes.

CONDITIONS TO CLEAR
DTC 62 will clear each time the ignition switch is turned "OFF."

TEST DESCRIPTION
Number(s) below refer to circled number(s on the diagnostic chart.
1. This test checks for an open in the "Redundant indicator Ground" circuit.
2. This test determines whether the malfunction is due to an open in the "Redundant Indicator Ignition 1" circuit or a malfunctioning DERM.