B1019

DTC B1019 Passenger Deploy.Loop Short to Voltage (Part 1 Of 2):

DTC B1019 Passenger Deploy.Loop Short to Voltage (Part 2 Of 2):

Wiring Diagram:

CIRCUIT DESCRIPTION
When you turn the ignition switch to the ON position, the inflatable restraint Sensing and Diagnostic Module (SDM) performs tests in order to diagnose critical malfunctions. Upon passing these tests, the system measures IGNITION 1 voltage, the 23-volt loop reserve, and deployment loop voltages in order to verify normal voltage ranges. The SDM monitors the voltages at the DRIVER SIDE LOW terminal 10 and at the Passenger Side Low terminal 3 in order to detect shorts to B+ in the inflator module circuits. The service wait time is 10 minutes. Refer to Disabling the SIR System.

CONDITIONS FOR SETTING THE DTC
^ The voltage at Driver Side Low terminal 10 is less than 3.5 volts.
^ The voltage at the Passenger Side Low terminal 3 is more than 3.5 volts for 500 milliseconds.

The Continuous Monitoring test checks for this DTC. This test occurs if IGNITION 1 is within the normal operating range.

ACTION TAKEN WHEN THE DTC SETS
^ The SDM sets DTC B1019 and DTC B1071.
^ The SDM turns ON the AIR BAG warning lamp.

CONDITIONS FOR CLEARING THE DTC
DTC B1019 is a latched code. You cannot clear a latched code. Before you replace the SDM, repair the malfunction that sets the DTC.

DIAGNOSTIC AIDS
A short-to-B+ in the circuit of the inflatable restraint IP module can cause an intermittent condition. DTC B1071 would occur with DTC B1019. Inspect the YEL/RED wire and the YEL wire carefully for broken wires or for chafed wires. Wiring pigtail damage requires replacement of the inflatable restraint IP module. Careful inspection of the circuits and of the components on the DIG B1019 Table prevents damage to the replacement SDM.

The diagnostic table directs the technician to note the entry value of PASSENGER SENSELO. Comparing the value of the PASSENGER SENSELO can help determine if an intermittent condition exists.

If this table requests measurements, use the J 39200 Digital Multimeter with the correct terminal adapter from the J 35616-A Connector Test Adapter kit. If a check for the correct connection is requested, refer Testing for Intermittent and Poor Connections to. If a wire repair, a connector repair, or a terminal J38125-B repair is requested, use the Terminal Wiring Repair Repair kit, and refer to Wiring Repair. Intermittents and Poor Connections

TEST DESCRIPTION
Numbers below refer to step numbers on the diagnostic table.
2. This test determines the Passenger Side Low voltage measured by the inflatable restraint Sensing and Diagnostic Module (SDM).
3. This test isolates the malfunction to one side of the inflatable restraint IP module yellow connector located behind the IP compartment.
5. This test determines whether the malfunction is in the YEL/RED wire.
7. This test determines whether the malfunction is in the YEL wire.