Code 22 - SAFING Sensor Shorted: TestProcedure

WARNING: This page is about a different car, the 1996 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.

Verify Condition

Turn ignition on. Check for fault codes. If Code 22 is flashing, go to step 2). If Code 22 is not flashing, check connectors, wiring, splices, and crimps for an intermittent problem. DO NOT proceed with diagnostic test until code is flashing. Failure to do so will result in needless replacement of diagnostic monitor.

Check For Short Circuit

Deactivate air bag system. See COMPLETE SYSTEM DEACTIVATION . Turn ignition on. Measure voltage between terminal No. 3 (Black) and 13 (Light Green/Purple wire) at diagnostic monitor connector.Note this reading as system voltage.

Using terminal No. 3 (Black wire)as ground, measure voltage between terminal No. 3 and 11 (Gray/Orange) of diagnostic monitor connector. Using this voltage reading and system voltage reading taken in step 2), determine if voltage at terminal No. 11 is within specification. See VOLTAGE SPECIFICATIONS (CODE 22) table. If voltage is high, go to step 4). If voltage is okay, replace diagnostic monitor.

VOLTAGE SPECIFICATIONS (CODE 22)

Voltage At terminal No. 11	System Voltage
2.3	9.0
2.4	9.5
2.5	10.0
2.7	10.5
2.8	11.0
3.0	11.5
3.1	12.0
3.2	12.5
3.4	13.0
3.5	13.5
3.7	14.0
3.8	14.5
4.0	15.0
4.1	15.5
4.3	16.0

Check For Shorted Wiring

Turn ignition off. Disconnect diagnostic monitor. Disconnect safing sensor. See Figure . Check for continuity between terminal No. 11 (Gray/Orange) and terminal No. 15 (White/Orange) and 23 (Purple/Orange) of diagnostic monitor connector. See Figure and Fig. Figure . If continuity does not exist, go to step 5). If continuity exists in at least one circuit, locate and repair short between circuits 614 and 611 or 612. Repair as necessary. Reconnect, verify, and reactivate system.

Check For Safing Sensor Short

Check for continuity between White/Orange wire and Gray/Orange wire of safing sensor connector. If continuity exists, replace safing sensor. If continuity does not exist, locate and repair short to voltage in circuit 614, 615, 616, or 623.