Procedure
The basics for diagnosing a Supplemental Restraint System:1. Clearly identify the customer description, when it happens, under what conditions, over what type of road surface.
2. Using the scan tool, read the codes from the system. Look carefully to see if the code is an active or history code. History codes may be more difficult to diagnose, since the condition that set the code may no longer be present. This will make the customer's description very important in determining why the vehicle was brought in for repair.
^ Active Code - Indicates the condition that set the code is still present.
^ History Code - Indicates that the condition that set the code is intermittent or no longer present. (In some cases, if the condition has not repeated, the code may clear after 5 key cycles.)
3. Identify the part of the system that the code and the customer description apply to. At this time you may have enough information to determine the service procedure, but usually some diagnosis will be required.
CAUTION:
Before proceeding with the diagnosis, the negative battery cable must be removed from the terminal for a minimum of 30 seconds.
4. Access the SRSCM connector (refer to the appropriate shop manual for the exact location). Determine which pins in the connector are used for the circuit to be diagnosed. If the circuit contains an air bag or seat belt pretensioner, unplug it and plug in the dummy load.
SST PART NUMBER DESCRIPTION/USE
1996-1999
Accent, Elantra, Tiburon 0957A-2900 Air Bag Wiring Harness Checker Kit
1996-1998 Sonata 0957A-29000 Air Bag Wiring Harness Checker Kit
1999 Sonata 0957A-38200 Dummy
1999 Sonata 0957A-38300 Dummy adapter
1999 Sonata 0957A-384000 Dummy adapter to connect BPT
5. Dummy loads are provided in the Air Bag Wiring Harness Checker kit for the 96-99 Accent, Elantra, and Tiburon, and the 96 - 98 Sonata. They are provided separately for the 1999 Sonata.
Attach a good quality DVOM to the red and black leads on the diagnosis checker (SST # 0957A-38000). Use the pins on the diagnosis checker to probe the pins in the SRSCM wire harness connector. Based on how the circuit operates, you may be looking for resistance or voltage. If a shorting bar in the connector affects the circuit, use the plastic wire tie end on the SST to open the shorting bar.