SRS - DTC Troubleshooting/Repair
NO: 23-25-94GROUP: Body
DATE: Mar. 18, 1994
SUBJECT:
Supplemental Restraint System Troubleshooting
MODELS:
1991 - 1994 (B7) Stealth
SYMPTOM/CONDITION:
Diagnostic Trouble Codes 11, 12, 13, 22, 32, 34, 41, 42, or 43 displayed during diagnosis of the Supplemental Restraint System (SRS).
DIAGNOSIS:
Using the Scan Tool (DRB II) with the appropriate service manual or diagnostic procedure manual, verify that the SRS is functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order for future reference.
A. DIAGNOSTIC TROUBLE CODES 32, 41, OR 42.
If diagnostic trouble codes 32, 41 or 42 are displayed, take the following steps:
1. Turn the ignition key off. Remove and charge the battery.
2. Install the charged battery.
3. Turn the ignition key on. Check that the SRS warning light goes out.
4. If the SRS warning light does not go out, turn the ignition key on and off 10 times and check that the SRS warning light goes out.
5. If the SRS warning light does not go out, erase the diagnostic code by using the DRB II and check that the SRS warning light goes out.
6. If the SRS warning light does not go out, using the DRB II, follow the diagnostic procedure for the DTC displayed and correct the condition.
B. DIAGNOSTIC TROUBLE CODE 11
If diagnostic trouble code 11 is displayed, take the following steps:
1. Turn the ignition key to the "lock" position and disconnect the negative battery cable from the battery.
2. Remove the front impact sensor and measure the resistance (standard value 2000 Ohms +/- 40 Ohms) between terminals. Always replace the front impact sensor with a new one if the resistance is not within the standard value.
3. Reconnect the front impact sensor and all connectors which were disconnected.
4. Reconnect the negative battery terminal.
5. Turn the ignition key to the "ON" position.
6. If the SRS warning light does not go out, using the DRB II, follow the diagnostic procedure and correct the condition.
7. If fault code 11 is intermittently set and the initial resistance value of the sensors appear to be within specification, leave the meter connected to the sensors for 60 seconds. If the resistance increases beyond the specification during this test, replace the sensor.
8. 1991 and early built 1992 models: Look for signs of electrical corrosion between the terminal and the bracket on the impact sensors. Moisture entering through the terminal cavity could be the cause. Vehicles built after June 1992 are sealed with resin to eliminate the possibility of moisture entry.
C. DIAGNOSTIC TROUBLE CODES 12, 13, 22, 34, OR 43.
If diagnostic trouble codes 12, 13, 22, 34, or 43 are displayed during the inspection of the SRS system, these codes are set by turning the ignition key to the "ON" position while performing the unlocking procedure for the SRS diagnostic unit and/or disconnecting wiring connectors.
1. Verify that all wiring connectors in the SRS system are properly and fully connected.
2. Verify that the wiring connectors on the SRS diagnostic unit are properly and fully connected.
3. Turn the ignition key to the "ON" position and erase the diagnostic code by using DRB II.
4. If the SRS warning light does not go out, using the DRB II, follow the diagnostic procedure for the DTC displayed and correct the condition.
For vehicles built after October 1993, the procedure for unlocking the SRS diagnostic unit connector, the configuration of the lock lever has been changed.
A V-slot has been added to the lock lever to aid in making contact with the connector lock spring. Also an arrow mark has been added on the lock lever to help understand the proper direction to push the lock spring.
POLICY: Information Only