Test 5 - When DTC No.11, No. 12 Or No. 13 Is Displayed

TEST 5 - WHEN DIAGNOSTIC TROUBLE CODE No. 11, No. 12 OR No. 13 IS DISPLAYED
(From 1994 models)





WIRING DIAGRAM





SDU CONNECTOR





FLOW CHART

PROCEDURES





(1) Turn the ignition key to the "LOCK" position, disconnect the negative battery cable and tape the terminal.

Caution: Wait at least 60 seconds after disconnecting the battery cable before doing any further work. The SRS system is designed to retain enough voltage to deploy the air bag even after the battery has been disconnected. Serious injury may result from unintended air bag deployment if work is done on the SRS system immediately after the battery cable is disconnected.

(2) Remove the rear console assembly.
(3) Release the lock of SDU connector in accordance with the following procedure:





In case that there is no notch on the lock lever (Type 1)

Place a flat tip screwdriver against the lock spring (metal section) of the connector lock lever as shown in the illustration, and push the spring horizontally toward the inside of the unit.

Caution:
1. Do not use excessive force to raise the lock lever.
2. Do not insert the screwdriver into the gap between the lock lever and the lock spring.





In case that there is a notch on the lock lever (Type 2)

Place a flat tip screwdriver against the lock spring (metal section) at the lock lever notch as shown in the illustration, and push the spring toward the unit.

Caution: Do not use excessive force to raise the lock lever.

(4) Disconnect red 14-pin connector from the SRS diagnosis unit.





(5) Connect the now disconnected red harness-side SDU connector (14-pin) to the connector (3) of the SRS Check Harness.
(6) Check according to the flow chart on the next page, using the digital multi-meter.

NOTE - IMPORTANT:
(1) After repairing the SRS, reconnect the battery cable, erase the diagnostic trouble code memory from the scan tool and check the SRS warning light operation to verify the system functions properly. Refer to TEST 1. Test 1 - SRS Warning Light Does Not Extinguish
(2) SDU = SRS Diagnosis Unit





FRONT IMPACT SENSOR RESISTANCE CHECK

NOTE: If combined front impact sensor and air bag module (squib) failure modes simultaneously occur in two places, the preconditions for the respective detection circuits will go out of order. For this reason, both diagnostic trouble codes may not be stored but only one of them may be indicated.





Their relationships are shown in the table above. The numbers in the boxes are diagnostic trouble codes numbers.

SRS CHECK HARNESS

PAGE REFERENCE:

(1) Connect the red 2-pin connector (1) of the SRS Check Harness to the SDU in place of the clock spring-SDU connector pasenger's air bag module-SDU.

NOTE: A 3-ohm resistor that corresponds to the resistance of the air bag module (squib) and the wiring resistance is connected between the terminals of the cconnector (1) of the SRS Check Harness.

(2) Reconnect blue and yellow connectors for the wiring leading to the front impact sensors to the SDU and double lock them.

NOTE: If double locking cannot be made the connector is incorrectly or incompletely inserted; re-check to insert the connector correctly and securely.

NOTE - IMPORTANT
(2) After repairing the SRS, reconnect the battery cable, erase the diagnostic trouble code memory from the scan tool and check the SRS warning light operation to verify the system functions properly. Refer to TEST 1. Test 1 - SRS Warning Light Does Not Extinguish
(2) SDU = SRS Diagnosis Unit