Test Program/Checking System with Tester

For belt tensioner testing on vehicles WITHOUT airbags, Testing and Inspection

Test Program
If the warning lamp (A1e15) for the restraint system in the instrument cluster fails to light up when the ignition key is turned to position 1 or 2 (ignition), proceed as follows:

Part 1/4:

Part 2/4:

Part 3/4:

Part 4/4:

If, after turning the ignition key to position "1", the warning lamp lights up but fails to go out again within 10 s or flickers intermittently during driving, proceed as follows:

Test Step 1:

Test Step 1, Continued:

Test Step 2:

Test Step 2, Continued:

Test Step 3:

Test Step 3, Continued:

Test Step 3, Continued - Test Step 4:

Test Step 4, Continued:

Test Step 6:

Test Step 6, Continued - Test Step 7:

Test Instructions for Tester 126 589 10 21 00 (revised)
Before testing with the tester, the airbag restraint system must be tested by means of the RS/SRS warning lamp (A1e15). With the ignition switched on, the RS/SRS warning lamp should light up for approx. 10 s. If necessary, check warning lamp or cable.

WARNING: Each time before disconnecting the red test coupling/plug connection for airbag, 10-pin (X29/9), to connect the tester, the ignition key must be turned to position "0", the negative terminal of the battery disconnected and covered. Then reconnect the battery for the test.

Test Steps 1-3:

Test Steps 4-7:

* Further applications using the tester as a voltmeter or ohmmeter (in the context of the airbag test only)

Test Steps 8-10*: