OTC Wireless switch/hub - Manual (Page 49)

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Self Diagnostics
ABS / Air Bag 2004 User Guide Chapter 5: Diagnostic Codes (Read / Clear Codes)
Figure 5.18: Clear Codes Instruction Screen
3 Read the screen and follow all instructions, if necessary.
Press the appropriate function key.
4 After this, one or more information or instruction screens
may appear. Read the screens and follow all instructions.
If necessary, use the function keys to answer any ques-
tions. Do this until the Diagnostic Trouble Codes menu
screen appears.
5 Use the EXIT key to return to previous screens.
Note: Check the codes again. If any codes remain, repeat
the Clear Codes steps. Make sure the vehicle’s ignition key
is in the On (Run) position and the engine is off. (If codes
remain, the problem may still exist in the vehicle.)
Note: GM supplemental inflatable restraint (SIR) code 52,
which indicates the air bag has been deployed, cannot be
cleared. All other codes clear and the SIR dash warning light
turns off.
Self Diagnostics
For some vehicles (Ford), the Self Diagnostics option
appears on the Diagnostic Trouble Codes menu
screen. This function is a diagnostic test that is acti-
vated and managed by the vehicle. At the completion
of the test, a list of diagnostic trouble codes displays on
the screen.
Note: Before performing this procedure, make sure the vehi-
cle’s ignition key is in the On (Run) position with the engine
off.
To perform a self diagnostic test, follow these steps:
Figure 5.19: Diagnostic Menu Screen
1 From the Diagnostic Menu screen, select Diagnostic
Codes and press the ENTER key. This displays the Diag-
nostic Trouble Codes menu screen.
Figure 5.20: Diagnostic Trouble Codes Menu Screen