wc_tx003818gb_FM10.fm
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RT / RTx Engine Control Module (ECM) Diagnostics
5.8 Entering the ECM Diagnostic Mode
Perform the procedure below to enter the ECM diagnostic mode.
1. Begin with the key (a) in the OFF position.
2. Connect the diagnostic tool (b). See topic Connecting the Diagnostic Tool.
3. Press and hold button “B” of the diagnostic tool. While holding button “B,” turn
the key to the ON position. Release button “B” when the letter “d” appears on
the ECM (c). The ECM diagnostic mode is now active.
4. Refer to the following topics for specific diagnostic procedures:
■ ECM Fault and Error Codes
■ Resetting the ECM Diagnostic Data and the Tip-Over Light
To exit the ECM diagnostic mode, turn the key to the OFF position.
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