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ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-53 < SYSTEM DESCRIPTION > [HR12DE (TYPE 1)] C D E F G H I J K L M A EC N P O • It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction. • Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds. 2. Repeat the following procedure quickly five times within 5 seconds. - Fully depress the accelerator pedal. - Fully release the accelerator pedal. 3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts 4. Fully release the accelerator pedal. HOW TO ERASE DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS) Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to “How to Set Diagnostic Test Mode II 2. Fully depress the accelerator pedal and keep it for more than 10 seconds. 3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed. How to Erase Diagnostic Test Mode II (Self-diagnostic Results) The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to “How OBD System Operation Chart Relationship Between MIL, 1st Trip DTC, DTC and Detectable Items • When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are stored in the ECM memory. • When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are stored in the ECM memory, and the MIL will come on. • The MIL will go off after the vehicle is driven 3 times (pattern B) with no malfunction. The drive is counted only when the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while • The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (pattern A) without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel Injection • The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip. Summary Chart PBIB0092E Items Fuel Injection System Misfire Other MIL (goes off) 3 (pattern B) 3 (pattern B) 3 (pattern B) DTC, Freeze Frame Data (no 80 (pattern C) 80 (pattern C) 40 (pattern A) |