Engine System, Gasoline/LPG111Service Manual – Advance 7765 / Nilfisk CR1500To Access the Engine DTC Error Codes ManuallyYou can access the engine DTC (diagnostic test code) error codesmanually without using a Controller Interface Kit and PC. Thecodes will be shown through a sequence of blinks on the CheckEngine Light (also referred to as the malfunction indicator lamp orMIL).To access the codes:1. Remove the Protective Cap from theCommunication Port on the engine.2. Use a wire to jumper Pin #1 to Pin #4as shown.3. Turn the key switch to the on position. You can now read the error codes by observing the blinks on theCheck Engine Light. Be ready to write down any codes that may be stored.Note: The light will always blink “1-6-5-4” three times at the beginning and at the end of the errorcode number display series.For example, error code “116”, indicating an ECT (engine coolant temperature) high-voltage condition,would be indicated as follows:a. The light will show one blink, a short pause, six blinks, a short pause, five blinks, a short pause, thenfour blinks. Note that this 1-6-5-4 sequence is not an error code, but will be repeated three times toindicate the beginning of the error code number display series.b. The light will show the first actual error code (116 in this example) with one blink, a short pause, oneblink, a short pause, then six blinks. This 1-1-6 sequence will be repeated three times, then the lightwill blink the next error code number sequence in the series (if present).• If no DTC codes are found, the Check Engine Light will continue to flash the 1-6-5-4 sequence only.• If one of the numbers in the DTC code is zero (0), the zero will be represented as a short pause (noflash).c. When all of the error code number sequences have been displayed, the light will blink the 1-6-5-4sequence three times again to indicate the end of the error code number series.d. The light will then repeat steps a through c above.EmptyPin #1 Pin #4Jumper across top row atoutside pins ORN & BLK/GRNProtective CapCommunication PortCheckEngineLight
