With the ignition key ON and bus activity, the voltage should vary from 0 to 5V depending on the amount of bus activity!ĪDDITIONAL NOTES PCM receives battery voltage (B+) through a fuse or fusible link. With the ignition key ON and no bus activity, BUS + should read 0V BUS should read 5V TEST 5: Connect positive DMM lead to either DLC bias terminals Connect negative DMM lead to the ground terminal This tests the ECM Voltage supply as no power may be caused by a blown lighter fuse You also get access to hundreds of parameters and sensors that are not available over standard OBD2. The Nissan Add-on provides access to proprietary modules such as ABS, Airbag, Transmission, Body Control, and many others on Nissan and Infiniti vehicles.
#Nissan data scan version 1 serial#
With the Ignition on, the voltage on class 2 serial data pin should be 5V or fluctuating between 3.5V and 5.0V, If open, PCM cannot transmit data to the scan tool.Ĭonnect positive DMM lead to DLC Battery + terminal Connect negative DMM lead to battery ground terminal A Nissan Enhanced Diagnostics Add-on is now available for purchase. UltraGauge can scan, read and clear trouble codes. UltraGauge displays mileage gauges including Instantaneous MPG, Average MPG, gallons per hour, DTE and more. (does not apply to a Mazda MPV)Ĭonnect the positive DMM lead to the class 2 Serial Data pin and the negative DMM lead to either pin 4 or pin 5 or a known good ground UltraGauge is both an OBDII Scan Tool and an Information center that displays selectable engine gauges, such as RPM, Speed, Coolant Temperature, Boost, Distance, Fuel Pressure, Mass Air Flow, and more. NOTE: An open circuit or high ground resistance means that the PCM will never enter diagnostic mode. With the ignition on, the voltage drop across the ground terminal should be 0.1 Volts or less Do not connect to the body or chassis ground but to the battery terminal directly. TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. If the scan tool does not receive data from an OBD II vehicle
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