264 ENGINE 273 MPFI Stand Alone Diagnosis Refer 3.11.5 Trouble Shooting and Diagnosis. • Use Multimeter • Pin Assignment 1 : Supply 2 : Ground 3 : Output to Cluster • Arrange a setup as per schematic wiring diagram • With ignition ON, Pulse volt in ON condition = 12 Volt DC • Measure pulse volt across ECU pin no. 6 and car body as ground with Wiring harness connected to ECU. • Rotate the wheel. Check output pulses. SystemDiagnosis • Use TATADiagnostic Tool. • Check for Vehicle Speed Sensor value during driving. Internal Circuit On vehicle Removal & Refitment Procedure Removal from vehicle : • Remove electrical connector of vehicle speed sensor. • Unscrew the vehicle speed sensor. • Take out the sensor. Refitment of Vehicle Speed Sensor on vehicle • Tighten the vehicle speed sensor. • Connect electrical connector of vehicle speed sensor. Specification : 8 pulses per revolution. Operating voltage : 8 V to 18 V DC Operating Current, No Load, & 12 V Supply : 15 mA MAX. Operating Frequency (Calculated at 750 RPM) : 100 Hz Installation Guidelines Storage Condition Operating Temperature : -30°C to 125°C Storage Temperature : - 40°C to 150°C The components should be free from flash &moulding defects. Pin Assignment mm
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