When diagnostic fault codes point to a sensor issue, check the pins using a Digital Multimeter (DMM) based on these standard baseline parameters:
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| Pin | Signal Description | Approx. Type | | :--- | :--- | :--- | | 1 | Battery Power (Backup) | Power | | 2 | Ignition Power (Switch) | Power | | 6 | Chassis Ground | Ground | | 24 | Glow Control Unit (Control) | Control/Output | | 34 | Crank position sensor (+) | Sensor (Input) | | 35 | Crank position sensor (-) | Sensor (Input) | | 49 | Camshaft position sensor (+) | Sensor (Input) | | 50 | Camshaft position sensor (-) | Sensor (Input) | | 57 | Camshaft position sensor (shield) | Shield | | 78 | Fuel Temperature Sensor | Sensor (Input) | | 87 | CAN High | Communication | | 89 | K-Line | Communication | | 95 | CAN Low | Communication | | 103 | Glow Control Unit (Feedback) | Sensor/Input | | 119 | Suction Control Valve (SCV) (+)| Actuator/Output | | 120 | Suction Control Valve (SCV) (-)| Actuator/Output | When diagnostic fault codes point to a sensor