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G552800t51 : CHECK THE POWER SUPPLY TO THE EGR ACTUATOR 1. Measure the voltage between: C70, harness side Battery
Pin 03
Negative terminal
Is the voltage between 4.8 and 5.2 volts? -> Yes GO to Pinpoint Test G552800t21.
-> No GO to Pinpoint Test G552800t50.
G552800t21 : CHECK THE EGR ACTUATOR SIGNAL CIRCUIT FOR A SHORT 1. Key off. 2. Disconnect the EGR actuator connector, C70. 3. Key on, engine off. 4. Measure the resistance between: C70, harness side Battery
Pin 02
Negative terminal
Is the resistance greater than 100 Kohms? -> Yes GO to Pinpoint Test G552800t22.
-> No GO to Pinpoint Test G552800t24.
G552800t22 : CHECK THE EGR ACTUATOR SIGNAL CIRCUIT FOR A SHORT 1. Measure the resistance between: C70, harness side Battery
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