| Circuit Diagram |

Signal Waveform Idle rail pressure regulator waveform
Inspection 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the fuel pressure regulator valve connector.
Removal High Mounted Stop Lamp 1. Disconnect the negative (-) battery terminal. 2. Remove the roof trim assembly. (Refer to Body - "Roof Trim") 3. Remove the high mounted stop lamp assembly (A) after loosening the mounting screws. Installation 1.
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