3000GT (SOHC)
- Ignition timing is controlled by Powertrain Control Module (PCM) and is not adjustable. Manufacturer provides procedure for checking timing.
- Start engine and warm engine until engine temperature coolant is 176-203°F (80-95°C). Turn engine off. Insert a paper clip in noise filter connector. See Fig 1. Connect a tachometer to paper clip.
- Install a timing light. Start engine and allow it to idle. Using tachometer, read curb idle speed (RPM). Ensure curb idle speed is 600-800 RPM. Turn engine off. Curb idle speed is automatically controlled by Idle Air Control (IAC) system. If curb idle speed is not as specified, see DTC P0505 in
SELF-DIAGNOSTICS - MONTERO & 3000GT article.
- Disconnect waterproof female connector from Brown ignition timing check connector. See Figure. Using a jumper wire, ground ignition timing check terminal to read basic ignition timing. Using timing light, read basic ignition timing value. See IGNITION TIMING SPECIFICATIONS . If basic ignition timing is within specification, go to next step. If basic ignition timing is not within specification, see DTC P0335 in
SELF-DIAGNOSTICS - MONTERO & 3000GT article.
- Remove jumper wire to read actual ignition timing. Using timing light, read actual ignition timing value. If actual ignition timing is not within specification, see DTC P0335 in
SELF-DIAGNOSTICS - MONTERO & 3000GT article.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.