TOYOTA pmn - Manual (Page 62)

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4. INSTALL GROUND CONNECTION.
(a) Remove the original ground bolt.
(b) Install the ground point onto the bolt.
(c) Install the ground bolt.
Torque: 9 Nm
5. CONNECT WIRING HARNESS.
(a) Disconnect the 3 connectors of the engine ECU.
(b) Connect the turbo charger control unit harness to the
engine ECU.
(c) Connect the 3 engine ECU connectors to the turbo
charger control system harness.
(d) Connect the grey connector of the interior harness to
the engine room harness.
(e) Connect the vacuum hose to the control unit.