1991 LEXUS SC400 instrument panel

(6) Fuel inlet hose from fuel tube
(7) Fuel return hose from return pipe
HINT: Plug the hose ends.
26. REMOVE CHARCOAL CANISTER
(a) Disconnect the vacuum hose and air hose from from the charcoal canister.
(b) Remove the charcoal canister.
27. DISCONNECT ENGINE WIRE FROM CABIN
(a) Remove the 2 clips, and pull out the instrument panel under cover.
(b) Remove the 4 screws.
(c) Disconnect the connectors, and remove the lower instrument
panel finish panel and glove compartment door assembly.
(d) Pull out the scuff plate.
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1UZ±FE ENGINE ENGINE MECHANICALEG±145
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(d) Install the ECM with the nut.
(e) Install the ECM protector with the 2 nuts.
(f) Install the floor carpet.
(g) Install the scuff plate.
(h) Connect the connectors.
(i) Install the lower instrument panel finish panel and glovecompartment door assembly with the 4 screws.
(j) Install the instrument panel under cover with the 2 clips.
EG±196
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1UZ±FE ENGINE ENGINE MECHANICAL
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(6) Two fuel hoses from fuel tubes. Plug the hose end.
26. REMOVE CHARCOAL CANISTER (a) Disconnect the vacuum hose and air hose from thecharcoal canister.
(b) Remove the charcoal canister.
27. DISCONNECT ENGINE WIRE FROM CABIN (a) Remove the two clips, and pull out the instrument panelunder cover.
(b) Remove the four mounting screws.
(c) Disc onnect the connectors, and remove the lower
instrument panel finish panel and glove compartment
door assembly.
(d) Pull out the scuff plate.
EM±124
±
ENGINE MECHANICAL Cylinder Block
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(g) Install the scuff plate.
(h) Connect the connectors.
(i) Install the lower instrument panel finish panel and glovecompartment door assembly with the four screws.
(j) Install the instrument panel under cover with the two clips.
12. INSTALL CHARCOAL CANISTER (a) Install the charcoal canister.
(b) Connect the vacuum hose and air hose to the charcoalcanister.
13. CONNECT HOSES Connect the following hose and ground strap:(1) Heater water hose to water by±pass pipe
(2) Heater water hose to heater water valve
(3) Vacuum hose to brake booster union on air intake
chamber
(4) Vacuum hose (from VSV for heater water valve) to
air intake chamber
(5) Ground strap to bracket on body
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ENGINE MECHANICAL Cylinder BlockEM±171
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13. DISCONNECT ENGINE WIRE FROM CABIN(a) Remove the two clips, and pull out the instrument panelunder cover.
(b) Remove the four mounting screws.
(c) Disc onnect the connectors, and remove the lower
instrument panel finish panel and glove compartment
door assembly.
(d) Pull out the scuff plate.
(e) Take out the front side of the floor carpet.
(f) Remove the two nuts and ECU protector.
(g) Remove the nut, and disconnect the engine (& ECT) ECU from the floor panel.
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ENGINE MECHANICAL Cylinder BlockEM±69
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(c) Install the engine (& ECT) ECU with the nut.
(d) Install the ECU cover with the two nuts.
(e) Install the floor carpet.
(f) Install the scuff plate.
(g) Connect the connectors.
(h) Install the lower instrument panel finish panel and glovecompartment door assembly with the four screws.
(i) Install the instrument panel under cover with the two clips.
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ENGINE MECHANICAL Cylinder BlockEM±107
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COMPONENTS FOR REMOVAL AND
INSTALLATION
INSPECTION OF ENGINE & ECT ECU
1. DISCONNECT CABLE FROM NEGATIVE TERMINAL OFBATTERY
CAUTION: Work must be started after approx. 20 se-
conds or longer from the time the ignition switch is
turned to the ºLOCKº position and the negative (±) termi-
nal cable is disconnected from the battery.
2. DISCONNECT ENGINE & ECT ECU FROM FLOOR P ANEL
(a) Remove the two clips, and pull out the instrument panel
under cover.
FI±128
EFI SYSTEM
± Electronic Control System (Engine & ECT ECU)
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wDisconnect the SST from the wiring connectors.
SST 09990±01000
4. REINSTALL ENGINE & ECT ECU TO FLOOR PANEL
(a) Connect the two ECU connectors.w Match the male connector correctly with the female
connector, then press them together.
w Tighten the bolt.
Make sure the connector is completely connected, by tight-
ening the bolt until there is a clearance of less than 1 mm
(0.04 in.) between bottom of the male connector and end of
the female connector.
(b) Install the ECU with the bolt.
(c) Install the ECU protector with the two nuts.
(d) Install the floor carpet.
(e) Install the instrument panel under cover with the two clips.
5. RECONNECT CABLE TO NEGATIVE TERMINAL OF BATTERY FI±135
EFI SYSTEM
± Electronic Control System (Engine & ECT ECU)
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