2003 LEXUS LS430 key

Fig. 44: Identifying T9 ECU And E2 ECM Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSPONDER KEY ECU ASSY - ECM - RESISTANCE TABLE
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE ECM
CIRCUIT DESCRIPTION
This circuit provides power to operate the transponder key ECU.
WIRING DIAGRAM
Tester connectionSpecified condition
T9-6 (EFIO) - E2-6 (IMI)Below 1 ohms
T9-7 (EFII) - E2-7 (IMO)Below 1 ohms
T9-6 (EFIO) or E2-6 (IMI) -Body ground10 kohms or higher
T9-7 (EFII) or E2-7 (IMO) -Body ground10 kohms or higher

2.CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSY - BATTERY AND BODY
GROUND)
a. Disconnect the T9 ECU connector.
b. Measure the resistance and voltage of the wire harness side connector.
Fig. 46: Identifying T9 ECU Connector Terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSPONDER KEY ECU - BATTERY AND BODY GROUND - RESISTANCE TABLE
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE TRANSPONDER KEY ECU ASSY
Tester ConnectionSpecified ConditionCondition
T9-1 (CPUB) -Body groundAlways10 to 14V
T9-2 (IG2) - Body groundIgnition switch OFF --> ON0V --> 10 to 14 V
T9-14 (GND) -Body groundAlwaysBelow 1 ohms

Fig. 144: Tightening Cylinder Head Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Set the crankshaft position.
1. Using the crankshaft damper bolt, turn the crankshaft, and set the set key of the crankshaft to
90° counterclockwise from the timing mark (1 dot mark) of the oil pump body.

Fig. 145: Turning Crankshaft And Setting Set Key
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Install the camshafts of the RH bank.
1. Apply MP grease to the thrust portion of the camshafts.
2. Align the timing marks (1 dot mark) of the camshaft drive and driven main gears, and place
the 2 camshafts.
3. Set the timing mark (1 dot mark) of the camshaft drive and driven main gears at
approximatel
y 10° angle.

Fig. 154: Removing Service Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Check the set key of the crankshaft is at the position of 90° counterclockwise from the timing mark
(1 dot mark) of the oil pump body.

Fig. 155: Identifying Crankshaft Position Checking Setting Key
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Install the camshafts of the LH bank.
1. Apply MP grease to the thrust portion of the camshafts.
2. Align the timing marks (2 dot marks each) of the camshaft drive and driven main gears, and place
the 2 camshafts.

Fig. 166: Installing Camshaft Timing Pulley Sub-Assy LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
70.INSTALL CRANKSHAFT TIMING PULLEY
a. Align the timing pulley set key with the key groove of the pulley.
b. Using SST and a hammer, tap in the timing pulley. Face the flange side inward.
SST 09223-46011

Fig. 176: Taping Crankshaft Damper Using SST And Hammer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Using SST, install the damper bolt.
SST 09213-70010, 09330-00021
Torque: 245 N.m (2,500 kgf.cm, 181 ft.lbf)
c. Ali
gn the pulley set key with the key groove of the crankshaft damper.