DI-191 DIAGNOSTICS
-
ENGINE (2JZ-GTE)
WIRING DIAGRAM ECM B-R
3
2 2
B-W B
B-R
EFI No.1
1 2A
R-L
Heated Oxygen Sensor (Bank 1 Sensor 2)
2
3
4
1
9 IC1
E1 1
14
R-L
M-REL 48 OX1 B
3
2
4
IJ1
4 IC1
W-B
2
R/B No.2
2 EA2 20
EA2
W
Heated Oxygen Sensor (Bank 1 Sensor 1)
B-R
2
B-R
IJ2
B-L
71 HT1 B
R-L
41 OXS B
12 BR-W
BR-W IC1
BR
8 IC1
Battery EB
BR
5
BR-W
IJ2
18 IJ1
E01 E1
BR
1
5
B-R
72 HTS B
BR
E01
BR
5
R/B No.2
24 A
GR B-R
2
8 EA1
B-R
2
EFI Main Relay
B-Y
B+
ED
S02435
INSPECTION PROCEDURE 1
Connect the OBD II scan tool or TOYOTA hand-held tester and read value for voltage output of heated oxygen sensor.
PREPARATION: (a) Connect the OBD II scan tool or TOYOTA hand-held tester to the DLC 3. (b) Warm up engine to normal operation temperature. CHECK: Read voltage output of heated oxygen sensor (bank 1 sensor 1) when engine is suddenly raced. HINT: Perform quick racing to 4,000 rpm 3 times using accelerator pedal. OK: Both heated oxygen sensors (bank 1 sensor 1) output a RICH signal (0.45 V or more) at least once. OK
Check and replace ECM (See page IN-28 ).
NG
1997 SUPRA (RM502U)
Author :
Date :
419