Toyota 1HD-FT Repair Manual page 227

ST-4
STARTING SYSTEM - PRE-HEATING SYSTEM
2. INSPECT PRE-HEATING TIMER OR EMISSION ECU
CIRCUIT
Check the connector on the wire harness side as
shown in these chart
Check for
Tester connection Condition
Specified value
Voltage·'
BAn -
Ground
-
Battery voltage
GINO - Ground
Ignition switch OFF No voltage
Voltage
Ignition switch ON
Battery voltage
Voltage-' +8. +81 - Ground
Ignition switch OFF No voltage
Ignition switch ON Battery voltage
Voltage*2
IG - Ground
Ignition switch OFF No voltage
Ignition switch ON Battery voltage
Voltage STA - Ground
Ignition switch OFF
No voltage
Ignition switch START Battery voltage
Voltage
VPWC - Ground
Ignition switch OFF No voltage
Ignition switch ON Battery voltage
Continuity GREl Ground
Continuity
Continuity·1 THW E2
-
Continuity
Continuity*2
THW -EG Continuity
Continuity*l E1, E01, E02 - Ground
-
Continuity
wI
EGR System
Wire Harness Side of Emission ECU
" K ,
r"11l..
I I
.-
.,
/
M"
/
f~
/
1/
'"
."
/
l- ••
r-'
""
/
,~,
V
'" " '"
/
1/ 1/ / /
." ,.,
u v..
'"
1/
~~
",
"
/
'"
.,
'G'
~
Ie sp,
n·"·'·" mn·2I·l
w/o
EGR System
I"P"'"
p-
Wire Harness Side of Pre-Heating Timer
' " ' / 11 :-
e-8-'
'"
'" H'G
,.,
*1:
wI
EGA System
*2:
wlo
EGA System
3. RECONNECT PRE-HEATING TIMER OR EMISSION
ECU CONNECTOR(SI