Toyota AVENSIS 2000 Supplement Manual page 186

INSPECTION PROCEDURE
1 Check PATTERN SEL SW signal.
ON
PWR
NG
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
When using hand–held tester:
PREPARATION:
(a) Remove the DLC3 cover.
(b) Connect a hand–held tester to the DLC3.
(c) Turn the ignition switch ON and hand–held tester main
switch ON.
CHECK:
Read the PATTERN SEL SW signal on the hand–held tester.
OK:
When not using hand–held tester:
PREPARATION:
SNWI
Turn the ignition switch ON.
CHECK:
Measure voltage between terminal each of PWR, SNWI of En-
gine & ECT ECU and body ground when the pattern select
switch is set to the PWR (POWER), NORM (NORMAL) or
SNOW (SNOW) position.
OK:
D10187
Switch position
NORM NORM
SNOW SNOW
HINT:
The Engine & ECT ECU uses the normal pattern signal if the
PWR and SNWI signals are not input.
OK
– AUTOMATIC TRANSAXLE (A246E)
Pattern select switch
POWER
NORM
SNOW
Tester connection
PWR – Body ground
PWR PWR
SNWI – Body ground
PWR – Body ground
SNWI – Body ground
PWR – Body ground
SNWI – Body ground
Proceed to next circuit inspection shown in
symptom problems table (See page DI–18).
DI–55
PATTERN SEL SW signal
ON
OFF
OFF
Specified condition
9 – 14 V
Below 1.5 V
Below 1.5 V
Below 1.5 V
Below 1.5 V
9 – 14 V