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I45364
0.6
0.4 S
DUTY 50%
417.792 ms
2
GND
I43804
I42329
GND
05 -- 376
--
DIAGNOSTICS
COMBINATION M ETER (1ND -- TV)
COROLLA Supplement (RM1129E)
WATER LEVEL (C12 -- 9) (*4) --
Body ground
W (LG) --
Body ground
DIESEL/FILTER s ignal
DIESEL/FILTER i ndicator light OFF
→
ON
10 to 14 V
→
Below 1 V
TXT -- (C12 -- 10) -- Body ground
SB (LG) --
Body ground
Multi -- mode switch signal
(Communication circuit)
Ignition switch OFF ON
BRQ-- (C12--11) --
Body ground
SB (L--Y) --
Body ground
Multi--mode switch signal
Ignition switch ON (IG), MMT indi-
cator light ON
→
OFF
Below 1 V
→
10 to 14 V
CRUISE (C12--12) --
Body ground
SB (R) --
Body ground
CRUISE signal
Ignition switch ON and CRUISE in-
dicator light ON
→
OFF
Below 1 V
→
10 to 14 V
(*1): w/ Daytime running light
(*2): w/o Daytime running light
(*3): w/ VSC
(*4): Diesel
( ): The wiring color differs depending on the vehicle.
Wave Form 1: Reference: Using oscilloscope:
Item
Condition
Tool setting
5 V/ DIV, 10 ms/ DIV
Vehicle condition
Passenger seat belt indicator light blinks
Wave Form 2: Reference: Using oscilloscope:
Item
Condition
Tool setting
5 V/ DIV, 10 ms/ DIV
Vehicle condition
Ignition switch ON
Wave Form 3: Reference: Using oscilloscope:
Item
Condition
Tool setting
5 V/ DIV, 20 ms/ DIV
Vehicle condition
Driving at approx. 20 km/h (12 mph)
HINT:
As vehicle speed increases, the cycle of the signal wave form
narrows.
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E