Toyota RM787U, Service And Repair Manual, Page: 909 / 1976

I01925
TAIL
(+)
(-)
DI-546
- DIAGNOSTICS THEFT DETERRENT SYSTEM
700
Author: Date:
2001 SIENNA (RM787U)
INSPECTION PROCEDURE
HINT:
The flow chart below is based on the premise that the taillights light up normally whenever the light control
switch is operated. If taillight operation is not normal when the light control switch is operated, proceed to
troubleshooting on page
BE-2 .
1 Check voltage between terminal TAIL of theft deterrent ECU connector and body
ground.
PREPARATION:
Disconnect the theft deterrent ECU connector.
CHECK:
Measure voltage between terminal TAIL of theft deterrent ECU
connector and body ground.
OK:
Voltage: 10-14V
NG Check and repair harness and connector be-
tween theft deterrent ECU and taillight control
relay (See page
IN-31 ).
OK
Check and replace theft deterrent ECU.