Toyota Corolla Repair Manual: Check short circuit
- If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b).
- Check the resistance with the body ground.
- Disconnect connectors a and c and measure the
resistance between terminals 1 and 2 of connector
a and the body ground.
Resistance: 10 kΩ or higher
Hint
: measure the resistance while lightly shaking the wire harness vertically and horizontally. In the case of fig. 6: Between terminal 1 of connector a and body ground " below 1 Ω
between terminal 2 of connector a and body ground " 10 kΩ
or higher therefore, the cause is a short circuit between terminal 1 of connector a and terminal 1 of connector c.
- Disconnect connector b and measure the resistance
between terminal 1 of connector a and the
body ground, and terminal 1 of connector b2 and
the body ground.
In the case of fig. 7: Between terminal 1 of connector a and body ground " 10 kw or higher between terminal 1 of connector b2 and body ground " below 1 w therefore, the cause is a short circuit between terminal 1 of connector b2 and terminal 1 of connector c.
Check open circuit
For the open circuit in the wire harness in fig. 1, Perform
a resistance check in step (b) or a voltage check in step
(c) to locate the section.
Check the resistance.
Disc ...
Check and replace ecu
Notice:
start an inspection of the connector from the backside
of the connector on the wire harness side with
the connector connected to the ecu.
When no measurement condition is specified, perf ...
Other materials:
Overhaul
Hint:
overhaul the rh side by the same procedure as the lh side.
1. Remove front wheel
2. Drain brake fluid
Notice:
wash the brake fluid off immediately if it comes into contact with any painted
surface.
3. Remove front disc brake cylinder sub–assy
Remove the union bolt and gasket fr ...
Circuit description
The throttle pressure that is applied to the primary regulator
valve (which modulates the line pressure) causes the solenoid
valve slt, under electronic control, to precisely and minutely
modulate and generate the line pressure according the extent
of the accelerator pedal depressed or the o ...
Inspection procedure
1 Inspect terminal voltage(idl)
Remove the cruise control ecu assy with connector still
connected.
disconnect the ecm connector.
turn the ignition switch to on.
measure voltage between terminal 13 (idl) of cruise control
ecu assy connector and body ground when the ...