Front Door Courtesy Switch
ComponentsPower Supply Drive Circuit (C1257)
DESCRIPTION
The motor relay (semiconductor relay) is built into the hydraulic brake booster
and drives the pump motor based on a signal from the skid control ECU (master cylinder
solenoid).
DTC No.
DTC Detecting Condition
Trouble Areas
C1257
...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE OIL PUMP RELIEF VALVE
(a) Using a 27 mm socket wrench, remove the oil pump relief valve plug.
(b) Remove the oil pump relief valve spring and oil pump relief valve.
(c) Remove the spring and relief valve.
2. R ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT OUTER MIRROR LH
(a) Check the outer mirror heater operation.
Text in Illustration
*a
Component without harness connected
(Outer Mirror LH)
(1) Measure the resistance according to the value(s) ...