C1258

C1258: 4WD Switch Circuit Faulty







CIRCUIT DESCRIPTION
Vehicles equipped with 2 Wheel Drive only still use EBCM 4 Wheel Drive input terminal.
When ignition is turned on, battery voltage is applied to EBCM terminal E136-5 to indicate vehicle is in 2 Wheel Drive.

CONDITIONS FOR SETTING THE DTC
DTC C1258 will be set when the voltage on the 4WD input circuits between 3.36 volts and 5.25 volts at any time.

ACTION TAKEN WHEN THE DTC SETS
^ ABS relay opens, removing power from the pump motor and solenoids.
^ DTC C1258 is stored.
^ ABS disabled, ABS warning light turns on.

DIAGNOSTIC AIDS
Typical Causes of DTC C1258.
^ Poor terminal connection at EBCM.
^ Faulty EBCM.
^ Open fuse.

INSPECTION

Step 1:

NOTE: Diagnostic flow table must be performed first before using this table.