P0891

DTC P0891 AT RELAY - OPEN CIRCUIT

COMPONENT LOCATION
Refer to DTC P0890. P0890

GENERAL DESCRIPTION
The automatic transmission supplies power to the solenoid valves by way of a control relay When the PCM sets the relay to ON, the relay operates and the battery power is supplied to all the solenoid valves. When the PCM sets the relay to OFF, all solenoid valve power is shut off and the transmission is held in the 3rd gear position. (Fail Safe Mode)

DTC DESCRIPTION
The PCM checks the A/T control relay signal by monitoring the control signal. If the voltage applied to A/T solenoids is higher than 20 V, the PCM sets this code.

DTC DETECTING CONDITION

DTC DETECTING CONDITION:

MONITOR SCAN TOOL DATA
Refer to DTC P0890. P0890

TERMINAL & CONNECTOR INSPECTION
Refer to DTC P0890. P0890

POWER SUPPLY CIRCUIT INSPECTION
Refer to DTC P0890. P0890

SIGNAL CIRCUIT INSPECTION
Refer to DTC P0890. P0890

GROUND CIRCUIT INSPECTION
Refer to DTC P0890. P0890

COMPONENT INSPECTION
Refer to DTC P0890. P0890

VERIFICATION OF VEHICLE REPAIR
Refer to DTC P0890. P0890