Differential Lock Solenoid Relay

Differential Lock Solenoid Relay
DIAGNOSTIC PROCEDURE
1. CHECK DIFFERENTIAL LOCK SOLENOID SYSTEM
Perform self-diagnosis. Refer to RFD-89, "SELF-DIAG RESULTS MODE". [1][2][3]Diagnostic Trouble Code Descriptions
Is "RELAY [P1844]" displayed?
YES >> Perform trouble diagnosis for differential lock solenoid. Refer to RFD-100, "Differential Lock Solenoid". Differential Lock Solenoid
NO >> GO TO 2.
2. CHECK DIFFERENTIAL LOCK SOLENOID RELAY SIGNAL

With CONSULT-II
1. Start engine.
2. Select "DATA MONITOR" mode for "DIFF LOCK" with CONSULT-II.





3. Read out ON/OFF switching action of "RELAY ON".





OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK DIFFERENTIAL LOCK CONTROL UNIT
Check differential lock control unit input/output signal.
OK or NG
OK >> GO TO 4.
NG >> Check differential lock control unit pin terminals for damage or loose connection with harness connector. If any item is damaged, repair or replace damaged parts.
4. CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >> Inspection End.
NG >> Replace differential lock control unit.