2-4WD Solenoid

2-4WD Solenoid

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE:

TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE:

CAUTION: When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

DIAGNOSTIC PROCEDURE

1. CHECK 4WD SHIFT SWITCH SYSTEM
Perform self-diagnosis. Refer to TF-50, "Self-diagnostic Procedure".
Is the "4WD MOD SW [P1814]" (with CONSULT-II) or "Flickering pattern: 16 (without CONSULT-II) detected?
YES >> Perform trouble diagnosis for 4WD shift switch. Refer to TF-62, "4WD Shift Switch". 4WD Shift Switch
NO >> GO TO 2.

2. CHECK 2-4WD SHIFT SOLENOID SIGNAL

With CONSULT-II
1. Start engine.
2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.








3. Read out the value of "2-4WD SOL" and "2-4WD SOL MON".

WITHOUT CONSULT-II
1. Start engine.








2. Check voltage between transfer control unit harness connector terminal and ground.
OK or NG
OK >> GO TO 7.
NG >> GO TO 3.

3. CHECK 4WD SHIFT SWITCH SIGNAL
1. Turn ignition switch "ON". (Do not start engine.)








2. Check voltage between transfer control unit harness connector terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> Check 4WD shift switch. Refer to TF-66, "COMPONENT INSPECTION". 4WD Shift Switch

4. CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER TERMINAL CORD ASSEMBLY
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect 4WD shift switch harness connector and transfer terminal cord assembly harness connector.





3. Check continuity between 4WD shift switch harness connector M141 terminal 4 and transfer terminal cord assembly harness connector F56 terminal 5.
Continuity should exist.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.

5. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER TERMINAL CORD ASSEMBLY
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and transfer terminal cord assembly harness connector.





3. Check continuity between transfer control unit harness connector E142 terminal 1 and transfer terminal cord assembly harness connector F56 terminal 4.
Continuity should exist.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.

6. CHECK 2-4WD SOLENOID
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.





3. Check resistance between transfer terminal cord assembly terminals 4 and 5.
4 - 5: approximately 22.8 - 25.2 ohms
OK or NG
OK >> GO TO 7.
NG >> Replace 2-4WD solenoid.

7. CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to TF-35, "Transfer Control Unit Input/Output Signal Reference Values". Pinout Values and Diagnostic Parameters
OK or NG
OK >> GO TO 8.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

8. CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >> Inspection End.
NG >> Replace transfer control unit.

COMPONENT INSPECTION
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.





3. Check resistance between transfer terminal cord assembly terminals 4 and 5.
4 - 5: approximately 22.8 - 25.2 ohms
4. If NG, replace the 2-4WD solenoid.