DTC P1887:11/P1887:12/P1887:13/P1887:14 [ELECTRONIC 4WD CONTROL SYSTEM]
id0302a6200500
DTC P1887:11
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4WD solenoid circuit
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DTC P1887:12
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DTC P1887:13
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DTC P1887:14
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DETECTION CONDITION
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• P1887:11
• P1887:12
• P1887:13
• P1887:14
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FAIL-SAFE FUNCTION
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• Control disabled.
• 4WD warning light: Illuminated
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POSSIBLE CAUSE
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• 4WD solenoid malfunction
• Open circuit or short to ground between 4WD control module terminal O and 4WD solenoid terminal A
• Open circuit or short to ground between 4WD control module terminal P and 4WD solenoid terminal B
• Open circuit or short to ground in harness between battery and 4WD control module terminal K
• Open circuit between 4WD control module terminal N and body ground
• Open or short circuit in 4WD control module internal circuit
• AT (15A) fuse malfunction
• 4WD control module malfunction
• Poor connection of connectors (female terminals)
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SYSTEM WIRING DIAGRAM
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Diagnostic procedure
STEP |
INSPECTION |
ACTION |
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1
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INSPECT 4WD SOLENOID CONDITION
• Switch the ignition to off.
• Disconnect 4WD solenoid connector.
• Inspect 4WD solenoid.
(See 4WD SOLENOID INSPECTION.)
• Is 4WD solenoid normal?
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Yes
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Go to next step.
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No
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Replace 4WD solenoid, then go to Step 8.
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2
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INSPECT 4WD SOLENOID TO 4WD CONTROL MODULE (POWER SUPPLY CIRCUIT) FOR OPEN CIRCUIT
• Disconnect 4WD control module connector.
• Inspect for continuity between 4WD control module terminal O and 4WD solenoid terminal A.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair or replace harness for open circuit between 4WD control module and 4WD solenoid, then go to Step 8.
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3
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INSPECT 4WD SOLENOID TO 4WD CONTROL MODULE (POWER SUPPLY CIRCUIT) FOR SHORT TO GROUND
• Inspect for continuity between 4WD control module terminal O and ground.
• Is there continuity?
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Yes
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Repair or replace harness for short to ground between 4WD control module and 4WD solenoid, then go to Step 8.
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No
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Go to next step.
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4
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INSPECT 4WD SOLENOID TO 4WD CONTROL MODULE (GROUND CIRCUIT) FOR OPEN CIRCUIT
• Inspect for continuity between 4WD control module terminal P and 4WD solenoid terminal B.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair or replace harness for open circuit between 4WD control module and 4WD solenoid, then go to Step 8.
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5
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INSPECT 4WD SOLENOID TO 4WD CONTROL MODULE (GROUND CIRCUIT) FOR SHORT TO GROUND
• Inspect for continuity between 4WD control module terminal P and ground.
• Is there continuity?
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Yes
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Repair or replace harness for short to ground between 4WD control module and 4WD solenoid, then go to Step 8.
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No
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Go to next step.
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6
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INSPECT 4WD CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND
• Measure voltage between 4WD control module terminal K and ground.
• Is voltage B+?
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Yes
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Replace 4WD control module, then go to Step 9.
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No
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Go to next step.
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7
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INSPECT FUSE CONDITION
• Switch the ignition to off.
• Is AT (15A) fuse normal?
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Yes
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Repair or replace harness for open circuit between battery and 4WD control module, then go to next step.
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No
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If the fuse is blown:
• Refer to the wiring diagram and verify whether or not there is a common connector between fuse and 4WD control module terminal K.
If there is a common connector:
If there is no common connector:
If the fuse is damaged:
• Replace the fuse.
Go to the next step.
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8
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VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory.
• Drive vehicle.
• Using the M-MDS, perform the 4WD control module DTC inspection.
• Is the same DTC present?
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Yes
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Replace 4WD control module, then go to next step.
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No
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Go to next step.
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9
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VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
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Yes
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Go to applicable DTC inspection.
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No
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Troubleshooting completed.
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