DTC P1887SM2445072
DTC P1887

id030200800300

DTC
P1887
4WD solenoid circuit
DETECTION CONDITION
• Current detection circuit in 4WD CM detects current above specification for more than specified period.
• 4WD CM detects that 4WD solenoid control signal differs from current detected at current detection circuit for more than specified period.
• Relay voltage detection circuit detects that voltage does not concur with relay ON/OFF signal for more than specified period.
POSSIBLE CAUSE
• 4WD solenoid malfunction
• Open circuit or short to ground between 4WD CM terminal O and 4WD solenoid terminal B
• Open circuit or short to ground between 4WD CM terminal P and 4WD solenoid terminal A
• Open circuit or short to ground in harness between battery and 4WD CM terminal K
• Open circuit between 4WD CM terminal N and body ground
• Open or short circuit in 4WD CM internal circuit
• ENG B+ (25A) (L3 Turbo) or ENG B+ (15A) (MZR-CD 2.2) fuse malfunction
• 4WD CM malfunction
• Poor connection of connectors (female terminals)

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT 4WD SOLENOID CONDITION
• Switch the ignition to OFF.
• Disconnect 4WD solenoid connector.
• Inspect 4WD solenoid. (See 4WD SOLENOID INSPECTION.)
• Is 4WD solenoid normal?
Yes
Go to next step.
No
Replace 4WD solenoid, then go to Step 7.
2
INSPECT 4WD SOLENOID TO 4WD CM (POWER SUPPLY CIRCUIT) FOR OPEN CIRCUIT
• Disconnect 4WD CM connector.
• Inspect for continuity between 4WD CM terminal O and 4WD solenoid terminal B.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open circuit between 4WD CM and 4WD solenoid, then go to Step 7.
3
INSPECT 4WD SOLENOID TO 4WD CM (POWER SUPPLY CIRCUIT) FOR SHORT TO GROUND
• Inspect for continuity between 4WD CM terminal O and ground.
• Is there continuity?
Yes
Repair or replace harness for short to ground between 4WD CM and 4WD solenoid, then go to Step 7.
No
Go to next step.
4
INSPECT 4WD SOLENOID TO 4WD CM (GROUND CIRCUIT) FOR OPEN CIRCUIT
• Inspect for continuity between 4WD CM terminal P and 4WD solenoid terminal A.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open circuit between 4WD CM and 4WD solenoid, then go to Step 7.
5
INSPECT 4WD SOLENOID TO 4WD CM (GROUND CIRCUIT) FOR SHORT TO GROUND
• Inspect for continuity between 4WD CM terminal P and ground.
• Is there continuity?
Yes
Repair or replace harness for short to ground between 4WD CM and 4WD solenoid, then go to Step 7.
No
Go to next step.
6
INSPECT 4WD CM POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
• Measure voltage between 4WD CM terminal K and ground.
• Is voltage B+?
Yes
Replace 4WD CM, then go to Step 9.
(See 4WD CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to next step.
7
INSPECT FUSE CONDITION
• Switch the ignition to OFF.
• Is ENG B+ (25A) (L3 Turbo) or ENG B+ (15A) (MZR-CD 2.2) fuse normal?
Yes
Repair or replace harness for open circuit between battery and 4WD CM, then go to next step.
No
Replace fuse, then go to next step.
8
VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory. (See ELECTRONIC 4WD CONTROL SYSTEM ON-BOARD DIAGNOSIS.)
• Drive vehicle.
• Is the same DTC present?
Yes
Replace 4WD CM, then go to next step.
(See 4WD CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to next step.
9
VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.