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 GND between 4WD CM terminal O and 4WD solenoid terminal B

•  Open circuit or short to GND between 4WD CM terminal P and 4WD solenoid terminal A

•  ENG B+ (10A) fuse malfunction

•  Open circuit or short to GND in harness between battery and 4WD CM terminal K

•  Open or short circuit in 4WD CM internal circuit

•  4WD CM malfunction

•  Poor connection of connectors (female terminals)

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT 4WD SOLENOID TO 4WD CM (POWER SUPPLY CIRCUIT) FOR OPEN CIRCUIT • Disconnect the 4WD CM connector. • Disconnect the 4WD solenoid connector. • Inspect for continuity between the 4WD CM terminal O (harness-side) and the 4WD solenoid terminal B (harness-side). • Is there continuity?	Yes	Go to the next step.
1		No	Repair or replace the harness for open circuit between the 4WD CM and the 4WD solenoid, then go to Step 7.
2	INSPECT 4WD SOLENOID TO 4WD CM (POWER SUPPLY CIRCUIT) FOR SHORT TO GROUND • Inspect for continuity between the 4WD CM terminal O (harness-side) and ground. • Is there continuity?	Yes	Repair or replace the harness for short to ground between the 4WD CM and the 4WD solenoid, then go to Step 7.
2		No	Go to the next step.
3	INSPECT 4WD SOLENOID TO 4WD CM (GROUND CIRCUIT) FOR OPEN CIRCUIT • Inspect for continuity between the 4WD CM terminal P (harness-side) and the 4WD solenoid terminal A (harness-side). • Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the harness for open circuit between the 4WD CM and the 4WD solenoid, then go to Step 7.
4	INSPECT 4WD SOLENOID TO 4WD CM (GROUND CIRCUIT) FOR SHORT TO GROUND • Inspect for continuity between the 4WD CM terminal P (harness-side) and ground. • Is there continuity?	Yes	Repair or replace the harness for short to ground between the 4WD CM and the 4WD solenoid, then go to Step 7.
4		No	Go to the next step.
5	INSPECT 4WD SOLENOID CONDITION • Inspect the 4WD solenoid. (See 4WD SOLENOID INSPECTION) • Is it normal?	Yes	Go to the next step.
5		No	Replace the coupling component, then go to Step 7. (See COUPLING COMPONENT REMOVAL/INSTALLATION.) (See COUPLING COMPONENT DISASSEMBLY.) (See COUPLING COMPONENT ASSEMBLY.)
6	INSPECT FUSE CONDITION • Is the ENG B+ (10A) fuse normal?	Yes	Go to the next step.
6	INSPECT FUSE CONDITION • Is the ENG B+ (10A) fuse normal?	No	Replace the fuse, then go to Step 9.
7	INSPECT 4WD CM POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Measure voltage between the 4WD CM terminal K (harness-side) and ground. • Is voltage B+?	Yes	Go to the next step.
7		No	Repair or replace the harness for open circuit between the 4WD CM and the battery, then go to next step.
8	INSPECT 4WD CM GROUND CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the 4WD CM terminal N (harness-side) and ground. • Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the harness for open circuit between the 4WD CM and ground, then go to next step.
9	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 the 4WD CM, then go to next step. (See 4WD CONTROL MODULE REMOVAL/INSTALLATION.)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Is there any other DTC present?	Yes	Go to applicable DTC inspection.
10		No	Troubleshooting completed.

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 GND between 4WD CM terminal O and 4WD solenoid terminal B • Open circuit or short to GND between 4WD CM terminal P and 4WD solenoid terminal A • ENG B+ (10A) fuse malfunction • Open circuit or short to GND in harness between battery and 4WD CM terminal K • Open or short circuit in 4WD CM internal circuit • 4WD CM malfunction • Poor connection of connectors (female terminals)