DTC P1887:11/P1887:12/P1887:13/P1887:14 [4WD CONTROL MODULE]

id0302d2200500

DTC P1887:11

4WD solenoid circuit

DTC P1887:12

DTC P1887:13

DTC P1887:14

DETECTION CONDITION

•  P1887:11

―  Short circuit to ground is detected in 4WD solenoid circuit

•  P1887:12

―  Short to battery is detected in 4WD solenoid circuit

•  P1887:13

―  Open circuit is detected in 4WD solenoid circuit

•  P1887:14

―  Open circuit or short to ground is detected in power supply circuit

FAIL-SAFE FUNCTION

•  Control disabled.

•  4WD warning light: Illuminated

POSSIBLE CAUSE

•  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 between 4WD control module terminal N and body ground

•  Open circuit or short to ground in harness between battery and 4WD control module terminal K

•  Open or short circuit in 4WD control module internal circuit

•  AT 15 A fuse malfunction

•  4WD control module malfunction

•  Poor connection of connectors (female terminals)

Diagnostic procedure

Step	Inspection		Action
1	INSPECT 4WD SOLENOID • Inspect the 4WD solenoid. (See 4WD SOLENOID INSPECTION.) • Is there any malfunction?	Yes	Replace the coupling component, then go to Step 9. (See COUPLING COMPONENT REMOVAL/INSTALLATION.)
1		No	Go to the next step.
2	INSPECT 4WD SOLENOID POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Switch the ignition off. • Disconnect the 4WD control module connector. (See 4WD CONTROL MODULE REMOVAL/INSTALLATION.) • Disconnect the 4WD solenoid connector. (See COUPLING COMPONENT REMOVAL/INSTALLATION.) • Inspect for continuity between 4WD control module terminal O (wiring harness-side) and 4WD solenoid terminal A (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
2		No	Refer to the wiring diagram and verify whether or not there is a common connector between 4WD control module terminal O and 4WD solenoid terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 9.
3	INSPECT 4WD SOLENOID POWER SUPPLY CIRCUIT FOR SHORT TO GROUND • Verify that the 4WD solenoid and 4WD control module connectors are disconnected. • Inspect for continuity between 4WD control module terminal O (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between 4WD control module terminal O and 4WD solenoid terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 9.
3		No	Go to the next step.
4	INSPECT 4WD SOLENOID GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the 4WD solenoid and 4WD control module connectors are disconnected. • Inspect for continuity between 4WD control module terminal P (wiring harness-side) and 4WD solenoid terminal B (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify whether or not there is a common connector between 4WD control module terminal P and 4WD solenoid terminal B. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 9.
5	INSPECT 4WD SOLENOID GROUND CIRCUIT FOR SHORT TO GROUND • Verify that the 4WD solenoid and 4WD control module connectors are disconnected. • Inspect for continuity between 4WD control module terminal P (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between 4WD control module terminal P and 4WD solenoid terminal B. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 9.
5		No	Go to the next step.
6	INSPECT 4WD CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the 4WD control module connector is disconnected. • Measure the voltage between 4WD control module terminal N (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify whether or not there is a common connector between 4WD control module terminal N and body ground. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 9.
7	INSPECT 4WD CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND • Verify that the 4WD solenoid and 4WD control module connectors are disconnected. • Measure the voltage between 4WD control module terminal K (wiring harness-side) and body ground. • Is the voltage B+?	Yes	Replace the 4WD control module, then go to Step 9. (See 4WD CONTROL MODULE REMOVAL/INSTALLATION.)
7		No	Go to the next step.
8	INSPECT FUSE CONDITION • Is the AT 15 A fuse normal?	Yes	Go to the next step.
8	INSPECT FUSE CONDITION • Is the AT 15 A fuse normal?	No	• 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: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Replace the fuse. • If the fuse is damaged: ― Replace the fuse. Go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED • Using the M-MDS, clear the DTC from the 4WD control module. (See CLEARING DTC [4WD CONTROL MODULE].) • Drive the vehicle. • Using the M-MDS, perform the 4WD control module DTC inspection. (See DTC INSPECTION [4WD CONTROL MODULE].) • Is the same Pending DTC present?	Yes	Replace the 4WD control module, then go to the next step. (See 4WD CONTROL MODULE REMOVAL/INSTALLATION.)
9		No	Go to the next step.
10	VERIFY NO DTC IS PRESENT • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [4WD CONTROL MODULE].)
10	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.

DTC P1887:11		4WD solenoid circuit
DTC P1887:12
DTC P1887:13
DTC P1887:14
DETECTION CONDITION		• P1887:11 ― Short circuit to ground is detected in 4WD solenoid circuit • P1887:12 ― Short to battery is detected in 4WD solenoid circuit • P1887:13 ― Open circuit is detected in 4WD solenoid circuit • P1887:14 ― Open circuit or short to ground is detected in power supply circuit
FAIL-SAFE FUNCTION		• Control disabled. • 4WD warning light: Illuminated
POSSIBLE CAUSE		• 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 between 4WD control module terminal N and body ground • Open circuit or short to ground in harness between battery and 4WD control module terminal K • Open or short circuit in 4WD control module internal circuit • AT 15 A fuse malfunction • 4WD control module malfunction • Poor connection of connectors (female terminals)