DTC C1852-18 (62-01) (AWD)
DTC C1852-18 : Solenoid Valve Circuit Low Current
NOTE: Before you troubleshoot, review the General Troubleshooting Information .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| C1852-18 Solenoid Valve Circuit Low Current |
DTC (Real Time AWD)
- Problem verification (with engine idling)
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Start the engine.
-5. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1852-18 Solenoid Valve Circuit Low Current Is DTC C1852-18 indicated?
YES
The failure is duplicated. Go to step 3.
NO
Go to step 2.
- Problem verification (with rear differential pump motor running)
-1. Clear the DTC with the HDS.
-2. Turn the vehicle to the OFF (LOCK) mode.
-3. Turn the vehicle to the ON mode.
-4. Select the ADJUSTMENT in the REAL TIME AWD with the HDS.
-5. With the engine running, do the AIR BLEEDING in the ADJUSTMENT with the HDS .
Air Bleeding
Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1852-18 Solenoid Valve Circuit Low Current Is DTC C1852-18 indicated?
YES
The failure is duplicated. Go to step 3.
NO
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- Determine possible failure area (D-GND line, others)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the rear differential subharness D-GND wire terminal from the rear differential assembly.
-3. Check for continuity between the following test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Rear differential subharness D-GND wire terminal: disconnected Test point 1 Rear differential subharness D-GND wire terminal Test point 2 Body ground Is there continuity?
YES
Go to step 4.
NO
Repair an open in the D-GND wires between the AWD control unit and ground (G503).
- Determine possible failure area (D-GND2 line, others)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the rear differential subharness D-GND2 wire terminal from the rear differential assembly.
-3. Check for continuity between the following test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Rear differential subharness D-GND2 wire terminal: disconnected Test point 1 Rear differential subharness D-GND2 terminal Test point 2 Body ground Is there continuity?
YES
Go to step 5.
NO
Repair an open in the D-GND2 wires between the AWD control unit and ground (G503).
- Determine possible failure area (DTYH1 line, others)
-1. Turn the vehicle to the OFF (LOCK) mode
-2. Disconnect the following connector.
Rear differential solenoid valve 1P connector -3. Turn the vehicle to the ON mode.
-4. Wait for 10 seconds.
-5. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Rear differential solenoid valve 1P connector: disconnected Test point 1 Rear differential solenoid valve 1P connector (female terminals) No. 1: Test point 2 Body ground Is there about 0.1 V or less?
YES
Go to step 7.
NO
Go to step 6.
- Shorted wire check (DTYH1 line to power)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
AWD control unit 24P connector -3. Turn the vehicle to the ON mode.
-4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Rear differential solenoid valve 1P connector: disconnected AWD control unit 24P connector: disconnected Test point 1 Rear differential solenoid valve 1P connector (female terminals) No. 1: Test point 2 Body ground Is there about 0.1 V or less?
YES
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good real time AWD control unit , and recheck. If the symptom/indication goes away with a known-good AWD control unit, replace the original AWD control unit .
NO
Repair a short to power in the DTYH1 wire between the rear differential solenoid valve and the AWD control unit.
- Rear differential solenoid valve check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. On the solenoid valve side, measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Rear differential solenoid valve 1P connector: disconnected Test point 1 Rear differential solenoid valve 1P connector (male terminals) No. 1: Test point 2 Rear differential solenoid valve body Is there about 100 Ω or less?
YES
The rear differential solenoid valve is OK. Go to step 8.
NO
- Shorted wire check (DTYH1 line)
-1. Disconnect the following connector.
AWD control unit 24P connector -2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Rear differential solenoid valve 1P connector: disconnected AWD control unit 24P connector: disconnected Test point 1 AWD control unit 24P connector No. 15 Test point 2 Body ground Is there continuity?
YES
Repair a short to ground in the DTYH1 wire between the rear differential solenoid valve and the AWD control unit.
NO
The DTYH1 wire is not shorted. Go to step 9.
- Open wire check (DTYH1 line)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Rear differential solenoid valve 1P connector: disconnected AWD control unit 24P connector: disconnected Test point 1 Rear differential solenoid valve 1P connector (female terminals) No. 1: Test point 2 AWD control unit 24P connector No. 15 Is there continuity?
YES
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good AWD control unit , and recheck. If the symptom/indication goes away with a known-good AWD control unit, replace the original AWD control unit .
NO
Repair an open in the DTYH1 wire between the rear differential solenoid valve and the AWD control unit.