C1870-00
(77)
C1871-00
(77)
C1872-00
(77)
C1873-00
(16)
U0100-00
(41)
U0101-00
(41)
U0122-00
(41)
U0126-00
(41)
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
Fuel and Emissions Related Malfunction
Automatic Transmission Related Malfunction
VSA Modulator-Control Unit Related Malfunction
Steering Angle Sensor Malfunction
F-CAN Malfunction (Lost Communication with Powertrain Control
Module (PCM))
F-CAN Malfunction (Lost Communication with A/T Control
System)
F-CAN Malfunction (Lost Communication with VSA Modulator-
Control Unit)
F-CAN Malfunction (Lost Communication with Steering Angle
Sensor)
U3000-49
(78)
U3000-51
(91)
Control Module Internal Control Module Malfunction
Control Module Programming Error
ABNORMAL NOISE
Fig. 65: Real Time AWD System Symptom Troubleshooting Chart (Abnormal Noise)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
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Before you troubleshoot, REVIEW THE HOW TO TROUBLESHOOT THE
REAL TIME AWD SYSTEM.
If necessary, comparison the noise with a know-good vehicle of the same
type, if the noise is remarkably abnormal, do the following
troubleshooting.
1. Problem verification 1 (abnormal noise check):
1. Test-drive the vehicle and check for abnormal noise.
ο‘
Did abnormal noise reappear?
YES : Go to step 2.
NO : Check the following items.
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Check the rear differential fluid level and the fluid condition.
Check for rear differential fluid leaks.
Check for interference with items such as the harness.
Rotate either rear wheel by hand, and check that the other wheel rotates.
DO THE OIL PRESSURE CONTROL TEST IN THE FUNCTIONAL TEST MENU WITH
THE HDS .
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DO THE REAR DIFFERENTIAL FLUID PRESSURE SENSOR TEST .
2. Rear differential visual check:
1. Check the following items.
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Check the rear differential fluid level and the fluid condition.
Check for rear differential fluid leaks.
Check the interference such as the harness.
Is the check result OK?
YES : Go to step 3.
NO : REPLACE THE REAR DIFFERENTIAL FLUID OR ADD RECOMMENDED FLUID .
3. Problem verification (rear differential companion flange rotate check):
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1. Release the parking brake.
2. Shift the transmission to N.
3. Raise the vehicle on a lift.
4. Make a reference mark (A) across the propeller shaft and the rear companion flange.
Fig. 66: Identifying Propeller Shaft Reference Mark
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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5. Remove the propeller shaft mounting bolts from the rear differential companion flange.
6. Rotate the companion flange by hand.
Can the rear differential companion flange be rotated smoothly by hand?
YES : Go to step 4.
NO : Replace the Rear Differential Housing Assembly Removal and Installation
4. Rear differential operation check:
ο‘
1. Rotate either rear wheel by hand, and check that the other wheel rotates.
Does the other wheel rotate?
YES : Go to step 5.
NO : Replace the Rear Differential Housing Assembly Removal and Installation
5. Torque control differential (TCD) assembly check:
ο‘
1. Realign the reference mark (A) on the propeller shaft and the rear differential companion flange,
then install new flange bolts (B).
Fig. 67: Identifying Propeller Shaft Reference Mark With Flange Bolt And Torque
Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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2. Remove the following fuse.
Fuse No. A1-5 (30 A)
Location Under-food fuse/relay box
3. Test-drive the vehicle on the lift.
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Is the abnormal noise still present?
YES : Replace the Rear Differential Housing Assembly Removal and Installation .
NO : Go to step 6.
6. Rear differential solenoid valve check:
ο‘
1. Do the SOLENOID TEST LEVEL 7, and then do SOLENOID TEST LEVEL 1 with the HDS.
Did abnormal noise happen when testing LEVEL 7 to LEVEL 1?
YES : Replace the rear differential solenoid valve. Go to Rear Differential Solenoid Valve
NO : Go to step 7.
7. Rear differential pump motor check:
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1. Do the Air Bleeding in the Adjustment Menu with the HDS.
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2. Listen for any abnormal noise coming from the rear differential pump motor.
Did abnormal noise happen while doing Air Bleeding?
YES : REPLACE THE REAR DIFFERENTIAL PUMP MOTOR .
NO : Go to step 8.
8. Problem verification 2 (abnormal noise check):
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1. REPLACE THE REAR DIFFERENTIAL FLUID .
2. Do the Air Bleeding in the Adjustment Menu with the HDS.
3. Test-drive the vehicle on the lift.
YES : Replace the Rear Differential Housing Assembly Removal and Installation
NO : Intermittent failure, the system is OK at this time.
AWD SYSTEM INDICATOR DOES NOT COME ON
Fig. 68: Real Time AWD System Symptom Troubleshooting (AWD System Indicator Not Come On)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Before you troubleshoot, REVIEW THE HOW TO TROUBLESHOOT THE REAL
TIME AWD SYSTEM.
1. Problem verification:
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual
