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Honda Ridgeline. Manual - part 266

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−

The VTM-4 LOCK indicator does not come on
for about 4 seconds when the ignition switch
is turned ON (II)

YES

15-46

Rear Differential

Symptom Troubleshooting (cont’d)

VTM-4 CONTROL UNIT CONNECTOR A (22P)

LOCKH
(YEL/BLK)

JUMPER WIRE

YEL/BLK

VTM-4 LOCK SWITCH 6P CONNECTOR

LOCKH (YEL/BLK)

VTM-4 CONTROL UNIT CONNECTOR A (22P)

YEL

VTM-4 LOCK SWITCH 6P CONNECTOR

1. Disconnect the VTM-4 control unit connector A

(22P).

2. Turn the ignition switch ON (II).

3. Connect the No. 16 terminal of the VTM-4 control

unit connector A (22P) to body ground with a
jumper wire.

4. Watch the VTM-4 LOCK indicator.

Check for poor connections or loose

terminals at the VTM-4 control unit connectors. If
the connections are OK, replace the VTM-4 control
unit (see page 15-50).

Go to step 5.

5. Turn the ignition switch OFF.

6. Remove the VTM-4 LOCK switch.

7. Connect the No. 5 terminal of the VTM-4 LOCK

switch 6P connector to body ground with a jumper
wire.

8. Check for continuity between the No. 16 terminal of

the VTM-4 conntrol unit connector A (22P) and
body ground.

Go to step 9.

Repair open in the wire between the VTM-4

control unit (A16) and the VTM-4 LOCK switch.

9. Turn the ignition switch ON (II).

10. Measure voltage between the No. 2 terminal of the

VTM-4 LOCK switch 6P connector and body ground.

Replace the VTM-4 LOCK indicator bulb.

Repair open in the wire between the No. 2

terminal of the VTM-4 LOCK switch 6P connector
and the driver’s under-dash fuse/relay box.

Wire side of female terminals

Does the V T M-4 LOCK indicator come on?

Is ther e continuity?

Is ther e batter y voltage?

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Fluid capacity:

2.64 L (2.79 US.qt) at fluid change

Recommended fluid:

VTM-4 Differential Fluid (P/N 0822-9003)

15-47

Rear Differential Fluid Inspection and Replacement

A
47 N·m
(4.8 kgf·m,
35 lbf·ft)

D
47 N·m
(4.8 kgf·m,
35 lbf·ft)

1. With the vehicle on level ground, inspect the

differential fluid with the ignition switch OFF.

2. Remove the oil filler plug (A) and sealing washer

(B), then check the condition of the fluid, and make
sure the fluid is at the proper level (C).

3. The fluid level must be up to the fill hole. If it is

below the hole, add the recommended fluid until it
runs out, then reinstall the oil filler plug with a new
sealing washer.

4. If the differential fluid is dirty, remove the drain

plug (D) and sealing washer (B), then drain the fluid.

5. Clean the drain plug, then reinstall with a new

washer, and refill the differential with the
recommended fluid to the proper level.

6. Reinstall the oil filler plug with a new washer.

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15-48

Rear Differential

Rear Differential Function Test

NOTE: Before doing the Differential Function Test, the following conditions must be present.

• No DTCs detected
• Engine is OFF
• The VTM-4 control unit must be initialized

1. Connect the HDS to the data link connector (DLC).

2. Turn the ignition switch ON (II).

3. Make sure the HDS communicates with the VTM-4 control unit. If it doesn’t go to the DLC circuit troubleshooting

(see page 11-194).

4. Confirm that the temperature of the differential oil is between 68 °F (20 °C) and 140 °F (60 °C) with the HDS.

5. Turn the ignition switch OFF with the shift lever in P.

6. Raise the vehicle so all four wheels are off the ground, and make sure the vehicle is securely supported (see page

1-10).

7. Remove the rear wheels (see page 18-28).

8. Release the parking brake.

9. Turn the iginition switch ON (II).

10. Select MISCELLANEOUS TEST, then select the LEFT CLUTCH ELECTROMAGNETIC COIL TEST with the HDS, and

follow the screen prompts. If the results are NORMAL, the left clutch is OK, go to step 11. If the results are
ABNORMAL, replace the rear differential.

11. Select MISCELLANEOUS TEST, then select the RIGHT CLUTCH ELECTROMAGNETIC COIL TEST with the HDS,

and follow the screen prompts. If the results are NORMAL, the right clutch is OK. If the results are ABNORMAL,
replace the rear differential.

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15-49

Rear Differential Fluid Temperature
Sensor Replacement

VTM-4 LOCK Switch Test/
Replacement

6 x 1.0 mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft)

C
18 N·m
(1.8 kgf·m, 13 lbf·ft)

Terminal

Position

Release the switch

Press the switch

1. Remove the wire harness cover (A), then

disconnect the differential oil temperature sensor
2P connector (B).

2. Remove the differential oil temperature sensor (C).

3. Install the differential oil temperature sensor in the

reverse order of removal, with a new O-ring (D).

1. Remove the instrument panel (see page 20-81).

2. Disconnect the 5P connector (A) from the VTM-4

LOCK switch (B), then remove the VTM-4 LOCK
switch.

3. Check for continuity between the terminals in each

switch position according to the table.

4. If the continuity check is not as specified, replace

the bulbs (C) or the VTM-4 LOCK switch.

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