Honda Ridgeline. Manual — part 265
01
02
03
SJC8A00E44381000000FAAT03
−
−
−
−
−
−
The VTM-4 indicator does not come on
YES
NO
YES
NO
YES
NO
15-42
Rear Differential
Symptom Troubleshooting (cont’d)
VTM-4 CONTROL UNIT CONNECTORS
WARN 1
(RED/WHT)
B (12P)
A (22P)
WARN 2
(RED/WHT)
JUMPER WIRE
JUMPER WIRE
RED/WHT
JUMPER WIRE
GAUGE CONTROL MODULE CONNECTOR C (20P)
VTM-4 CONTROL UNIT CONNECTORS
WARN 1
(RED/WHT)
B (12P)
A (22P)
WARN 2
(RED/WHT)
1. Do the gauge control module self-diagnosis
function (see page 22-244).
Go to step 2.
Go to the gauge control module input test
(see page 22-244) and check for an open or short in
the power and ground.
2. Disconnect the VTM-4 control unit connectors A
(22P) and B (12P).
3. Connect the No. 14 terminal of the VTM-4 control
unit connector A (22P) and No. 11 terminal of the
VTM-4 control unit connector B (12P) to body
ground with jumper wires.
4. Turn the ignition switch ON (II).
5. Watch the VTM-4 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 6.
6. Turn the ignition switch OFF.
7. Disconnect gauge control module connector A
(30P).
8. Connect the No. 3 terminal of the gauge control
module connector C (20P) to body ground with a
jumper wire.
9. Check for continuity between the No. 14 terminal of
the VTM-4 control unit connector A (22P) and body
ground, and the No. 11 terminal of the VTM-4
control unit connector B (12P) and body ground.
Substitute a known-good gauge control
module and recheck. If the symptom/indication
goes away with the known-good gauge control
module, replace the original gauge control module
(see page 22-263).
Repair open in the wire between the gauge
control module (C3) and the VTM-4 control unit.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is the gauge contr ol module OK ?
Does the V T M-4 indicator come on?
Is ther e continuity?
03
SJC8A00E44381000000FAAT04
−
−
−
−
−
−
−
−
−
−
−
−
The VTM-4 LOCK indicator does not come on
when the VTM-4 LOCK switch is pressed
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
15-43
VTM-4 CONTROL UNIT CONNECTOR A (22P)
LOCKSW (BRN/WHT)
NOTE: The VTM-4 LOCK indicator will only come on
when the engine is running and the transmission is in
R, 1, or 2 before the VTM-4 LOCK switch is pressed.
1. Check the No. 21 (7.5 A) fuse in the driver’s under-
dash fuse/relay box.
Go to step 2.
Replace the fuse, and recheck.
2. Turn the ignition switch ON (II).
3. Watch the VTM-4 LOCK indicator.
Go to step 4.
Go to step 11.
4. Start the engine, and move the shift lever to R, 1,
and 2, then watch the VTM-4 LOCK indicator.
The system is OK at this time.
Go to step 5.
5. Check for an A/T system DTC.
Troubleshoot the A/T system indicated
DTC.
Go to step 6.
6. Turn the ignition switch OFF.
7. Disconnect the VTM-4 control unit connector A
(22P).
8. Turn the ignition switch ON (II).
9. Connect a voltmeter between the A8 terminal of the
VTM-4 control unit and body ground.
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 10.
10. Test the VTM-4 LOCK switch (see page 15-49).
Repair open in the wire between the VTM-4
LOCK switch and the VTM-4 control unit (see page
15-50).
Replace the VTM-4 LOCK switch.
(cont’d)
Wire side of female terminals
Is the f use OK ?
Does the V T M-4 LOCK indicator come on, and
does it go of f about 4 seconds later ?
Does the V T M-4 LOCK indicator come on when
the V T M-4 LOCK switch is pr essed?
Is ther e a DT C?
Is ther e batter y voltage when the V T M-4 LOCK
switch is pr essed?
Is the V T M-4 LOCK switch OK ?
04
*01
02
*02
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
15-44
Rear Differential
Symptom Troubleshooting (cont’d)
VTM-4 CONTROL UNIT CONNECTOR A (22P)
LOCKH (YEL/BLK)
JUMPER WIRE
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
11. Connect the No. 16 terminal of the VTM-4 control
unit connector A (22P) to body ground with a
jumper wire.
12. 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 13.
13. Turn the ignition switch OFF.
14. Remove the VTM-4 LOCK switch.
15. Connect the No. 5 terminal of the VTM-4 LOCK
switch 6P connector to body ground with a jumper
wire.
16. Check the continuity between the No. 16 terminal
of the VTM-4 control unit connector A (22P) and
body ground.
Go to step 17.
Repair open in the wire between the VTM-4
control unit (A16) and the VTM-4 LOCK switch.
17. Turn the ignition switch ON (II).
18. 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
Wire side of female terminals
Wire side of female terminals
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?
03
SJC8A00E44381000000FAAT05
−
−
−
−
The VTM-4 LOCK indicator comes on when
the ignition switch is turned ON (II) and does
not go off
YES
NO
YES
NO
15-45
VTM-4 CONTROL UNIT CONNECTOR A (22P)
LOCKH
(YEL/BLK)
1. Disconnect the VTM-4 control unit connector A
(22P).
2. Turn the ignition switch ON (II).
3. Watch the VTM-4 LOCK indicator.
Go to step 4.
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).
4. Turn the ignition switch OFF.
5. Disconnect the VTM-4 LOCK switch 6P connector.
6. Check for continuity between the No. 16 terminal of
the VTM-4 control unit connector A (22P) and body
ground.
Repair short to ground in the wire between
the VTM-4 control unit (A16) and the VTM-4 LOCK
switch.
Replace the VTM-4 LOCK switch (see page
15-49).
Wire side of female terminals
Does the V T M-4 LOCK indicator come on?
Is ther e continuity?
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