Acura RSX Honda Integra. Manual — part 215
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13-75
Reverse Lockout System
Component Location Index
ENGINE CONTROL MODULE (ECM)
NOTE: 6-speed model has reverse lockout system. 5-speed model does not have this system.
REVERSE LOCKOUT SOLENOID
Test, page 13-80
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Vehicle speed
Inhibitor
Reverse selection
13-76
Reverse Lockout System
System Description
With 5th-6th selected
With reverse selected
Select lever
Change lever
Select lock
cam A
Select lock cam B
Select lock return spring
Direction of reverse selection
Locked position
Inhibitor OFF
At a vehicle speed of 12 mph (20 km/h) or more, a signal from the ECM activates the reverse lockout solenoid, which
pushes the select lock cam B into the locked position. As a result, the select lever cannot rotate to the reverse select
position, making it impossible to engage reverse gear. At a vehicle speed of 9 mph (15 km/h) or less, the signal from
the ECM is interrupted, which turns off the reverse lockout solenoid. The select lock return spring pulls back the select
lock cam B, enabling the select lever to move freely so the reverse gear can be selected.
Above 12 mph (20 km/h)
ON
Not allowed
Below 9 mph (15 km/h)
OFF
OK
IG-S/W OFF
OFF
OK
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2002-2004 models
2005-2006 models
13-77
Circuit Diagram
GRN/WHT
BLK/ORN
No. 20*
1
2
BLK/YEL
BLK/YEL
IG1
BAT
WHT
BATTERY
UNDER-HOOD
FUSE/RELAY
BOX
IGNITION
SWITCH
IG1 HOT in ON (II)
and START (III)
UNDER-DASH
FUSE/RELAY
BOX
REVERSE
LOCKOUT
SOLENOID
ENGINE
CONTROL
MODULE
(ECM)
C101
20P CONNECTOR
No. 19
(100 A)
No. 4
(10 A)
YEL/RED
GRN/WHT
BLK/ORN
No. 20*
1
2
BLK/YEL
BLK/YEL
IG1
BAT
WHT
BATTERY
UNDER-HOOD
FUSE/RELAY
BOX
IGNITION
SWITCH
IG1 HOT in ON (II)
and START (III)
UNDER-DASH
FUSE/RELAY
BOX
REVERSE
LOCKOUT
SOLENOID
ENGINE
CONTROL
MODULE
(ECM)
C101
20P CONNECTOR
C101
20P CONNECTOR
No. 19
(100 A)
No. 4
(10 A)
* No. 20 (40 A): USA
No. 20 (50 A): Canada
* No. 20 (40 A): USA
No. 20 (50 A): Canada
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−
−
−
−
−
−
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
13-78
Reverse Lockout System
Circuit Troubleshooting
REVERSE LOCKOUT SOLENOID
2P CONNECTOR
IG1
(BLK/YEL)
1. Check the No. 4 (10A) fuse in the under-dash fuse/
relay box.
Go to step 2.
Replace the fuse, and recheck.
2. Start the engine, and check the Malfunction
Indicator Lamp (MIL).
Troubleshoot the DTC (see page 11-3), and
recheck.
Go to step 3.
3. Turn the ignition switch OFF.
4. Shift into reverse gear.
Go to step 5.
Repair the transmission, and recheck.
5. Turn the ignition switch ON (II). With the vehicle
moving slowly (vehicle speed below 9 mph
(15 km/h)), shift the transmission into reverse gear.
Go to step 6.
Go to step 7.
6. Raise the front wheels, and block the rear wheels.
Run the vehicle to a speed above 12 mph (20 km/h).
Go to step 7.
Intermittent failure, system is OK at this
time.
7. Turn the ignition switch OFF.
8. Disconnect the reverse lockout solenoid 2P
connector.
9. Turn the ignition switch ON (II).
10. Measure the voltage between the reverse lockout
solenoid 2P connector terminal No. 2 and body
ground.
Go to step 11.
Check for loose or poor connections at C101
(20P) connector. If the connections are OK, repair
open in the wire between No. 4 (10 A) fuse in the
under-dash fuse/relay box and the reverse lockout
solenoid.
11. Turn the ignition switch OFF.
12. Remove the reverse lockout solenoid (see page
13-80).
Wire side of female terminals
Is the f use OK ?
Does the MIL come on?
Can the tr ansmission be shif ted into r ever se gear ?
Can the tr ansmission be shif ted into r ever se gear ?
Can the tr ansmission be shif ted into r ever se gear ?
Is ther e batter y voltage?
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