Honda NSS250A Reflex 2001-2007, Manual

Page: 668 / 718

Honda S Matic System (NSS250A)
24-24
DTC 29-1 (Movable drive face position
sensor low voltage)
• Movable drive face position sensor malfunction
can be detected after starting the engine.
• Before starting troubleshooting, check for loose
or poor contacts on the following connectors,
then recheck.
– Movable drive face position sensor 2P (Black)
connector
– Ratio control motor 2P (Black) connector
– PCM 21P (Black) connector
• When removing the movable drive face position
sensor, perform the Honda S Matic System initial
setting procedure (page 24-61).
1. Movable Drive Face Position Sensor System
Inspection
Turn the ignition switch ON and engine stop
switch " ".
Check the movable drive face position sensor
shaft with HDS pocket tester.
Is about 0 V (low voltage) indicated?
YES – GO TO STEP 2.
NO – • Intermittent failure
• Loose or poor contact of the connec-
tor
2. Movable Drive Face Position Sensor Installation
Inspection
Turn the ignition switch OFF.
Remove the movable drive face position sensor
(page 24-51).
Check if the slot of the movable drive face posi-
tion sensor and sensor shaft are aligned.
Is the position sensor installed correctly?
YES – GO TO STEP 3.
NO – Install the movable drive face position
sensor correctly, then GO TO STEP 7.
3. Movable Drive Face Position Sensor Resistance
Inspection 1
Measure the resistance at the movable drive face
position sensor 3P connector of the sensor side.
Is the resistance within 0 – 6.0 k
Ω
(20
°
C/68
°
F)?
YES – GO TO STEP 4.
NO – Faulty movable drive face position sen-
sor
Align
CONNECTION: A – B
B – C
A – C
STANDARD: 0 – 6.0 k
Ω
(20
°
C/68
°
F)
3P CONNECTOR
(Sensor side/male terminals)
A
A
B
C
C
B
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