Yamaha YP250A 1999 Supplementary Service Manual page 63

5) Wire harness
S Check the continuity between the red/blue terminal of fail-safe relay's coupler and positive (+) terminal of
battery.
S Remove the ECU fuse and check the continuity between the brown/white lead of fail-safe relay's con-
nector and ABS fuse (see the illustration below).
[C-5-7] Malfunction code "32" (Detected the operation failure of fail-safe relay)
1) Fail-safe relay
S Check if the fail-safe relay operates correctly.
2) ABS harness
S With the fail-safe relay and ECU removed from the ABS wire harness, check the insulation between the
red/blue and red terminals of the coupler for fail-safe relay.
[C-5-8] Malfunction code "33" (Detected the failure of motor operation (Motor stops and will not
rotate))
1) ABS pump fuse
S Check if the fuse for ABS motor beside the batter is blown.
2) Fail-safe relay
S Check if the fail-safe relay operates correctly.
3) Wire harness and the ABS harness
S Remove the fail-safe relay and check the continuity between the red terminal of ABS harness and ABS
harness side (A terminal as shown in the figure) of ABS fuse terminal in the fuse box. (Remove the fuse
first.) (Refer to ABS CIRCUIT DIAGRAM.)
S Check the continuity between the battery positive (+) terminal and battery side of ABS pump fuse termi-
nal (B terminal as shown in the above figure).
S Remove the ECU and fail-safe relay from the ABS harness and check the continuity between
white/black lead terminals and between red / white lead terminals.
ANTI-LOCK BRAKE SYSTEM (ABS)
Check the continuity at this point
Terminal B
Terminal A
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CHAS
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