[D-1] Maintenance Of The Ecu (Abs); [D-2] Maintenance Of The Abs Fail-Safe Relay - Yamaha 2007 XP500 Service Manual

EAS27770

[D-1] MAINTENANCE OF THE ECU (ABS)

Checking the ECU (ABS)
1. Check:
Terminals "1" of the ECU (ABS)
G
Cracks/damages → Replace ECU (ABS)
Terminals "2" of the ECU (ABS) coupler
G
Connection defective,
come-off → Correct or clean.
NOTE:
If the ECU (ABS) couplers are clogged with mud
or dirt, clean with compressed air.
EAS15B4014
[D-2] MAINTENANCE OF THE ABS
FAIL-SAFE RELAY
CHECKING THE FAIL-SAFE RELAY
1. Check:
Solenoid relay for continuity
G
Connect the pocket tester (Ω×1) to the termi-
nals.
Check for continuity between terminals "3"
and "4" of the solenoid relay.
Positive tester probe Terminal →"3"
Negative tester probe Terminal →"4"
Tester reading is "∞". → Replace the fail-safe
relay.
Check for continuity between terminals "7"
G
and "8" of the solenoid relay.
Positive tester probe Terminal →"7"
Negative tester probe Terminal →"8"
ABS (ANTI-LOCK BRAKE SYSTEM) (XP500A)
contaminated,
8-72
Solenoid relay resistance
150–450 Ω
Tester reading is "∞". → Replace the fail-safe
relay.
Connect the positive battery terminal to termi-
G
nal "7" and the negative battery terminal to
terminal "8", and then check for continuity be-
tween terminals "4" and "5" of the solenoid re-
lay.
Positive tester probe → Terminal "4"
Negative tester probe → Terminal "5"
Tester reading is "∞". → Replace the fail-safe
relay.
a. Fail-safe relay
b. ABS motor relay
c. Solenoid relay
2. Check:
ABS motor relay for continuity
G
Connect the pocket tester (.Ω×1) to the termi-
nals of the ABS motor relay.
Check for continuity between terminals "1"
and "6" of the ABS motor relay.
Positive tester probe Terminal
Negative tester probe Terminal
Tester reading is "∞". →Replace the fail-safe
relay.
ABS motor relay resistance
50–150 Ω