Suzuki WagonR+ RB310 Service Manual page 2347

5E1-26 ANTILOCK BRAKE SYSTEM (ABS)
DTC 63 – ABS FAIL-SAFE RELAY CIRCUIT
DESCRIPTION
ABS control module monitors the voltage at the terminal of solenoid circuit constantly with ignition switch turned
ON. Also, immediately after ignition switch is turned "ON", perform initial check as follows.
Switch fail-safe relay in the order of OFF ! ON and check if voltage changes to Low ! High. If anything faulty is
found in the initial check and when the voltage is low with ignition switch turned ON, this DTC will be set.
INSPECTION
STEP
1 Check battery voltage. Is it about 11 V or higher?
2 Check ABS main fuse and connection.
Is it in good condition?
3 1) Ignition switch OFF.
2) Disconnect ABS hydraulic unit/control module
connector.
3) Check proper connection to ABS hydraulic unit/
control module at terminal "E20-25".
4) If OK, then measure voltage between connector
terminal "E20-25" and body ground.
Is it 10 – 14 V?
ACTION
1. Ignition switch
2. ABS hydraulic unit / control module assembly
3. ABS hydraulic unit / control module connector
4. To solenoid valves
5. To pump motor relay
6. Fail-safe relay
YES
Go to Step 2. Check charging
system referring to
"CHARGING
SYSTEM" section.
Go to Step 3. Repair and/or
replace fuse.
Substitute a known- "W/B" circuit open
good ABS hydraulic or short to ground.
unit/control module
assembly and
recheck.
NO