Suzuki Wagon R Manual page 1540

DTC C1063 – ABS Fail-Safe Relay Circuit
1. Ignition switch
2. ABS hydraulic unit/control module assembly
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) Turn ignition switch to OFF position.
2) Disconnect ABS hydraulic unit/control mod-
ule connector.
3) Check proper connection to ABS hydraulic
unit/control module at terminal "E20-25".
4) If OK, then measure voltage between con-
nector terminal "E20-25" and body ground.
Is it 10 – 14 V?
3. ABS hydraulic unit/control module connector
4. To solenoid valves
Action
ANTILOCK BRAKE SYSTEM (ABS) 5E-29
5. To pump motor relay
6. Fail-safe relay
Yes
Go to Step 2.
Go to Step 3.
Substitute a known-good
ABS hydraulic unit/con-
trol module assembly and
recheck.
No
Check charging system
referring to "CHARGING
SYSTEM" section.
Repair and/or replace
fuse.
"W/B" circuit open or short
to ground.