Suzuki SX4 Service Manual page 669

DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 Check brake light switch circuit
1) Check brake light, brake light (brake pedal) switch and
their circuit referring to "Brake Light Symptom Diagnosis
in Section 9B".
Are they in good condition?
3 Check brake light switch circuit
1) Disconnect connectors from ECM and ESP® control
module.
2) Remove shift lock relay. (A/T model)
3) Remove all of brake light bulb.
4) Check for proper connection to "E01-20" wire of ECM
connector.
5) If connections are OK, check brake light switch circuit for
the following.
• Resistance of "GRN/WHT" wire terminal of brake light
switch between brake light switch connector and ECM
connector is less than 1 Ω (continuity check)
• Resistance between "GRN/WHT" wire terminal of
brake light switch connector and vehicle body ground
is infinity (ground short check)
• Voltage of between "GRN/WHT" wire terminal of
brake light switch connector and vehicle body ground
is 0 V with ignition switch tuned ON (power short
check)
Are they in good condition?
Action
Electronic Stability Program:
Yes
Go to Step 2.
Go to Step 3.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
If DTC C1016 is still
detected, substitute a
known-good ECM and/
or check shift lock relay
(A/T model).
4F-31
No
Go to "Electronic
Stability Program
Check".
Repair or replace.
Repair or replace
defective wire.