Suzuki 2006 SX4, Service Manual

Page: 157 / 1478

Engine General Information and Diagnosis: 1A-113
DTC Troubleshooting
DTC P2102: Throttle Actuator Control Motor Circuit Low
S6RW0C1104066
Wiring Diagram
Refer to “DTC P0122 / P0123: Throttle / Pedal Position Sensor / Switch “A” Circuit Low / High”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Keep ignition switch is at ON position for 5 sec. or longer.
4) Check DTC.
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 DTC check
1) Check DTC.
Is any DTC(s) detected?
Go to applicable DTC
diag. flow. Go to Step 3.
3 Throttle actuator circuit check
1) Disconnect connectors from electric throttle body
assembly and ECM with ignition switch turned OFF.
2) Check for proper terminal connection to electric throttle
body assembly and ECM connectors.
3) If connections are OK, check that throttle actuator
control circuit is as follows.
• Wiring harness resistance of each throttle actuator
control circuit (+) and (–) is less than 3
Ω
• Insulation resistance between throttle actuator control
circuit (+) or (–) and vehicle body ground is Infinity
• Insulation resistance of wire harness is infinity
between throttle actuator control circuit (+) and each
other terminal at electric throttle body connector
• Circuit voltage of throttle actuator control circuit (+)
and (–) is 0 – 1 V with ignition switch turned ON.
Are they in good condition?
Go to Step 4. Repair or replace.
4 Electric throttle body assembly check
1) Check electric throttle body for performance referring to
“Electric Throttle Body Assembly On-Vehicle Inspection
in Section 1C”.
Is it in good condition?
Substitute a known-
good ECM and recheck. Repair or replace
electric throttle body
assembly.
DTC detecting condition Trouble area
Power supply voltage of throttle actuator control relay is lower
than 5 V for 0.5 sec. even though throttle actuator control relay
turned on.
(1 driving cycle detection logic) • Throttle actuator control relay and/or its circuit
• ECM