Suzuki Liana RH413 Service Manual page 617

DTC Troubleshooting
Step
1 Was "A/T System Check" performed?
2 Is there DTC related to throttle position sensor?
3 Check engine coolant temperature signal circuit for IG
short
1) Turn ignition switch OFF.
2) Disconnect TCM and ECM connectors from TCM and
ECM.
3) Check proper connection to TCM at terminal "G07-7"
and to ECM at terminal "G04-8".
4) If OK, turn ignition switch ON and measure voltage
between terminal "G07-7" of disconnected harness side
TCM connector and ground.
Is it 10 – 14 V?
4 Check engine coolant temperature signal circuit for
open
1) Turn ignition switch OFF.
2) Check continuity between terminal "G07-7" of
disconnected harness side TCM connector and terminal
"G04-8" of disconnected harness side ECM connector.
Is continuity indicated?
5 Check engine coolant temperature signal circuit for
ground short
1) Check continuity between terminal "G07-7" of
disconnected harness side TCM connector and ground.
Is continuity indicated?
6 Inspect engine coolant temperature sensor
1) Inspect engine coolant temperature sensor referring to
"Engine Coolant Temperature (ECT) Sensor Inspection
in Section 1C".
Is inspection result OK?
Action
Automatic Transmission/Transaxle:
Yes
Go to Step 2.
Go to corresponding
DTC flow.
"GRY/BLK" circuit
shorted to power circuit.
Go to Step 5.
"GRY/BLK" circuit
shorted to ground.
Intermittent trouble or
faulty TCM or ECM.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
If OK, substitute a
known-good TCM or
ECM and recheck.
5A-69
No
Go to "A/T System
Check".
Go to Step 3.
Go to Step 4.
"GRY/BLK" circuit open.
Go to Step 6.
Replace engine coolant
temperature sensor.