Suzuki Liana RH413, Service Manual

Page: 147 / 1302

Engine General Information and Diagnosis: 1A-96
8 Check VSS
1) Turn OFF ignition switch.
2) Remove VSS.
3) Remove metal particles on end face of VSS, if any.
4) Connect connector to VSS.
5) Turn ON ignition switch.
6) Check for voltage at terminal “G04-24” of connector
connected to VSS by passing magnetic substance (iron)
(1) while keeping approximately 1 mm (0.03 in.) gap with
respect to end face of VSS.
Does voltage vary from low (0 – 1 V) to high (4 – 5 V) or from
high to low?
Go to Step 9. Poor connection of VSS
connector terminal. If
OK, substitute a known-
good VSS and recheck.
9 Check VSS signal rotor
1) Turn OFF ignition switch.
2) Visually inspect VSS signal rotor for damage.
Was any damage found?
Faulty VSS signal rotor. Substitute a known-
good ECM and recheck.
10 Does speedometer indicate vehicle speed? Go to Step 11. Go to Step 12.
11 Check vehicle speed signal
1) Turn ignition switch to OFF position.
2) Disconnect combination meter connectors.
3) Turn ignition switch to ON position, without running
engine.
4) Measure voltage from terminal “PPL” wire of TCM
connector to ground.
Is voltage within 4 – 5 V?
Intermittent trouble or
faulty ECM check for
intermittent referring to
“Intermittent and Poor
Connection Inspection
in Section 00”. “PPL” wire open. Poor
connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
12 Check vehicle speed signal circuit
1) Turn ignition switch OFF position.
2) Disconnect connector from TCM.
3) Turn ignition switch to ON position, without running
engine.
4) Measure voltage from terminal “PPL” wire of TCM
connector to ground.
Is voltage more than 4 V?
Go to Step 13. Go to Step 15.
Step Action Yes No
1
I3RH0A110025-01