Suzuki GA413 Service Manual page 861

DTC P0500
INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Does speedometer indicate vehicle speed?
3 Check Vehicle Speed Signal.
Is vehicle speed displayed on scan tool in step 2)
and 3) of DTC confirmation procedure?
4 1) With ignition switch at OFF position, disconnect
VSS connector.
2) Turn ignition switch to ON position, without
running engine.
3) Measure voltage from terminal "a" to "b" of VSS
connector.
Is voltage within 10 – 14 V?
5 1) Measure voltage from terminal "c" of VSS
connector to ground.
Is voltage more than 4 V?
6 1) Measure voltage from terminal "a" of VSS
connector to ground.
Is voltage 4 – 6 V?
7 1) Remove VSS.
2) Visually inspect VSS sensor signal rotor for
damage.
Was any damage found?
Fig. 1 for Step 4
ACTION
Fig. 2 for Step 5
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-85
YES
Go to Step 2.
Go to Step 3.
Intermittent trouble or
faulty ECM.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0A.
Go to Step 5.
Go to Step 7.
Substitute a known-
good speedometer and
recheck.
Faulty VSS signal rotor.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 4.
"YEL" wire open or
short.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
"BLK/RED" or
"BLK/YEL" wire open or
short.
Go to Step 6.
"YEL" wire open or
short.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
Poor connection of VSS
connector terminal.
If OK, substitute a
known-good VSS and
recheck.