Suzuki Wagon R Manual page 1173

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) Turn ignition switch to OFF position.
2) Disconnect combination meter connectors.
Refer to Section 8C.
3) Turn ignition switch to ON position, without
running engine.
4) Measure voltage from terminal "c" of VSS
connector to ground. See Fig. 2.
Is voltage within 4 – 5 V?
5 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. See Fig. 1.
Is voltage within 10 – 14 V?
6 1) Measure voltage from terminal "c" of VSS
connector to ground. See Fig. 2.
Is voltage more than 4 V?
7 1) Remove VSS.
2) Visually inspect VSS sensor signal rotor for
damage.
Was any damage found?
Fig. 1 for Step 5
ACTION
Fig. 2 for Step 4 and Step 6
GENERAL INFORMATION AND ENGINE DIAGNOSIS 6-1-81
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.
Faulty speedometer.
Go to Step 6.
Go to Step 7.
Faulty VSS signal rotor.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 5.
Go to Step 4.
"PPL" wire open or
short.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
"BLK/WHT" or "BRN"
wire open or short.
"PPL" 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.