Suzuki Wagon R Manual page 430

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) Disconnect P/S control module connector
(if equipped).
4) Turn ignition switch to ON position, without
running engine.
5) Measure voltage from terminal "c" of VSS
connector to ground.
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.
Is voltage within 10 – 14 V?
6 1) Measure voltage from terminal "c" of VSS
connector to ground.
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
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.
Faulty P/S control
module.
Go to Step 6.
Go to Step 7.
Faulty VSS signal rotor.
ENGINE DIAGNOSIS 6-91
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 5.
Go to Step 4.
"V" wire open or short.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
"B/W" or "Br" wire open
or short.
"V" 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.