Suzuki SY413 Service Manual page 2689

6-1-90 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC)
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 Check Signal Circuit.
1) Remove combination meter.
2) Check for proper connection to speedometer at ter-
minal G19-6.
3) If OK, then check voltage at terminal G19-6 with
ignition switch ON. See Fig. 1.
Is voltage 4 – 6 V?
5 Check VSS (Speedometer driven gear).
1) Remove VSS.
2) Check resistance between two terminals. See Fig. 2.
Resistance between
two terminals
3) Check gear for damage and rotation.
Magnetic force should be felt when rotating gear.
Is check result in step 2) and 3) satisfactory?
Fig.1 for Step 4
ACTION
:300 – 450W at 205C, 685F.
YES
Go to Step 2.
Go to Step 3.
Intermittent trouble or
faulty ECM.
Check for intermittent
referring to "Intermit-
tent and Poor Connec-
tion" in section 0A.
Replace speedometer.
"V / Y" circuit open or
shorted to ground,
"B / Or" or "B" circuit
open or poor connec-
tion.
If wires and connec-
tions are OK, replace
speedometer.
Fig.2 for Step 5
NO
Go to ENGINE
DIAG. FLOW
TABLE.
Go to Step 5.
Go to Step 4.
"V" circuit open or
shorted to ground.
If wire and connec-
tion are OK, substi-
tute a known-good
ECM and recheck.
Replace VSS
(Speedometer driv-
en gear).