Suzuki Engine 2002 GRAND VITARA SQ625, Руководство по обслуживанию

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6-108 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES)
TROUBLESHOOTING (DTC P0500/DTC No.24)
Step Action Yes No
1 Was “Engine Diag. Flow Table” performed? Go to Step 2. Go to “Engine Diag. Flow
Table”.
2 Does speedometer indicate vehicle speed? Faulty “BLU/YEL” wire or
poor C51-2-25 connec-
tion.
If wire and connection are
OK, intermittent trouble or
faulty ECM (PCM).
Check for intermittent
referring to “Intermittent
and Poor Connection” in
Section 0A. Go to Step 3.
3 VSS Power Supply Voltage Check :
1) With ignition switch OFF, remove VSS cou-
pler.
2) With ignition switch ON leaving engine OFF,
check voltage between “BLU/BLK” wire ter-
minal and “BLK/YEL” wire terminal of VSS
coupler.
Is voltage 10 – 14 V?
Go to Step 4. “BLU/BLK” or “BLK/YEL”
wire open/short.
4 VSS Signal Harness Check :
1) With ignition switch ON leaving engine OFF,
check voltage between “BLU/YEL” and
“BLK/YEL” wire terminal of VSS coupler.
Is voltage 4 V or more?
Go to Step 5. Go to Step 6.
5 VSS Visual Inspection :
1) Remove VSS referring to “Speedometer
Driven Gear” in Section 7D.
2) Check VSS drive and driven gears for dam-
age and excessive wear.
Are they in good condition?
Poor VSS connection or
VSS malfunction.
If connection is OK, sub-
stitute a known-good VSS
and recheck. Replace VSS.
6 Speedometer Circuit Check :
1) With ignition switch OFF, disconnect G11
coupler from combination meter.
2) With ignition switch ON leaving engine OFF,
check voltage between “BLU/YEL” wire ter-
minal and “BLK/YEL” wire terminal of VSS
coupler.
Is voltage 4 V or more?
Substitute a knowngood
combination meter and
recheck. “BLU/YEL” wire open/
short or faulty ECM
(PCM).
If wire and connection are
OK, substitute a known-
good ECM (PCM) and
recheck.