Suzuki GRAND VITARA XL-7 Owner's Manual page 254

TROUBLESHOOTING
Step
1 Was "ENGINE DIAG. FLOW TABLE" per-
formed?
2 EGR valve check :
1) With ignition switch OFF, disconnect connec-
tor from EGR valve.
2) Check for proper connection to EGR valve at
each terminal.
3) If OK, check EGR valve for resistance refer-
ring to "EGR VALVE INSPECTION" in Sec-
tion 6E2.
Is check result as specified?
3 Wire harness check :
1) Connect connector to EGR valve.
2) Remove ECM (PCM) cover and disconnect
connector from ECM (PCM).
3) Check for proper connection to ECM (PCM)
at system related terminals.
4) If OK, check for resistance between the fol-
lowing terminals of ECM (PCM) connector
disconnected.
EGR valve resistance :
C51-2-13 and C51-3-4, C51-2-14 and C51-3-4,
C51-2-15 and C51-3-4, C51-2-12 and C51-3-4 :
20 – 24 Ω Ω Ω Ω at 20°C (68°F)
C51-2-13 and ground, C51-2-14 and ground,
C51-2-15 and ground, C51-2-12 and ground :
Infinity (∞ ∞ ∞ ∞ )
Is check result as specified?
ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-93
Action Yes
Go to Step 2.
Go to Step 3.
Intermittent trouble or
faulty ECM (PCM).
Recheck referring to
"INTERMITTENT AND
POOR CONNECTION" in
Section 0A.
No
Go to "ENGINE DIAG.
FLOW TABLE" in this
section.
EGR valve malfunction.
"BLU/BLK", "LT GRN",
"LT GRN/WHT" "LT GRN/
YEL" or "LT GRN/RED"
circuit open or shorted to
ground.