Suzuki GRAND VITARA XL-7, Руководство по обслуживанию

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6-30 ENGINE DIAGNOSIS (RHZ ENGINE WITH SINGLE-CONNECTOR ECM)
TABLE A-3
INSPECTION
STEP ACTION YES NO
1 Double Relay Operating Sound Check:
Is operating sound of double relay heard at ignition
switch ON? Go to Step 5. Go to Step 2.
2 Fuse Check:
Is main “FI” fuse in good condition? Go to Step 3. Check for short in
circuits connected to
this fuse.
3 Double Relay Check:
1) Turn OFF ignition switch and remove double
relay.
2) Check for proper connection to double relay at
terminal 3 and 10.
3) If OK, check double relay referring to “Double
Relay Inspection” in Section 6E3.
Is check result satisfactory?
Go to Step 4. Replace main relay.
4 ECM (PCM) Power Circuit Check:
1) Turn OFF ignition switch, disconnect connectors
from ECM (PCM) and install main relay.
2) Check for proper connection to ECM (PCM) at
terminals C51-69, C51-86, C51-29 and C51-1.
3) If OK, then measure voltage between terminal
C51-69 and ground, C51-86 and ground with
ignition switch ON.
Is each voltage 10 – 14 V?
Go to Step 5. “BLK / WHT”,
“YEL / GRN” or
“WHT / YEL” circuit
open.
5 ECM Power Circuit Check:
1) Using service wire, ground terminal C51-86 and
measure voltage between terminal C51-29 and
ground, C51-1 and ground at ignition switch ON.
Is it 10 – 14 V?
Check ground circuits
“BLK” for open.
If OK, then substitute a
known-good ECM
(PCM) and recheck. Go to Step 6.
6 Is operating sound of double relay heard in Step 1? Go to Step 7. “WHT / YEL” or
“BLU / BLK” wire open
7 Double Relay Check:
1) Check double relay according to procedure in
Step 3.
Is main relay in good condition?
“WHT / YEL” or
“BLU / BLK” wire open. Replace double relay.