Flow Table - Suzuki GRAND VITARA XL-7 Owner's Manual

7E-4 DIFFERENTIAL (FRONT)

Flow table

Step
1 Turn ON ignition switch (but engine at stop) and
check malfunction indicator lamp.
Does lamp light up?
2 Check 4WD switch circuit.
Turn ignition switch ON and check that voltage
between terminal C51-3-7 and terminal C51-3-17
(ground) is as follows.
• When transfer shift lever is in N or 2H : 10 – 14 V
• When transfer shift lever is in 4L or 4H : 0 – 1 V
Is the check result satisfactory?
3 Check power supply.
1) Turn ignition switch ON.
2) Check voltage between C51-1-9 and C51-3-17
(ground). The check results should be as follows.
• When transfer shift lever is in N or 2H : 0 – 1 V
• When transfer shift lever is in 4L or 4H : 10 – 14 V
Is the check result satisfactory?
4 Check air pump assembly circuit.
1) Check for proper connection to air pump assem-
bly at all terminals.
2) Turn ignition switch ON.
3) Check voltage between C51-3-18 and C51-3-17
(ground). The check result should be as follows.
• When transfer shift lever is in 2H or N : 0 – 1 V
• When transfer shift lever is in 4L or 4H (more than
4 seconds after shifted to 4L or 4H) : 10 – 14 V
Is the check result satisfactory?
5 Check 4WD indicator lamp circuit.
1) Turn ignition switch ON.
2) Check voltage between E61-19 and C51-3-17
(ground). The check result should be as follows.
• When transfer shift lever is in 2H or N : 10 – 14 V
• When transfer shift lever is in 4L or 4H : 0 – 1 V
Is the check result satisfactory?
Action Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
4WD control system is
in good condition.
No
A trouble has occurred
at some place. Repair
it referring to
MALFUNCTION INDI-
CATOR LAMP
("CHECK ENGINE"
LAMP) CHECK in
DIAGNOSIS of Sec-
tion 6.
Check 4WD switch
(refer to Section 7A),
"BLK/ORN" and "BLK"
circuits of 4WD switch.
If OK, substitute a
known-good ECM
(PCM) and recheck.
Check "RED" circuit. If
it is OK, substitute a
known-good ECM
(PCM) and recheck.
Check air pump
assembly referring to
"ON-VEHICLE SER-
VICE", and then
"PNK" circuit.
If OK, substitute a
known-good ECM
(PCM) and recheck.
Check "ORN/BLK" cir-
cuit (including indica-
tor lamp and
combination meter).
If OK, substitute a
known-good ECM
(PCM) and recheck.