Suzuki Grand Vitara Manual page 74

5A-70 Automatic Transmission/Transaxle:
DTC Troubleshooting
Step
1 Vehicle speed signal check
1) Check DTC in ECM and ABS hydraulic unit / control
module referring to "DTC Check: in Section 1A" or "DTC
Check: in Section 4E".
Is there DTC P P0500: Vehicle speed sensor (VSS)
malfunction in ECM and/or DTC C1021, C1022, C1025,
C1026, C1031, C1032, C1035 and/or C1036 in ABS
hydraulic unit / control module?
2 Was "A/T System Check" performed?
3 Do you have SUZUKI scan tool?
4 4L switch and its circuit check
1) Connect SUZUKI scan tool to DLC with ignition switch
OFF.
2) Turn ignition switch ON.
3) Select "DATA LIST" mode on scan tool.
4) Check 4L/N switch signal (ON or OFF) on display when
turning transfer position switch to each position.
4L/N switch specifications
"4H" position: OFF
"4L" position: ON
Is OFF / ON displayed as described above?
5 4L/N switch and its circuit check
1) Turn ignition switch ON.
2) Check terminal voltage "E93-4" of TCM connector
connected when turning transfer position switch to each
position.
4L/N switch specifications
"4H" position: 10 – 14 V
"4L" position: 0 – 1 V
Is voltage as specified?
6 4L/N switch check
1) Check 4L/N switch for operation referring to "Transfer
Assembly Inspection: Motor-Shift Type (Transfer with
Shift Actuator) in Section 3C".
Is check result satisfactory?
www.CarGarage.ir
Action
www.CarGarage.ir
Yes
Go to applicable DTC
diag. flow.
Go to Step 3.
Go to Step 4.
Intermittent trouble or
faulty TCM. Check for
intermittent trouble
referring to "Intermittent
and Poor Connection
Inspection: in Section
00". If OK, substitute a
known-good TCM and
recheck.
Intermittent trouble or
faulty TCM. Check for
intermittent trouble
referring to "Intermittent
and Poor Connection
Inspection: in Section
00". If OK, substitute a
known-good TCM and
recheck.
4L/N switch circuit open.
If wire and connections
are OK, substitute a
known-good TCM and
recheck.
No
Go to Step 2.
Go to "A/T System
Check: ".
Go to Step 5.
Go to Step 6.
Go to Step 6.
Replace 4L/N switch.