Dtc Troubleshooting; Dtc P1603: Tcm Trouble Code Detected (For J20 Engine) - Suzuki GRAND VITARA JB416 Service Manual

DTC Troubleshooting

NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions For DTC Troubleshooting: in related manual".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Vehicle speed signal check
Is vehicle speed displayed on scan tool in Step 4) and 5) of
"DTC Confirmation Procedure"?
3 DTC check in ABS / ESP® control module
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ABS / ESP® control module for DTC.
Is there any DTDC(s) in ABS / ESP

DTC P1603: TCM Trouble Code Detected (For J20 Engine)

Wiring Diagram
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
60 59 58 57 56
1. ECM
Action
®
control module?
2
E92-17
RED
E92-7 WHT
E23
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
2. TCM (for A/T model)
Engine General Information and Diagnosis:
Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection: in Section
00 in related manual".
Go to applicable DTC
diag. flow.
WHT/RED
E23-19
WHT/BLU
WHT/BLU
WHT/RED E03-10
RED E03-12
WHT
2 1 15 14 13 12 11
17 16 30 29 28 27 26
44
32 31 45 43 42 41
47 46 60 59 58 57 56
Yes
Go to "Engine and
Emission Control
System Check: in
related manual".
Go to Step 3.
Substitute a known-
good ECM and recheck.
1
E23-4
3
E03-8
E03-6
C37
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
3. ABS / ESP® control module
1A-29
No
S5JB0E1104063
2 1
17 16
32 31
47 46
I5JB0A110067-02