Dtc P1601 Can Communication Error - Suzuki Wagon R Plus RB310 Service Manual

6-2-146 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)

DTC P1601 Can Communication Error

Wiring Diagram
E23
7 6 5 4
17 16 15 14 13 12
27 26 25 24 23 22
34 33 32
1. ECM
2. TCM
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Transmission or reception error of communication data
is detected by ECM for specified time continuously.
(1 driving cycle detection logic)
DTC Confirmation Procedure
• Connect scan tool to DLC with ignition switch turned OFF.
• Turn ON ignition switch and clear DTC by using scan tool, then start engine and run it for 1 min. or more.
• Check DTC and pending DTC.
Troubleshooting
Step
1 Was "Engine and Emission Control System"
performed?
2 DTC check
1) Check DTC of ECM and TCM.
Is there any DTC(s) (other than DTC P1601
and DTC P1701)?
2
E13-17
E13-7
E22
3 2 1 7 6 5 4 3
11 10 9 8 19 18 17 16 15 14 13 12
21 20 19 18 27 26 25 24
31 30 29 28 35 34 33 32
Action
1
RED E21-8
WHT
E21-7
E21
2 1 6 5 4 3
11 10 9 8 16 15 14 13 12 11 10 9
23 22 21 20 27 26 25 24 23 22 21 20
31 30 29 28 35 34 33 32 31
• "RED" or "WHT" wire circuit open or short
• TCM malfunction
• ECM malfunction
Yes
Go to Step 2.
Go to applicable DTC
diag. flow table.
2 1
8 7
19 18 17
30 29 28
Trouble Area
Go to "Engine and Emis-
sion Control System" in
this section.
Go to Step 3.
No