Suzuki SX4 Service Manual page 220

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1A-170 Engine General Information and Diagnosis:
Step
5
CAN communication check of BCM, ECM, ABS / ESP®
control module and combination meter
1) Turn ignition switch to OFF position.
2) Connect BCM, ECM, ABS / ESP® control module and
combination meter connectors.
3) Perform "Communication Bus Check" under "Bus
Check" using SUZUKI-SDT with ignition switch turned
ON.
Are all of BCM, ECM, ABS / ESP
combination meter normally displayed?
6
Terminating resistance check in ECM and combination
meter
1) Turn ignition switch to OFF position and then disconnect
negative (–) cable at battery.
2) Measure resistance between CAN High terminal (2) and
CAN Low terminal (3) on DLC (1).
1
If resistance 57 – 67
7
Substitute ECM and recheck
1) Substitute a known-good ECM and recheck.
Is it in good condition?
8
Terminating resistance check in ECM
1) Make sure that ignition switch is OFF position and
battery negative (–) cable is disconnected.
2) Disconnect combination meter connector.
3) Measure resistance between CAN high terminal and
CAN low terminal on DLC as the same manner as Step
6.
Is resistance 114 – 134
9
Internal circuit check in BCM
1) Make sure that ignition switch is OFF position and
battery negative (–) cable is disconnected.
2) Disconnect ABS / ESP® control module connector.
3) Measure resistance between the followings
• Between CAN high terminal on DLC and "E08-2"
terminal on ABS / ESP® control module connector
• Between CAN low terminal on DLC and "E08-13"
terminal on ABS / ESP® control module connector
Is each resistance 0 – 1
Action
®
control module and
3
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
?
?
?
Yes
Go to Step 12.
Go to Step 7.
I7RW01110098-01
End.
Substitute a known-
good combination
meter.
Go to Step 10.
No
Go to Step 6.
Go to Step 8.
Substitute a known-
good combination meter
and recheck. If NG, go
to Step 11.
Go to Step 9.
Substitute a known-
good BCM.

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