Suzuki GRAND VITARA JB416 Service Manual page 58

1A-40 Engine General Information and Diagnosis:
Step
8 ABS or ESP® control module check
1) Measure resistance at following connector terminals.
• Between "WHT/BLU" terminal and "WHT" terminal of
ABS or ESP® control module connector.
• Between "WHT/RED" terminal and "RED" terminal of
ABS or ESP® control module connector.
Is measured resistance below 1
9 DTC check
1) Connect connectors to BCM and ECM with ignition
switch turned OFF.
2) Disconnect connectors from TCM (for A/T model) with
ignition switch turned OFF.
3) Check ECM for DTC.
Is there DTC P1678?
10 DTC check
1) Disconnect connector from keyless start control module
(if equipped) with ignition switch turned OFF.
2) Check ECM for DTC.
Is there DTC P1678?
11 DTC check
1) Disconnect connector from combination meter with
ignition switch turned OFF.
2) Check ECM for DTC.
Is there DTC P1678?
Action
Ω
?
Yes
CAN communication
circuit wire between
BCM and ECM
connector is open or
high resistance.
Go to Step 10.
Go to Step 11.
Go to Step 12.
No
Substitute a known-
good ABS or ESP®
control module and
recheck.
CAN communication
circuit wire between
TCM and CAN circuit
junction connector is
open or high resistance.
If wires are OK, check
TCM power and ground
circuits. If circuits are
OK, substitute a known-
good TCM (for A/T
model) and recheck.
CAN communication
circuit wire between
keyless start control
module and CAN circuit
junction connector is
open or high resistance.
If wires are OK, check
keyless start control
module power and
ground circuits. If
circuits are OK,
substitute a known-
good keyless start
control module and
recheck.
CAN communication
circuit wire between
combination meter and
CAN circuit junction
connector is open or
high resistance. If wires
are OK, check
combination meter
power and ground
circuits. If circuits are
OK, substitute a known-
good combination meter
and recheck.