Dtc41 Ecm Not Registered - Suzuki Grand Vitara XL-7 Service Manual

DTC41 ECM NOT REGISTERED

DESCRIPTION:
Immobilizer Control Module checks whether immobilizer system is locked with ignition switch OFF. If the system
is unlocked, DTC 41 is set.
INSPECTION:
STEP
1 Was "Immobilizer Diag. Flow Table"
performed?
2 1) Disconnect ECM coupler.
2) Disconnect coupler at immobilizer
control module.
3) Is there continuity between G09-7 of
immobilizer control module coupler
and C51-66 in coupler of ECM
equipped with single-connector or
E227-28 in coupler of ECM
equipped with triple-connector?
See Fig. 1 and 2.
3 1) Check resistance between G09-7 of
immobilizer control module coupler
and body ground. See Fig.1 and 2.
Is it infinity (∞)?
4 1) Read DTC according to "Diagnostic
Trouble Code Check" section.
Does Suzuki scan tool indicate DTC 41
again?
Fig. 1 for Step 2 and 3
1. ECM coupler
2. Immobilizer control module coupler
ACTION
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-13
YES
Go to Step 2.
Go to Step 3.
D Poor G09-7, C51-66 and
E227-28 terminal connection
If all above are OK, register ECU
code in ECM according to
"Procedure after ECM
Replacement" section. And then
go to Step 4.
Substitute a known-good ECM
and recheck.
Fig. 2 for Step 2 and 3
[A] : For vehicle equipped with
single-connector ECM
[B] : For vehicle equipped with
triple-connector ECM
1. ECM
2. Immobilizer Control Module
NO
Go to "Immobilizer Diag.
Flow Table".
D "GRN" wire open or,
Poor G09-7 terminal
connection
"GRN" wire shorted to
ground
Go to "Immobilizer Diag.
Flow Table".
1. ECM coupler
2. Immobilizer control module connector