Injection Warning Light Does Not Come On With Ignition Switch On And Engine Stop - Suzuki GRAND VITARA 2005 Service Manual

Injection Warning Light Does Not Come ON with Ignition Switch ON and Engine Stop

Wiring Diagram
Refer to "Immobilizer Control System Wiring Circuit Diagram: ".
Circuit Description
When the ignition switch is turned ON, ECM transmits the indication ON signal to the combination meter to turn ON the
injection warning light in case that there is not any problem with the immobilizer control system. Then, the combination
meter turns ON the lamp. When the engine is started up, ECM transmits the indication OFF signal to the combination
meter to turn OFF the lamp. Then, the combination meter turns OFF the injection warning light. However, in case that
there is some trouble with the immobilizer control system, the injection warning light flashes ON and OFF when the
ignition switch is turned ON.
Troubleshooting
Step
1 Injection warning light power supply check
1) Turn the ignition switch to ON position.
Do other warning lights come ON?
2 Diagnostic Trouble Code (DTC) check
1) Check ECM for DTC referring to "DTC Check: in
Section 1A".
2) Check ABS control module or ESP
DTC. For vehicle equipped with ESP
"DTC Check: in Section 4F". For vehicle not equipped
®
with ESP system, refer to "DTC Check: in Section 4E".
3) Check BCM for DTC referring to "DTC Check: in
Section 10B in related manual".
Is any DTC(s) detected?
3 Fuse check
1) Turn the ignition switch to OFF position.
2) Check if any related fuse is blown.
Is any fuse blown?
4 Combination meter power supply wire circuit check
1) Remove combination meter referring to "Combination
Meter Removal and Installation: in Section 9C in related
manual".
2) Check for proper connection at "G28-13" and "G28-15"
wire terminals of combination meter connector.
3) If OK, turn the ignition switch to ON position and
measure voltage between "G28-13" wire terminal of
combination meter and vehicle body ground.
Is it 10 – 14 V?
5 Combination meter ground wire circuit check
1) Turn ignition switch OFF position.
2) Measure resistance between "G28-15" terminal of
combination meter connector and vehicle body ground.
Ω
Is resistance 1 or less?
Action
®
control module for
®
system, refer to
Immobilizer Control System:
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
Replace blown fuse,
and then check for
short.
Go to Step 5.
Replace combination
meter with a know-good
one and recheck. If the
injection warning light
still remains OFF,
replace ECM with a
known-good one and
recheck.
10C-8
S5JB0BA304006
No
Go to Step 3.
Replace combination
meter with a known-
good one and recheck.
If the injection warning
light still remains OFF,
replace ECM with a
known-good one and
recheck.
Go to Step 4.
Repair open in power
supply wire circuit.
Repair open or high
resistance in ground
wire circuit.