2005 SUZUKI JIMNY Switch

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E175 Overdrive cut signal (A/T)0 – 1.0 VIgnition switch ON and ECT less than
60° C
10 – 14 VIgnition switch ON and ECT more than
60 °C
6 D-range idle up signal (A/T)10 – 14 VIgnition switch ON and shift select switch
in other than P and N range
0 – 1.6 VIgnition switch ON and shift select switch
in P and N range
7 Data link connector 4 – 5 V Ignition switch ON
8–– –
9 Malfunction indicator lamp10 – 14 V Engine running
0 – 1.0 V Ignition switch ON leaving engine OFF
10–– –
11 Data link connector 10 – 14 V Ignition switch ON
12 ABS signal (if equipped) 10 – 14 V Ignition switch ON
13 Heater blower switch0 – 2.0 VIgnition switch ON and heater blower
switch ON
10 – 14 VIgnition switch ON and heater blower
switch OFF
14 Sensor ground––
15Throttle opening signal for
TCM (A/T)Indication
deflection
repeated 0 V
and 10 - 14 VIgnition switch ON
16 Tachometer––
17–– – TERMINAL
NO.CIRCUIT NORMAL
VOLTAGECONDITION

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Resistance Check
1) Disconnect ECM couplers (1) from ECM with ignition switch
OFF.
2) Check resistance between each terminal of couplers discon-
nected. CAUTION:
Never touch terminals of ECM itself or connect voltmeter
or ohmmeter (2).
CAUTION:
Be sure to connect ohmmeter probe from wire harness
side of coupler.
Be sure to turn OFF ignition switch for this check.
Resistance in table below represents that when parts
temperature is 20 °C (68 °F).
1. ECM coupler disconnected
2. Ohmmeter
TERMINALS CIRCUIT STANDARD RESISTANCE
E19-7 to E17-9
(For TYPE A) (See NOTE)HO2S-1 heater 5 – 6.4 Ω
E19-7 to E18-11
(For TYPE B) (See NOTE)
E18-4 to E17-9
(For TYPE A) (See NOTE)HO2S-2 heater 11.7 – 14.3 Ω
E19-9 to E19-2 No.1 injector 12.0 – 13.0 Ω
E19-21 to E19-2 No.2 injector 12.0 – 13.0 Ω
E19-31 to E19-2 No.3 injector 12.0 – 13.0 Ω
E19-8 to E19-2 No.4 injector 12.0 – 13.0 Ω
E19-28 to E19-2 EGR valve (stepper motor coil 4) 20 – 24 Ω
E19-17 to E19-2 EGR valve (stepper motor coil 3) 20 – 24 Ω
E19-29 to E19-2 EGR valve (stepper motor coil 2) 20 – 24 Ω
E19-18 to E19-2 EGR valve (stepper motor coil 1) 20 – 24 Ω
E19-4 to E19-2 EVAP canister purge valve 30 – 34 Ω
E18-19 to E17-9 (For
TYPE A) (See NOTE)Fuel pump relay 70 – 110 Ω
E18-19 to E18-11 (For
TYPE B) (See NOTE)
E18-1 to Body ground A/C compressor clutch 3 – 4.5 Ω
E18-18 to E19-2 A/C condenser fan control relay 70 – 110 Ω
E18-10 to E18-7 Main relay 70 – 110 Ω
E19-1 to Body ground Ground Continuity
E19-2 to Body ground Ground Continuity
E19-3 to Body ground Ground Continuity
NOTE:
For TYPE A and TYPE B, refer to the NOTE in “ECM Terminal Voltage Values Table” for applicable
model.

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Component Location
NOTE:
The figure shows left-hand steering vehicle.
For right-hand steering vehicle, parts with (*) are installed at the other side.
1. IAT sensor a : Immobilizer indicator lamp (if equipped) A : ECM
2. TP sensor b : A/C condenser fan motor relay (if equipped) B : A/T control module
3. Monitor connector c : Main relay C : EVAP canister
4. CO adjusting resistor (if equipped) d : Fuel pump relay D : DLC
5. CKP sensor e : IAC valve E : ABS control module (if equipped)
6. MAP sensor f : EVAP canister purge valve
7. CMP sensor g : EGR valve (if equipped)
8. Transmission range switch h : Fuel injector
9. VSS i : Ignition coil assemblies
10. HO2S-1 (if equipped) j : MIL
11. HO2S-2 (if equipped)
12. ECT sensor
13. Knock sensor

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Table A-1 Malfunction Indicator Lamp Circuit Check - Lamp Does Not Come
“ON” at Ignition Switch ON (But Engine at Stop)
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, ECM causes the main relay to turn ON (close the contact point). Then,
ECM being supplied with the main power, turns ON the malfunction indicator lamp (MIL). When the engine
starts to run and no malfunction is detected in the system, MIL goes OFF but if a malfunction was or is detected,
MIL remains ON even when the engine is running.
INSPECTION
1. Main fuse 4. Main relay 7.“IG” fuse [A] : Case of TYPE A is shown
(See NOTE)
2. Ignition switch 5. Malfunction indicator lamp in
combination meter8.“IG COIL METER” fuse [B] : Case of TYPE B is shown
(See NOTE)
3. Fuse box 6.“FI” fuse
NOTE:
For TYPE A and TYPE B, refer to the NOTE in “ECM Terminal Voltage Values Table” for applicable
model.
Step Action Yes No
1 MIL Power Supply Check
1) Turn ignition switch ON.
Do other indicator / warning lights in combina-
tion meter comes ON?Go to Step 2.“IG” fuse blown, main fuse
blown, ignition switch mal-
function, “B/W” circuit
between “IG” fuse and
combination meter or
poor coupler connection
at combination meter.

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Table A-2 Malfunction Indicator Lamp Circuit Check - Lamp Remains “ON”
after Engine Starts
WIRING DIAGRAM / CIRCUIT DESCRIPTION
Refer to table A-1.
INSPECTION
2 ECM Power and Ground Circuit Check
Does engine start?Go to Step 3. Go to “Table A-5 ECM
Power and Ground Circuit
Check”.
If engine is not cranked,
go to “Diagnosis” in Sec-
tion 8G.
3 MIL Circuit Check
1) Turn ignition switch OFF and disconnect
connectors from ECM.
2) Check for proper connection to ECM at ter-
minal E18-2 (Case of TYPE A) (See NOTE)
or E17-9 (Case of TYPE B) (See NOTE).
3) If OK, then using service wire, ground termi-
nal E18-2 (Case of TYPE A) (See NOTE) or
E17-9 (Case of TYPE B) (See NOTE) in
connector disconnected.
Does MIL turn on at ignition switch ON?Substitute a known-good
ECM and recheck.Bulb burned out, “V/Y”
wire circuit open or “P”
wire shorted to ground. Step Action Yes No
Step Action Yes No
1 Diagnostic Trouble Code (DTC) check
1) Check DTC referring to DTC CHECK sec-
tion.
Is there any DTC(s)?Go to Step 2 of “Engine
Diag. Flow Table”.Go to Step 2.
2DTC check
1) Start engine and recheck DTC while engine
running.
Is there any DTC(s)?Go to Step 3.
3 MIL Circuit check
1) Turn OFF ignition switch.
2) Disconnect connectors from ECM.
Does MIL turn ON at ignition switch ON?“V/Y” wire circuit shorted
to ground.Substitute a known-good
ECM and recheck.

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Table A-3 Malfunction Indicator Lamp Circuit Check - Mil Flashes at Ignition
Switch ON
WIRING DIAGRAM / CIRCUIT DESCRIPTION
Refer to table A-1.
INSPECTION
Table A-4 Malfunction Indicator Lamp Circuit Check - MIL Does Not Flash, Just
Remains ON or Just Remains OFF Even with Grounding Diagnosis Switch
Terminal
WIRING DIAGRAM / CIRCUIT DESCRIPTION
Refer to table A-1.
INSPECTION
Step Action Yes No
1 MIL flashing pattern check :
1) With the ignition switch ON position, check
MIL flashing pattern.
Does MIL flashing pattern indicate DTC (diag-
nostic trouble code)?Go to Step 2. Go to “Diagnosis” in Sec-
tion 8G.
2 Diagnosis switch terminal check :
1) With the ignition switch ON position, check
voltage between E18-14 terminal of ECM
coupler and ground.
Is voltage 4 – 5 V?Substitute a known-good
ECM and recheck.“W/Bl” wire (diagnosis
switch terminal) shorted
to ground circuit.
If OK, substitute a known-
good ECM and recheck.
Step Action Yes No
1 MIL flashing pattern check :
1) With grounding diagnosis switch terminal
and turn the ignition switch ON position,
check voltage between E18-14 terminal of
ECM connector and ground.
Is voltage 0 – 1 V?Go to Step 2.“W/Bl” wire (diagnosis
switch terminal), “B” wire
of monitor connector
open.
If OK, substitute a known-
good ECM and recheck.
2 Test switch terminal circuit check :
1) With the ignition switch ON position, check
voltage between E18-15 terminal of ECM
connector and ground.
Is voltage 4 – 5 V?Substitute a known-good
ECM and recheck.“P” wire (test switch termi-
nal) shorted to ground cir-
cuit.
If OK, substitute a known-
good ECM and recheck.

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Table A-5 ECM Power and Ground Circuit Check - MIL Doesn’t Light at Ignition
Switch ON and Engine Doesn’t Start Though It Is Cranked Up
CIRCUIT DESCRIPTION
When the ignition switch tuned ON, the main relay turns ON (the contact point closes) and the main power is
supplied to ECM.
INSPECTION
1. Main fuse 4. Main relay 7.“IG” fuse [A] : Case of TYPE A is shown (See
NOTE)
2. Ignition switch 5. Malfunction indicator lamp in
combination meter8.“IG COIL METER” fuse [B] : Case of TYPE B is shown (See
NOTE)
3. Fuse box 6.“FI” fuse
NOTE:
For TYPE A and TYPE B, refer to the NOTE in “ECM Terminal Voltage Values Table” for applicable
model.
Step Action Yes No
1 Main Relay Operating Sound Check
Is operating sound of main relay heard at ignition switch ON?Go to Step 5. Go to Step 2.
2 Main Relay Check
1) Turn OFF ignition switch and remove main relay (1).
2) Check for proper connection to main relay (1) at terminal 3 and 4.
3) Check resistance between each two terminals. See Fig. 1 and 2.
Main relay resistance
Between terminals A and B : Infinity
Between terminals C and D : 70 – 110
Ω
Ω Ω Ω (at 20 °C, 68 °F)
4) Check that there is continuity between terminals 1 and 2 when bat-
tery is connected to terminals 3 and 4. See Fig. 3.
Is main relay in good condition?Go to Step 3. Replace main
relay.

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[A] Fig. 1 for Step 2 and 3 / [B] Fig. 2 for Step 2 / [C] Fig. 3 for Step 23 Fuse Check
Is main “FI” fuse in good condition? See Fig. 1.Go to Step 4. Check for
short in cir-
cuits con-
nected to this
fuse.
4 ECM Power Circuit Check
1) Turn OFF ignition switch, disconnect connectors from ECM and
install main relay.
2) Check for proper connection to ECM at terminals E17-9 (Case of
TYPE A) (See NOTE) or E18-11 (Case of TYPE B) (See NOTE),
E18-10, E18-5 and E18-6.
3) If OK, then measure voltage between terminal E18-10 and ground,
E17-9 (Case of TYPE A) (See NOTE) or E18-11 (Case of TYPE B)
(See NOTE) and ground with ignition switch ON.
Is each voltage 10 – 14 V?Go to Step 5.“B/W”, “Or” or
“Bl/B” circuit
open.
5 ECM Power Circuit Check
1) Using service wire, ground terminal E18-10 and measure voltage
between terminal E18-5 and ground at ignition switch ON.
Is it 10 – 14 V?Check
ground cir-
cuits “B” and
“B/R” for
open.
If OK, then
substitute a
known-good
ECM and
recheck.Go to Step 6.
6 Is operating sound of main relay heard in Step 1? Go to Step 7.“Bl/B” or “B/
R” wire open.
7 Main Relay Check
1) Check main relay according to procedure in Step 2.
Is main relay in good condition?“Or” or “Bl/B”
wire open.Replace main
relay. Step Action Yes No
2.“F1” fuse