2005 SUZUKI JIMNY Signal

Downloaded from www.Manualslib.com manuals search engine 6-106 ENGINE GENERAL INFORMATION AND DIAGNOSIS
[A] Fig. 1 for Step 2 / [B] Fig. 2 for Step 43 Is it about 12 V at Step 2?“B/R” wire open, poor
E21-11 connection or
TCM power or ground cir-
cuit open.
If wires and connections
are OK, substitute a
known-good TCM and
recheck.Go to Step 4.
4 Check signal circuit.
1) Disconnect TCM coupler with ignition switch
OFF.
2) Check voltage between E21-20 terminal
and body ground with ignition switch ON.
See Fig. 2.
Is it about 12 V?Check TCM power and
ground circuit for open.
If OK, substitute a known-
good TCM and recheck.“B/R” wire shorted to
ground or poor E17-17
terminal connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck. Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-107
DTC P1717 A/T Drive Range (Park / Neutral Position) Signal Circuit Malfunc-
tion
CIRCUIT DESCRIPTION
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Start engine and shift selector lever to “D” range.
4) Increase vehicle speed to higher than 20 mph, 32 km/h and then stop vehicle.
5) Repeat above step 4) 9 times.
6) Shift selector lever to “2” range and repeat above step 4) and 5).
7) Shift selector lever to “L” range and repeat above step 4) and 5).
8) Check DTC in “DTC” mode and pending DTC in “ON BOARD TEST” or “PENDING DTC” mode.
1. Transmission range switch 2. From ignition switch 3. TCM
DTC DETECTING CONDITION POSSIBLE CAUSE
“D” range signal not inputted (Park / Neutral position
signal inputted) to ECM while vehicle running
✱
✱✱ ✱2 driving cycle detection logic, Continuous monitoring.“G/Y” circuit open
Transmission range switch malfunction
“R”, “D”, “2” or “L” range signal circuit open
TCM power or ground circuit open
TCM malfunction
ECM malfunction
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester.

Downloaded from www.Manualslib.com manuals search engine 6-108 ENGINE GENERAL INFORMATION AND DIAGNOSIS
INSPECTION
[A] Fig. 1 for Step 3 / [B] Fig. 2 for Step 4 / [C] Fig. 3 for Step 6Step Action Yes No
1Was “Engine Diag. Flow Table” performed? Go to Step 2. Go to “Engine Diag. Flow
Table”.
2 Is SUZUKI scan tool available? Go to Step 3. Go to Step 4.
3 Check PNP signal (“D” range signal).
1) Connect SUZUKI scan tool to DLC with igni-
tion switch OFF. See Fig. 1.
2) Turn ignition switch ON and check PNP sig-
nal (“P/N” or “D” range) on display when
shifting selector lever to each range.
Is “D” range on display (Is 0 – 1 V indicated) no
matter which of “R”, “D”, “2” and “L” range posi-
tions selector lever may be at? See Table 1.Intermittent trouble or
faulty ECM. Check for
intermittent referring to
“Intermittent and Poor
Connection” in Section
0A.Go to Step 5.
4 Check PNP Signal (“D” range signal).
1) Turn ignition switch ON.
2) Check voltage at terminal E17-6 of ECM
connector connected. See Fig. 2.
Is “D” range on display (Is 0 – 1 V indicated) no
matter which of “R”, “D”, “2” and “L” range posi-
tions selector lever may be at? See Table 1.Intermittent trouble or
faulty ECM. Check for
intermittent referring to
“Intermittent and Poor
Connection” in Section
0A.Go to Step 5.
5Is “P/N” range on display (Is 10 – 14 V indi-
cated) when selector lever is at one of “R”, “D”,
“2” and “L” range positions only?Check transmission range
switch and circuits refer-
ring to Section 7B.Go to Step 6.
6 Check PNP signal circuit.
1) Turn ignition switch OFF.
2) Disconnect TCM connectors.
3) Check for proper connection to TCM at ter-
minal E21-5.
4) If OK, then check voltage at terminal E21-8
in TCM connector disconnected, with igni-
tion switch ON. See Fig. 3
Is it 10 – 14 V?“Y/B” circuit open, poor
transmission range sen-
sor connector connec-
tion, select cable
maladjusted, transmis-
sion range sensor malad-
justed or transmission
range sensor malfunction.
If all above are OK, sub-
stitute a known-good TCM
and recheck.“G/Y” circuit open or poor
E17-6 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-115
3 Is engine idle speed kept specified speed even
with headlight ON?System is in good condi-
tion.Check IAC system for
operation referring to
Step 3 or Step 4 of DTC
P0505 Diag. Flow Table.
4 Was idle speed higher than specification in Step
1?Go to Step 5. Go to Step 8.
5 Check A/C (input) signal circuit referring to Step 1
of Table B-5 A/C Signal Circuit Check, if
equipped. (A/C signal can be also checked by
using SUZUKI scan tool.)
Is it in good condition?Go to Step 6. Repair or replace A/C
signal circuit or A/C sys-
tem.
6 Check IAC system referring to Step 2 to Step 4 of
DTC P0505 Diag. Flow Table.
Is check result satisfactory?Go to Step 7. Go to Step 5 of DTC
P0505 Diag. Flow Table.
7 Was IAC duty less than about 3% (or more than
about 97% for OFF duty meter) in Step 1 of this
table?Check abnormal air
inhaling from air intake
system, PCV valve and
EVAP canister purge
control system.Check TP sensor
(closed throttle position)
and ECT sensor for per-
formance.
If sensors are OK, sub-
stitute a known-good
ECM.
8 Is SUZUKI scan tool available? Go to Step 9. Go to Step 10.
9 Check PNP signal (“D” range signal).
1) Connect SUZUKI scan tool to DLC with igni-
tion switch OFF.
2) Turn ignition switch ON and check PNP signal
(“P/N” and “D” range) on display when shifting
selector lever to each range. See Table 1.
Is check result satisfactory?Go to Step 11. Repair or replace.
10 Check PNP signal (“D” range signal).
1) Turn ignition switch ON.
2) Check voltage at terminal E17-6 of ECM con-
nector connected. See Fig. 1 and Table 1.
Is check result satisfactory?Go to Step 11. Repair or replace.
11 Check IAC system referring to Step 2 to Step 4 of
DTC P0505 Diag. Flow Table.
Is check result satisfactory?Go to Step 12. Go to Step 5 of DTC
P0505 Diag. Flow Table.
12 Was IAC duty more than about 30% or ✱40% (or
less than 70% or ✱60% for OFF duty meter) in
Step 1 of this table? See NOTE.Check parts or system
which can cause engine
low idle.
Accessory engine load
Clog of air passage
Etc.Substitute a known-good
ECM and recheck. Step Action Yes No
NOTE:
Duty value with (
✱
✱✱ ✱) are applicable to vehicle used at high altitude (higher than 2000 m or 6560 ft).

Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-117
Table B-5 A/C Signal Circuits Check (Vehicle with A/C)
1. A/C compressor magnet clutch 4. A/C condenser fan 7. Evaporator temp. sensor
2. A/C switch 5. Refrigerant pressure switch [A] : Case of TYPE A is shown (See NOTE)
3. Blower fan 6. ECT sensor [B] : Case of TYPE B is shown (See NOTE)
NOTE:
For TYPE A and TYPE B, refer to the NOTE in “ECM Terminal Voltage Values Table” for applicable
model.

Downloaded from www.Manualslib.com manuals search engine 6-118 ENGINE GENERAL INFORMATION AND DIAGNOSIS
INSPECTION
Fig. 1 for Step 1Step Action Yes No
1 Check evaporator temp. sensor.
1) Disconnect ECM connectors with ignition
switch at OFF position.
2) Check resistance between E19-14 terminal
and E19-10 terminal.
Reference value
(Refer to characteristic curve below)
ECT sensor resistance
At 0°C 6.3 – 6.9 k
Ω
ΩΩ Ω
At 25°C 1.8 – 2.2 k
Ω
ΩΩ Ω
Is it within specification?Go to Step 2. Faulty A/C evaporator
thermistor or its circuit.
2 Check A/C switch circuit.
1) Check voltage at E18-16 terminal under
each condition given below.
A/C switch signal specification
Ignition switch ON A/C switch OFF
: 10 – 14 V
Ignition switch ON A/C switch ON
: 0 – 1 V
Is check result satisfactory?Go to Step 3.“G/W” wire open or short
Poor E18-16 terminal con-
nection
If wire and connection are
OK, substitute a known-
good ECM and recheck.
Go to Step 3.
3 Check A/C compressor signal.
1) Check voltage at E18-1 terminal under each
condition given below. See NOTE.
A/C compressor signal specification
While engine running, A/C switch OFF
: 0 V
While engine running, A/C switch ON
: 10 – 14 V
Is check result satisfactory?A/C control system cir-
cuits are in good condi-
tion.“P” wire open or short
Poor E18-1 terminal con-
nection
If wire and connection are
OK, substitute a known-
good ECM and recheck.
NOTE:
When A/C evaporator thermistor temp. is below 2.5 °C (36.5 °F), A/C remain OFF (E18-1 terminal volt-
age become 0 – 1 V). This condition is not abnormal.

Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-119
Table B-6 Electric Load Signal Circuit Check
INSPECTION
1. Rear defogger switch 3. Blower fan switch [B] : Case of TYPE B is shown (See NOTE)
2. Light switch [A] : Case of TYPE A is shown (See NOTE)
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 Is SUZUKI scan tool available? Go to Step 2. Go to Step 3.
2 Check Electric Load Signal Circuit.
1) Connect SUZUKI scan tool to DLC with igni-
tion switch OFF. See Fig.1.
2) Start engine and select “DATA LIST” mode
on scan tool.
3) Check electric load signal under following
each condition. See Table 1.
Is check result satisfactory?Electric load signal circuit
is in good condition.“R/W”, “R/Y” and/or “Bl/Y”
circuit open or short, Elec-
tric load diodes malfunc-
tion or Each electric load
circuit malfunction.
3 Check Electric Load Signal Circuit.
1) Turn ignition switch ON.
2) Check voltage at each terminals E17-16,
E18-17 and E18-24 (Case of TYPE A) or
E18-12, E18-17 and E17-13 (Case of TYPE
B) (See NOTE) of ECM connector con-
nected, under above each condition. See
Fig. 2. and Table 1.
Is each voltage as specified?Electric load signal circuit
is in good condition.“R/W”, “R/Y” and/or “Bl/Y”
circuit open or short, Elec-
tric load diodes malfunc-
tion or Each electric load
circuit malfunction.

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-1
6F1
6F2
6G
7C1
7D
7E
7A
7A1
7B1
7C1
7D
7E
7F
8A
8B
8C
8D
6H
6E
10
10A
10B
SECTION 6E
ENGINE AND EMISSION CONTROL SYSTEM
CONTENTS
General Description ....................................... 6E-3
Air Intake System ......................................... 6E-5
Fuel Delivery System ................................... 6E-6
Fuel pump ................................................ 6E-6
Electronic Control System ............................ 6E-7
Engine & emission control input / output
table.......................................................... 6E-8
On-Vehicle Service....................................... 6E-15
Accelerator cable adjustment ................. 6E-15
Idle speed / idle air control (IAC) duty
inspection ............................................... 6E-15
Idle mixture inspection / adjustment
(vehicle without heated oxygen
sensor) ................................................... 6E-17
Air Intake System ....................................... 6E-18
Throttle body .......................................... 6E-18
Idle air control valve (IAC valve)............. 6E-21
Fuel Delivery System ................................. 6E-22
Fuel pressure inspection ........................ 6E-22
Fuel pump .............................................. 6E-23
Fuel pressure regulator .......................... 6E-24
Fuel injector ............................................ 6E-25
Electronic Control System .......................... 6E-29Engine control module (ECM) ................ 6E-29
Manifold absolute pressure sensor (MAP
sensor) ................................................... 6E-29
Throttle position sensor (TP sensor) ...... 6E-30
Intake air temperature sensor
(IAT sensor) ........................................... 6E-31
Engine coolant temperature sensor
(ECT sensor) .......................................... 6E-32
Heated oxygen sensor
(Sensor-1 and sensor-2) ........................ 6E-33
Camshaft position sensor....................... 6E-34
Crankshaft position sensor..................... 6E-35
Vehicle speed sensor (VSS) .................. 6E-36
Fuel level sensor (GAUGE).................... 6E-36
Knock sensor ......................................... 6E-36
Main relay, fuel pump relay and A/C
condenser fan control relay .................... 6E-36
Fuel cut operation .................................. 6E-37
A/C condenser fan control system ......... 6E-37
A/C condenser fan ................................. 6E-37
Output signals of throttle valve opening
and engine coolant temp.
(Vehicle with A/T only) ........................... 6E-38
Emission Control System ........................... 6E-38 WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
Whether following systems (parts) are used in the particular vehicle or not depends on specifications.
Be sure to bear this in mind when performing service work.
EGR valve
Heated oxygen sensor (s) or CO adjusting resistor
Three way catalytic converter (TWC) and warm up three-way catalytic converter (WU-TWC)