Idle Test, Adjustment
Listing of Test Steps
1 Test equipment:
Connect/disconnect.
2.0 Throttle control linkage:
Check throttle valve for free movement and condition.
Lubricate bearings, gate levers and ball sockets.
2.1 Idle stop:
Check, adjust.
3 Ignition timing with and without vacuum
Engine: at Idle:
Check Test and Adjustment Data [Specifications]
4 Engine rpm (at idle):
Check
5 On-off ratio control:
Check
6 CTP speed under load:
Check in TR "D" (with service and parking brake applied) and with all consumers turned ON.
Connection Diagram - Test Equipment
Engine 104 LH-SFI
Test Equipment Connection Diagram:
NOTE: Set engine analyzer to 6 cylinder position.
A Throttle linkage
R4 Spark plug (cylinder 1)
S5/3 High-voltage distributor
T1 Ignition coil
X11 Diagnostic socket (9-pole)
X11/4 Data link connector (DTC readout, 38-pole)
012 On-off ratio tester
013 Impulse counter scan tool
014 Exhaust vent hose
018 Oil thermometer
030 Engine analyzer with oscilloscope
042 Pressure gauge
061 Trigger clamp (on cylinder 1)
062 Kilovolt clamp (on ignition coil)
072 Impulse counter scan tool adaptor
Connection Diagram - Test Equipment
Engine 119 LH-SFI with Diagnostic Socket (X11)
Connection Diagram:
NOTES:
- This connection diagram for use with diagnostic socket (X11).
- Set engine analyzer to 4 cylinder position.
- Without the diagnostic adapter tool only one ignition circuit can be checked at a time.
A Throttle linkage
R4 Spark plug (cylinder 1)
S5/5 Left high-voltage distributor
S5/6 Right high-voltage distributor
T1/1 Ignition coil 1 (right cylinder bank)
T1/2 Ignition coil 2 (left cylinder bank)
X11 Diagnostic socket (9-pole)
X11/4 Data link connector (DTC readout)
012 On-off ratio tester
013 Impulse counter scan tool
014 Exhaust vent hose
018 Oil thermometer
030 Engine analyzer with oscilloscope
042 Pressure gauge
061 Trigger clamp (on cylinder 1)
062 Kilovolt clamp (on ignition coil)
072 Impulse counter scan tool adapter
Connection Diagram - Test Equipment
Engine 119 LH-SFI without Diagnostic Socket (X11)
Test Equipment Connection Diagram:
NOTE: Set engine analyzer to 4 cylinder position. Without the diagnostic adaptor tool only one ignition circuit can be checked at a time.
N1/3 DI control module
R4 Spark plug
S5/5 Left high-voltage distributor
S5/6 Right high-voltage distributor
T1/1 Ignition coil 1 (right cylinder bank)
T1/2 Ignition coil 2 (left cylinder bank)
X11/4 Data link connector (DTC readout)
012 On-off ratio tester
013 Impulse counter scan tool
018 Oil thermometer
030 Engine analyzer with oscilloscope
042 Pressure gauge
055/1 On-off ratio signal adaptor (900 589 0115 00)
061 Trigger clamp (on cylinder 1)
062 Kilovolt clamp (on ignition coil)
075 Impulse counter scan tool adaptor
077/1 TN signal, on-off ratio signal connector (see connector A, B in diagram).
Connection Diagram - Test Equipment
Engine 120 LH-SFI with Diagnostic Socket (X11)
Connection Diagram, With Diagnostic Socket:
NOTES:
- This connection diagram for use with diagnostic socket (X11).
- Set engine analyzer to 6 cylinder position.
- Without the diagnostic adapter tool only one ignition circuit can be checked at a time.
A Throttle linkage
R4 Spark plug (cylinder 1)
S5/5 Left high-voltage distributor
S5/6 Right high-voltage distributor
T1/1 Ignition coil 1 (right cylinder bank)
T1/2 Ignition coil 2 (left cylinder bank)
X11 Diagnostic socket (9-pole)
X11/4 Data link connector (DTC readout)
012 On-off ratio tester
013 Impulse counter scan tool
014 Exhaust vent hose
018 Oil thermometer
030 Engine analyzer with oscilloscope
042 Pressure gauge
061 Trigger clamp (on cylinder 1)
062 Kilovolt clamp (on ignition coil)
072 Impulse counter scan tool adapter
Connection Diagram - Test Equipment
Engine 120 LH-SFI without Diagnostic Socket (X11)
NOTE: Set engine analyzer to 6 cylinder position. Without the diagnostic adaptor tool only one ignition circuit can be checked at a time.
N1/3 DI control module
R4 Spark plug
S5/5 Left high-voltage distributor
S5/6 Right high-voltage distributor
T1/1 Ignition coil 1 (right cylinder bank)
T1/2 Ignition coil 2 (left cylinder bank)
X11/4 Data link connector (DTC readout)
012 On-off ratio tester
013 Impulse counter scan tool
018 Oil thermometer
030 Engine analyzer with oscilloscope
042 Pressure gauge
055/1 On-off ratio signal adaptor (900 589 0115 00)
061 Trigger clamp (on cylinder 1)
062 Kilovolt clamp (on ignition coil)
075 Impulse counter scan tool adaptor
077/1 TN signal, on-off ratio signal connector (see connector A, B in diagram).
Connection chart for test equipment without diagnostic adapter for two circuit ignition systems
Connection Diagram:
Testing/Adjustment
NOTE: The on-off ratio control system test should not be performed on a very hot engine. For example, after a fast drive or after an output test on a dynamometer.
