Note:
 The following section applies to Hermann engine analyzers, tests and connections for Bear DACE engine analyzers are similar, please refer to instruction manual supplied with the EI (distributor-less) test adapters.
When diagnosing starting or warm up complaints, do not check engine at operating temperature, instead proceed according to specific complaint.
Air intake hose at intake air temperature sensor (IAT)
Spark plug covering (on top of valve cover)
Primary ignition side connections:
Unplug connector X26/24 from engine harness and install 2 - pole"piggyback"
connector from primary adapter cable (055/2) in between connector X26/24
and engine harness
Primary adapter cable (055/2) to EI adapter (055) connector T1X
Impulse counter scan tool adapter (075) to data link connector (X11/4)
Cable from TN connector on EI adapter (055) to X11/4 socket 17
Secondary ignition side connections: (HFM)
Trigger clamp (061/1) from engine analyzer to metal handle on EI (distributor-less)
adapter (055)
Kilovolt clamp connector (061/2) from engine analyzer to EI adapter (055) for
kV recognition ( Note: kV clamp must first be removed from connector 061/2)
Trigger clamp (061) from EI adapter (055) to no. 1 ignition wire
Harness connector from kV clamps (no. 1 and 2) to EI adapter (055)
connector (KV 1/2)
KV clamps (063/1, 063/2) to secondary ignition wires for cylinders 1, 2
Harness connector from kV clamps (no. 3 and 4) to EI adapter (055)
connector (KV 3/4)
KV clamps (063/3, 063/4) to secondary ignition wires for cylinders 3, 4
Power supply for distributorless ignition adapter (055)
Black lead to vehicle ground, red lead to terminal 30 at connector X12/3, yellow
lead to terminal 15 at connector X12/3
Remove, reinstall
Remove, reinstall
Connect, disconnect
Connect, disconnect
Connect, disconnect
Connect, disconnect (for TN signal)
Connect, disconnect
Connect, disconnect
Connect, disconnect
Connect, disconnect
Connect, disconnect
Connect, disconnect
Connect, disconnect
Connect, disconnect |
Diagnostic connector (060) from engine analyzer (030) to 9 pin
diagnostic socket on EI (distributor-less) adapter (055)
Vehicle information
Engine analyzer (030)
EI (distributor-less) adapter (055)
Connect, disconnect
Input
Set to 4 cyl. (refer to following pages)
Set according to table (refer to following pages) |
Note:
If the the oscilloscope pattern is upside-down (displays 2 ignition voltage lines at the bottom of the screen) or shows no pattern (with engine running), select a different firing order selection at switch D on the EI (distributor-less) adapter 055 (the base setting is 11; select 12, 13, etc. until correct pattern is displayed)
Connect D.C. inductive (pickup) clamp (065) to battery ground cable (model 170) or to ground strap between the transmission and chassis on left side of vehicle (models 202/210)
Exhaust vent hose (014)
Engine coolant temperature approx. (80 °C)
Connect, disconnect
Insert, remove
Engine at operating temperature
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| Switch A |
Engine Analyzer Input Information |
Test |
T1/1&T1/2&
T1/3&T1/4 |
4 Cyl |
Superimposed display
Cyl. 1-3-4-2-:
Primary/seconary oscilloscope patterns
Idle quality
Dymanic compression |
| T1/1 |
2 Cyl primary |
Single circuit display T1/1
Cyl. 1+4
Primary oscilloscope pattern only
Transistor on (dwell)
Transistor off (circuit off)
Voltage drop at coil terminal 1 1) |
| T1/2 |
2 Cyl primary |
Single circuit display T1/2
Cyl. 2+3
Primary oscilloscope pattern only
Transistor on (dwell)
Transistor off (circuit off)
Voltage drop at coil terminal 1 1) |
| T1/3 |
- |
-
|
| T1/4 |
- |
Not used at this time |
| 1) Primary ignition switching circuit |
| Switch B |
Engine Analyzer Input Information |
Test |
| S - Scope pattern |
4 Cyl
|
Oscilloscope Display - Ignition
Switch "A" select:
T1/1&T1/2&T1/3&T1/4 |
| 2 Cyl primary |
Oscilloscope Display - Ignition
Switch "A" select:
T1/1
T1/2 |
| R - Idle quality |
4 Cyl |
Idle Quality
Switch "A" select:
T1/1&T1/2&T1/3&T1/4
|
K - Compression
|
4 Cyl |
Dynamic Compression Test
Switch "A" select:
T1/1&T1/2&T1/3&T1/4
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Equipment
| Hermann Electronics 1) |
Datascope D950 or D960 S |
| Automotive Diagnostic 1) |
Bear DACE 40-960A |
Electronic ignition (EI) System (distributor-less) adapter 1)
Includes: Kilovolt clamp and kilovolt pickup harness with trigger
clamp for no. 1 cylinder, TN-adapter harness, primary ignition adapter harness
and operating instructions. |
Hermann CD 1222 2)
Bear 43-320 (ref: DACE CD 1222 BA) 2)
|
Adatper set ME-SFI 1.0
Includes: Primary adapter cable for one cylinder, primary adapter cable (for DACE)
secondary adapter cable, kilovolt (coil) pickup. |
Hermann CD 1230 2)
Bear 43-324 2) |
1) Refer to the MBUSA Standard Equipment Program.
2) Equipment supplied with EI (distributor-less) adapter may vary from equipment listed above, refer to MBUSA Standard Equipment Catalog for complete listing. |
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