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Diagnostic Manual, Engines, Volume 1

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LOCATION:    C Diagnostic Equipment    >   42 Diagnosis - Starting Test


Diagnosis - Starting Test

Ignition: ON

Starting test should only be performed if engine does not run.
Test and adjustment data section A.

a) Engine 102, 103, 116, 117 CFI, 104 CFI/LH-SFI

Test sequence:
Connect engine analyzer.
Ignition: ON .
Observe measured values and store or print out.
Specifications appearing on the following page must appear on the engine analyzer screen.

Note:
The starting test on engines 104, 111 HFM-SFI is only possible with the oscilloscope.

b) Engine 119, 120 CFI/LH-SFI
Set engine analyzer to:
4 cylinder position for engine 119;
6 cylinder position for engine 120.
Set dual ignition adaptor to T1/1 1) .
Ignition: ON .
Observe and store measured values.
Set dual ignition adaptor to T1/2 1) .
Observe and store measured values, then
Print out measured values and compared with specifications.
Specifications appearing on the following pages must appear on the engine analyzer screen.


On engine 120, the diagnostic socket adapter must in addition be set for the appropriate ignition circuit.
Example: Dual ignition adaptor T1/1
When checking ignition timing on circuit T1/2 the trigger clamp must be attached to the ignition cable for the no. 12 cylinder.
1) The measurements between T1/1 and T1/2 must be carried out separately.

At Cranking RPM

Starting test - Ignition: ON .
Starting test should only be performed if engine does not run.
Test and adjustment data section A.

a) Engine 102, 103, 116, 117 CFI, 104 CFI/LH-SFI

Test sequence:
Connect engine analyzer.
Actuate starter.
Observe measured values and store or print out during the starting process.
Specifications appearing on the following page must appear on the engine analyzer screen.

Note:
The starting test on engines 104, 111 HFM-SFI is only possible with the oscilloscope.

b) Engine 119, 120 CFI/LH-SFI
Set Engine analyzer to:
4 cylinder position for engine 119;
6 cylinder position for engine 120.
Set dual ignition adaptor to T1/1 1) .
Actuate starter.
Observe and store measured values .
Set dual ignition adaptor to T1/2 1) .
Actuate starter.
Observe and store measured values, then
Print out measured values and compare with specifications.
Specifications appearing on the following page must appear on the engine analyzer screen.


On engine 120, the diagnostic socket adapter must in addition be set for the appropriate ignition circuit.
Example: Dual ignition adaptor T1/1
When checking ignition timing on circuit T1/2 the trigger clamp must be attached to the ignition cable for the no. 12 cylinder.
1) The measurements between T1/1 and T1/2 must be carried out separately.

At Idle Rpm

a) Engine 102, 103, 104, 116, 117 CFI/LH-SFI

Test sequence:
Connect engine analyzer.
Start engine.
Observe measured values and store or print out.
Specifications appearing on the following pages must appear on the engine analyzer screen.

Note:
The starting test on engines 104, 111 HFM-SFI is only possible with the oscilloscope.
  b) Engine 119, 120
Set engine analyzer to:
4 cylinder position for engine 119;
6 cylinder position for engine 120.
Set dual ignition adaptor to T1/1 1).
Start engine.
Observe and store measured values.
Set dual ignition adaptor to T1/2 1) .
Observe and store measured values, then print out measured values and compare with specifications.
Specifications appearing on the following pages must appear on the engine analyzer screen.
Test and adjustment data section A.


On engine 120, the diagnostic socket adapter must in addition be set for the appropriate ignition circuit.
Examples: Dual ignition adaptor T1/1
When checking ignition timing on circuit T1/2 the trigger clamp must be attached to the ignition cable for the no. 12 cylinder.
1) The measurements between T1/1 and T1/2 must be carried out separately.