Suzuki Wagon R Manual page 3718

Test
T01 Symptoms/Customer Complaints
• Check if one of the symptoms in the following table match the pre-
viously recorded customer complaint and perform the following
additional test steps, while performing the troubleshooting in the C-
x tables.
Refer to Table B-04 Symptom Chart/Customer Complaints
Move the related connectors, wiring harness and components in
order to find the failure. Switch on all electric consumers by turns,
because this can cause an electromagnetic interference in a circuit.
Use the oscilloscope to observe the wiring harness for disturbances.
Operate the system under different conditions over a considerable
time.
After successful test/fault repair proceed to the next test step.
Yes: –
C-01: No Communication between Scan tool and Control Module
Test Table
Test
T01 Check: Interruption of Voltage Supply Circuit
• Ignition OFF
• All consumers turned off
• Measure voltage between the following terminals:
Data Link Connector - Wiring harness connector (wiring harness
side) terminal G09-16
&
Ground
Yes: T02
T02 Check: Short to Ground/Interruption of Voltage Supply Circuit
• Disconnect wiring harness connector from:
ECM (Wiring Harness Connector G21)
• Measure voltage between the following terminals:
ECM - Wiring harness connector (wiring harness side) terminal
G21-18
&
Ground
Yes: T03
T03 Check: Short to Ground/Interruption of Voltage Supply Circuit
• Ignition ON
• Measure voltage between the following terminals:
ECM - Wiring harness connector (wiring harness side) terminal
G21-51
&
Ground
Yes: T04
ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z10XEP AND Z12XEP ENGINES) 6-4-37
Work Order Description
Work Order Description
Nominal Value
No: –
Nominal Value
greater than 11 V
No: T18
greater than 11 V
No: E15
greater than 11 V
No: T06