Zenith Z5 - OBD-II Test Mode (Diagnostic Service); Test Modes Supported by Z5

User Manual ver.1.03
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OBD-II Test Mode (Diagnostic Service)
There are 9 diagnostic services described in the latest OBD-II standard SAE J1979.
Before 2002, J1979 referred to these services as "modes" and they are as follows:
Service
Description
01
Show current data
02
Show freeze frame data
03
Show stored Diagnostic Trouble Codes
04
Clear Diagnostic Trouble Codes and stored values
05
Test results, oxygen sensor monitoring (non CAN only)
06
Test results, other component/system monitoring (Test results, oxygen sensor
monitoring for CAN only)
07
Show pending Diagnostic Trouble Codes (detected during current or last driving
cycle)
08
Control operation of on-board component/system
09
Request vehicle information
Test Modes supported by Z5
Vehicle manufacturers are not required to support all services, and Z5 does not support
all these generic test modes (diagnostic services) under the standard service names
because the product is built to conduct manufacturer specific diagnostic functions.
- Service 01 is supported by Z5 in 2 functions, 01. Readiness Test and 02. Current
Data. You can check the readiness of on-board diagnostic system by selecting [01.
Readiness test] and monitor the data readings of powertrain control system
parameters by selecting [02. Current Data].
- Service 02, 03, 04 and 07 are supported by Z5 when selecting [03. Diagnostic
Trouble Code] from the menu.
- Service 05 is supported just for non-CAN vehicles, and Z5 shows [04. O2 Test
Results] in the menu for this service in case the vehicle is a non-CAN type that
supports the function.
- Service 06 is supported just for CAN vehicles, and Z5 shows [04. Monitoring Test
Result] instead of [04. O2 Test Results] automatically if the vehicle communicates in
CAN-Bus protocols.