Mazda 6 Owners Manual: Wrench Indicator Light (Some models)
When the ignition is switched ON, the wrench indicator light turns on and then turns off after a few seconds.
The wrench indicator light turns on under the following conditions:
- When the preset maintenance period has arrived.
- When its time to replace the engine oil.
Refer to Maintenance Monitor.
Indication/Indicator Lights
These lights turn on or flash to notify the user of the system operation status
or a system malfunction.
*Some models.
*1 The light turns on when the ignition is switched on for an operation ...
Low Engine Coolant Temperature Indicator Light (Blue) (Some models)
The light illuminates continuously when the engine coolant temperature is low
and turns off after the engine is warm.
...
Other materials:
Mazda 6 Owners Manual: Dtc b1318
Caution
When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness
connector, the SST (49 G066 001) must be used. (See ABS (ABS/TCS) HU/CM
INSPECTION.)
Diagnostic procedure
...
Mazda 6 Owners Manual: Procedures for determining the location of a malfunction
System Wiring Diadram
PCM
1. Check the display of DTC U0121 and/or U0155, using the SST (WDS or
equivalent). (See DTC TABLE.)
2. Referring to the following table, determine the malfunctioning part of the
CAN system.
ABS/TCS HU/CM or DSC HU/CM
1. Accec and monitor the PCM MSG and IC MSGo ...