Precaution In Diagnosing Trouble - Suzuki Grand Vitara XL-7 Service Manual

7B1-12 AUTOMATIC TRANSMISSION (4 A / T)

PRECAUTION IN DIAGNOSING TROUBLE

D Don't disconnect couplers from TCM, battery cable from battery,
TCM ground wire harness from engine or main fuse before check-
ing DTC stored in TCM memory. Such disconnection will clear
memorized information in TCM memory.
D Using SUZUKI scan tool, the diagnostic information stored in
TCM memory can be checked and cleared as well. Before its use,
be sure to read Operator's (Instruction) Manual supplied with it
carefully to have good understanding of its functions and usage.
D Be sure to read "PRECAUTIONS FOR ELECTRICAL CIRCUIT
SERVICE" in Section 0A before inspection and observe what is
written there.
D TCM replacement
When substituting a known-good TCM, check for following condi-
tions.
Neglecting this check may result in damage to a good TCM.
– All relays and actuators have resistance of specified value.