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DTC B1870: TSP Manager Error
 
 
caution
  • Park the vehicle in an open area where radio wave is not shielded.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
TROUBLE JUDGMENT
Check Conditions
  • The TCU is being activated.
Judgment Criterion
  • If TSP manager error (communication error between the controlled microcomputer and communication dedicated microcomputer in the TCU) is detected.
 
 
TROUBLESHOOTING HINTS
  • The TCU may be defective
 
 
DIAGNOSIS
Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
(1) Move the vehicle outside because the scan tool communication becomes poor inside.
(2)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(3) Erase the DTC.
(4) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(5) Check the DTC.
Is the DTC set?
Replace the TCU (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).