P1702

DTC P17O2
AUTOMATIC TRANSMISSION DIAGNOSIS INPUT SIGNAL CIRCUIT MALFUNCTION (ATDIAG)

DTC Detecting Condition
Two consecutive trips with fault.











1. Check Transmission type.
Refer to flow chart.

2. Check harness.





a. Turn ignition switch to "ON".
b. Measure voltage between Engine Control Module (ECM) connector and body.
[CHECK]: Connector & terminal:
(B84) No. 48 - Body/4 Volts or more.
[YES]: Open circuit of harness between ECM connector and Transmission Control Module (TCM) connector.
Poor contact in ECM connector.
Poor contact in TCM connector.
Check the above and repair if necessary.
[NO]: Go to next [CHECK].

[CHECK]: Connector & terminal:
(B84) No. 48 - Body/1 Volt or less.
[YES]: Go to step 3.
[NO]: Although the Malfunction Indicator Lamp (MIL) illuminates circuit is now normal. Check all connectors for possible poor contact between ECM connector and TCM connector.

3. Check harness.





a. Turn ignition switch to "OFF".
b. Disconnect connector from ECM.
c. Measure resistance between ECM harness connector and body.
[CHECK]: Connector & terminal:
(884) No. 48 - Body/10 Ohms or less.
[YES]: Repair short circuit of harness between ECM connector and TCM connector.
[NO]: Repair poor contact in ECM connector.