ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-147
3 Circuit Check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from ECM and
TCM.
3) Check for proper connection to “E21-7” ter-
minal of ECM connector and “E13-7” termi-
nal of TCM connector.
4) If OK, measure resistance between “E21-7”
terminal of ECM connector and “E13-7” ter-
minal of TCM connector.
Is resistance 1
Ω
or less?
Go to Step 4. “WHT” wire circuit open or
high resistance.
4
Circuit Check
1) Turn ignition switch to ON position.
1) Measure voltage between “E21-7” terminal of
ECM connector and vehicle body ground.
Is voltage 0 – 1 V ?
Go to Step 4. “WHT” wire in shorted to
power circuit.
5 Circuit Check
1) Turn ignition switch to OFF position.
2) Measure resistance between “E21-7” termi-
nal of ECM connector and vehicle body
ground.
Is it infinite?
Go to Step 6. “WHT” wire in shorted to
ground circuit.
6 Circuit Check
1) Check for proper connection to “E21-8” ter-
minal of ECM connector and “E13-17” ter-
minal of TCM connector.
2) If OK, measure resistance between “E21-8”
terminal of ECM connector and “E13-17”
terminal of TCM connector.
Is resistance 1
Ω
or less?
Go to Step 7. “RED” wire circuit open or
high resistance.
7 Circuit Check
1) Turn ignition switch to ON position.
2) Measure voltage between “E21-8” terminal
of ECM connector and vehicle body ground.
Is voltage 0 – 1 V?
Go to Step 8. “RED” wire in shorted to
power circuit.
8 Circuit Check
1) Turn ignition switch to OFF position.
2) Measure resistance between “E21-8” termi-
nal of ECM connector and vehicle body
ground.
Is it infinite?
Go to Step 9. “RED” wire in shorted to
ground circuit.
9DTC Check
1) Connect connectors to ECM and TCM.
2) Connect scan tool to DLC.
3) Check DTC of TCM.
Is DTC P1701 indicated?
Substitute a known-good
TCM and recheck.
If OK, substitute a known-
good ECM and recheck.
Substitute a known-good
ECM and recheck.
Step Action Yes No
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