1316
Pinpoint Tests - Keyless ECM
Power Supply Rail Overvoltage/Undervoltage
Main power supply over Voltage
Main power supply under Voltage
Blown fuse
Short circuit to ground or open circuit
Charging system fault
Disconnect Keyless ECM
connectors and proceed to
pinpoint test 1:
Check cable and terminal integrity:
- Keyless ECM pin 12
- Keyless ECM pin 4
- Ignition relay pin 3
- Battery subharness pin 1
- Battery positive terminal
- Battery negative terminal
Rectify fault, proceed to test 4
Check cable for short circuit:
- Keyless ECM pin 12 to ground
Locate and rectify wiring fault,
proceed to test 4
Check cable continuity:
- Battery positive terminal to
Keyless ECM pin 12
Reconnect harness and
proceed to test 4
Locate and rectify wiring fault,
proceed to test 4
Check fuse integrity:
- Fuse box, fuse 1:
- Main 40 Amp fuse
Replace blown fuse(s),
proceed to test 5
Reconnect harness, clear fault code
and run engine. Measure the
battery voltage while the engine is
running
Greater than
14.6 V or
Less than
13.9 V
Action complete – quit test