Table 2-1. Troubleshooting - Continued
TEST OR INSPECTION
To avoid damaging the electrical connectors, alternate tightening each of the two screws during reassembly.
(8). Install printed circuit board but do not tighten mounting screws. Connect the two electrical
connectors and secure by tightening two screws. Fasten ten screws that secure printed circuit
board to mounting brackets.
(9). Install electronic control panel assembly in case and secure with light captive screws.
6. HAND LAMP CIRCUIT INOPERATIVE
Step 1. Check for defective hand lamp.
a. Unscrew the lamp shield and remove the lamp.
b. Visually inspect the lamp for a burned filament.
Replace a bad lamp. Install a new lamp in hand lamp and install shield.
Step 2. Check for defective HAND LAMP switch (2A2S6).
a. Loosen the eight captive screws and lift the electronic control panel assembly from the case (fig. 2-41).
Figure 2-41. Removal of ECU panel assembly
b. Unfasten ten screws securing the printed circuit board to mounting brackets and loosen the board
to obtain access to electrical connectors.
To avoid damage to the electrical connectors, alternately back-off each of the two attaching screws when removing the
c. Disconnect two electrical connectors (2A2J5 and 2A2J6) by unfastening two screws at each connector.
If continuity is not present, replace a bad switch.
(1). Place Mode Select switch to GC position (fig. 2-42).
(2). place TEST SELECT switch to SOURCE VOLTAGE position.